I'm trying to add a new item on an array that displays in a container on HTML. It's supposed to get an image file and an url from input, check the selected option and push each one to its specified array
Here is the relevant html:
<input type="file" name="comic-cover" id="comic-cover" required />
<input type="url" name="comic-url" id="comic-url" placeholder="url" required />
<select name="publisher-list" id="publisher">
<option value="publisher" disabled>Publisher</option>
<option value="dc">DC Comics</option>
<option value="marvel">Marvel</option>
</select>
<button type="submit" class="btn-submit">Add</button>
<h2 class="comic-publisher">DC Comics</h2>
<div class="dc" id="block-dc">
</div>
<h2 class="comic-publisher">Marvel</h2>
<div class="marvel" id="block-marvel">
</div>
and the js:
var comicCovers = ["imgs/Dark Knights of Steel-000.jpg", "imgs/Hawkeye-000.jpg"]
var trailers = ["https://www.youtube.com/watch?v=WspmgrmEgn4", "https://www.youtube.com/watch?v=ssj0P0uY08U"]
var publishers = [0, 1];
var i = 0;
var blockDC = document.querySelector("#block-dc");
var blockMarvel = document.querySelector("#block-marvel");
render()
var publisher = document.querySelector("select").value;
document.querySelector("select") = function renderPublisher() {
publisher = document.querySelector("select").value;
return publisher;
}
// add new comics to the list //
document.querySelector(".btn-submit") = function addOnList() {
var newCover = document.querySelector("#comic-cover");
var newTrailer = document.querySelector("#comic-url");
if (newCover.endsWith(".jpg") & newTrailer.startsWith("https://")) {
if (publisher == "dc") {
publisher.push(0);
} else {
publisher.push(1)
}
comicCovers.push(newCover.value);
trailers.push(newTrailer.value);
newCover.value = "";
newTrailer.value = "";
render()
}
}
function render() {
for (i; i < comicCovers.length; i++) {
// creates the comic covers using js var //
var comicCover = document.createElement("img");
comicCover.setAttribute("src", `${comicCovers[i]}`);
// creates trailer button //
var trailerButton = document.createElement("button");
// //
var container = document.createElement("div");
container.setAttribute("class", "container");
container.appendChild(trailerButton);
container.appendChild(comicCover);
blockDC.appendChild(container);
trailerButton.appendChild(document.createTextNode("Trailer"));
trailerButton.setAttribute("class", "trailer-button");
trailerButton.setAttribute("onclick", `openTrailer("${trailers[i]}")`);
if (publishers[i] == 0) {
blockDC.appendChild(container);
} else {
blockMarvel.appendChild(container);
}
}
}
I tried to use if (newCover != "" & newTrailer != "") and even changed the input type from file to url. What am I doing wrong?
You're tring to push values inside the variable called publisher which is just a string and not an array.
var publisher = document.querySelector("select").value;
publisher.push(0);
You're assigning a function to an html element by writing:
document.querySelector("select") = function renderPublisher() {
publisher = document.querySelector("select").value;
return publisher;
}
which is not correct.
Also The variables newCover and newTrailer are not strings.
var newCover = document.querySelector("#comic-cover");
var newTrailer = document.querySelector("#comic-url");
so you can't use the methods startsWith and endsWith for them, you have to access the elements' value instead. In order to get the name of the selected file you need to use the input tag's files attribute which returns an array of the selected files, we want the first file so we'll get the first item's name attribute.
var newCover = document.querySelector("#comic-cover").value;
var newTrailer = document.querySelector("#comic-url")?.files[0]?.name;
Overall first you need to grab the values provided inside the inputs, then push them inside the array related to the selected block(Marvel or DC), then you simply need to create the img, video and button tags and append them as a child to the selected block.
Url and file type validation should be handled also on both server and client side and it's gotta be much more than just checking if the fileName ends with ".jpg" or the url starts with "https://".
You need to store the uploaded image and video somewhere on the server. In order to do so, you'll have to attach an eventListener to the input tags so that whenever a file is selected, you'll send an upload request to the server, there you'll check if the file is valid and if so, you'll store the file somewhere on the server, then you'll pass the url of the uploaded photo/video as src to the img/video tags.
const publishers = {
dc: {
comicCovers: [],
trailers: []
},
marvel: {
comicCovers: [],
trailers: []
}
}
const blockDC = document.querySelector("#block-dc");
const blockMarvel = document.querySelector("#block-marvel");
const blocksDivs = {
dc: blockDC,
marvel: blockMarvel
};
const addButton = document.querySelector(".btn-submit");
// add new comics to the list //
addButton.addEventListener("click", () => {
const publisher = document.querySelector("#publisher").value;
const newCoverFileName = document.querySelector("#comic-cover")?.files[0]?.name;
const newTrailerUrl = document.querySelector("#comic-url").value;
if (newCoverFileName?.endsWith(".jpg") && newTrailerUrl?.startsWith("https://")) {
publishers[publisher].comicCovers.push(newCoverFileName);
publishers[publisher].trailers.push(newTrailerUrl);
var container = document.createElement("div");
var coverImg = document.createElement("img");
var playTrailerButton = document.createElement("button");
playTrailerButton.innerHTML = "play trailer"
coverImg.src = "http://yourserveraddress/imgs/" + newCoverFileName;
//test photo
coverImg.src = "https://picsum.photos/200/300"
container.appendChild(coverImg);
container.appendChild(playTrailerButton);
blocksDivs[publisher].appendChild(container);
playTrailerButton.setAttribute("class", "trailer-button");
playTrailerButton.addEventListener("click", () => {
var videoExists = document.getElementById(publishers[publisher].trailers.length)
if (!videoExists) {
var video = document.createElement('video');
video.setAttribute("id", publishers[publisher].trailers.length)
video.style.backgroundColor = "aliceblue"
video.setAttribute("src", newTrailerUrl);
video.setAttribute("width", "200")
video.setAttribute("height", "200")
container.appendChild(video);
playTrailerButton.innerHTML = "close Trailer"
} else {
container.removeChild(videoExists)
playTrailerButton.innerHTML = "play Trailer"
}
})
}
})
<input type="file" name="comic-cover" id="comic-cover" required />
<input type="url" name="comic-url" id="comic-url" placeholder="url" required />
<select name="publisher-list" id="publisher">
<option value="publisher" disabled>Publisher</option>
<option value="dc">DC Comics</option>
<option value="marvel">Marvel</option>
</select>
<button type="submit" class="btn-submit">Add</button>
<h2 class="comic-publisher">DC Comics</h2>
<div class="dc" id="block-dc">
</div>
<h2 class="comic-publisher">Marvel</h2>
<div class="marvel" id="block-marvel">
</div>
Related
So I'm working on a section of my Website which has a TODO List built in not I want the data to load just like other data that are loading alongside the page. I tried having onload in Body Tag in my HTML and I had also tried to $(document).ready(function(){}) as well however neither of them seemed to work nor was I getting any errors in my console. But the function is working as it is also link to another function which runs on click of a button which I don't want to keep happening. I want it to be seamless. Is there any reason why this might not be working.
Thanks for any help in advance.
My HTML and Javascript Code:
function create() {
unfinished_task_container = document.getElementById("main_container");
unfinished_task_container.innerHTML = "";
var user = firebase.auth().currentUser;
var uid;
if (user != null) {
uid = user.uid;
}
task_array = [];
firebase
.database()
.ref("/Users/" + uid + "/todo/")
.once("value", (snapshot) => {
snapshot.forEach((childSnapshot) => {
var childKey = childSnapshot.key;
var childData = childSnapshot.val();
task_array.push(Object.values(childData));
});
for (var i = 0; i < task_array.length; i++) {
task_key = task_array[i][0];
task_title = task_array[i][1];
//Data
task_container = document.createElement("div");
task_container.setAttribute("class", "task_container");
task_container.setAttribute("data-key", task_key);
task_data = document.createElement("div");
task_data.setAttribute("id", "task_data");
title = document.createElement("p");
title.setAttribute("id", "task_title");
title.setAttribute("contenteditable", false);
title.innerHTML = task_title;
//Tools
task_tool = document.createElement("div");
task_tool.setAttribute("id", "task_tool");
task_done_button = document.createElement("button");
task_done_button.setAttribute("id", "task_done_button");
task_done_button.setAttribute(
"onclick",
"task_done(this.parentElement.parentElement, this.parentElement)"
);
task_done_button.setAttribute("onclick", "task_done()");
fa_done = document.createElement("i");
fa_done.setAttribute("class", "fa fa-check");
unfinished_task_container.append(task_container);
task_container.append(task_data);
task_data.append(title);
task_container.append(task_tool);
task_tool.append(task_done_button);
task_done_button.append(fa_done);
}
});
}
<body onload="create();">
<div class="dentistToDo">
<p class="divlable">Your Personal To Do List</p>
<input id="input_box" placeholder="What needs to be done?" />
<button id="input_button" onclick="add_task()">Add Task</button>
<div class="container" id="main_container">
<!-- DIV for TODO List -->
</div>
</div>
WARNING: I'm not a programmer by trade.
Ok. Got the disclaimer out of the way. So this might not be the best way to do this but here is the scenario. I have a dropdown that gets populated via a Google Sheet. The user chooses a selection from the list but this dropdown does not have all of the possible values it could have. There will likely be a time when the user needs a new value added. While I could manually update the spreadsheet as new values are requested that introduces an element of human availability to get this done and I'm not always available.
What I would prefer is a self-serve model. I want to supply the user with a text field where they can enter the new value and submit it to the Google Sheet. Then I would like the dropdown to be updated with the new value for the user to choose.
Now, I realize that I could just submit the value in the new field to the Google Sheet but that will require building a condition to see whether it is the dropdown or text field that has a value in it. I'd also need some type of error handling in case both the dropdown and text field have values. That seems like a bigger headache to program then my ask.
I'm not sure what code you would need to see to help make this work but here is what I think might help.
doGet function
function doGet(e){
var ss = SpreadsheetApp.openById(ssId)
var ws = ss.getSheetByName("External");
var range = ws.getRange("A2:D2");
var valuesArray = [];
for (var i = 1; i <= range.getLastColumn(); i++){
var lastRowInColumn = range.getCell(1, i).getNextDataCell(SpreadsheetApp.Direction.DOWN).getRow();
var list = ws.getRange(2,i,lastRowInColumn-1,1).getValues();
valuesArray.push(list);
}
var userEmail = Session.getActiveUser().getEmail();
var sourceListArray = valuesArray[2].map(function(r){ return '<option>' + r[0] + '</option>'; }).join('');
var productListArray = valuesArray[3].map(function(r){ return '<option>' + r[0] + '</option>'; }).join('');
var tmp = HtmlService.createTemplateFromFile("config");
tmp.productList = productListArray;
return tmp.evaluate();
}
Add to Google Sheet
function userClicked(tagInfo){
var ss = SpreadsheetApp.openById(ssId)
var ws = ss.getSheetByName("Data");
ws.appendRow([tagInfo.email, tagInfo.source, tagInfo.product, new Date()]);
}
Add record
function addRecord(){
var tagInfo = {};
tagInfo.product = document.getElementById("product").value;
google.script.run.userClicked(tagInfo);
var myApp = document.getElementById("source");
myApp.selectedIndex = 0;
M.FormSelect.init(myApp);
var myApp = document.getElementById("brand");
myApp.selectedIndex = 0;
M.FormSelect.init(myApp);
var myApp = document.getElementById("product");
myApp.selectedIndex = 0;
M.FormSelect.init(myApp);
}
How dropdowns are populated in the HTML.
<div class="input-field col s3">
<select id="product" onchange="buildURL()">
<option disabled selected value="">Choose a product</option>
<?!= productList; ?>
</select>
<label>Product</label>
</div>
Need to see anything else? I think it might be relatively easy to add the new value to the column but the tricky part seems to be the update of only that one dropdown and not the entire app. To me it seems like I want to trigger the doGet() function again but only for that specific dropdown. Thoughts?
UPDATE: current code to add new value to dropdown
function addProduct() {
let newProd = document.getElementById("newProduct").value;
google.script.run.withSuccessHandler(updateProductDropdown).addNewProduct(newProd);
document.getElementById("newProduct").value = "";
}
function updateProductDropdown(newProd){
var newOption = document.createElement('option');
newOption.value = newProd;
newOption.text = newProd;
document.getElementById('product').add(newOption);
}
UPDATE2: App Scripts function to add new value to column in spreadsheet
function addNewProduct(newProd){
var columnLetterToGet, columnNumberToGet, direction, lastRow, lastRowInThisColWithData, rng, rowToSet, startOfSearch, valuesToSet;
var ss = SpreadsheetApp.openById(ssId);
var ws = ss.getSheetByName("List Source - External");
lastRow = ws.getLastRow();
//Logger.log('lastRow: ' + lastRow)
columnNumberToGet = 9;//Edit this and enter the column number
columnLetterToGet = "I";//Edit this and enter the column letter to get
startOfSearch = columnLetterToGet + (lastRow).toString();//Edit and replace with column letter to get
//Logger.log('startOfSearch: ' + startOfSearch)
rng = ws.getRange(startOfSearch);
direction = rng.getNextDataCell(SpreadsheetApp.Direction.UP);//This starts
//the search at the bottom of the sheet and goes up until it finds the
//first cell with a value in it
//Logger.log('Last Cell: ' + direction.getA1Notation())
lastRowInThisColWithData = direction.getRow();
//Logger.log('lastRowInThisColWithData: ' + lastRowInThisColWithData)
rowToSet = lastRowInThisColWithData + 1;
valuesToSet = [newProd];
ws.getRange(rowToSet, 9).setValues([valuesToSet]);
return newProd;
}
SOLUTION to Update Materialize Dropdown
function updateProductDropdown(newProd){
newProdOption = document.getElementById('product');
newProdOption.innerHTML += '<option>' + newProd + '</option>';
var elems = document.querySelectorAll('select');
var instances = M.FormSelect.init(elems);
}
You can specify a client side callback function if you use google.script.run withSuccessHandler(callback) where your callback could update the list only and not the whole site.
Example:
google.script.run.withSuccessHandler(updateDropdownWidget).updateDropdownList(text_from_input)
Where updateDrownList(text_from_input) is a function in your Apps Script that adds text to the sheet using SpreadsheetApp for example, and returns the "text" to the callback function: updateDropdownWidget(text) which adds a new list item to the HTML drop-down list in your front end.
index.html:
<form>
<label for="newOption">New option for the dropdown:</label>
<input type="text" id="nopt" name="newOption">
<input type="button" value="Submit"
onclick="google.script.run.withSuccessHandler(updateDropdownWidget)
.updateDropdownList(document.getElementById('nopt').value)">
</form>
<label for="cars">Choose a car:</label>
<select name="cars" id="cars">
<?!= values; ?>
</select>
<script>
function updateDropdownWidget(text){
var option = document.createElement('option');
option.value = text;
option.text = text;
document.getElementById('cars').add(option);
}
</script>
Code.gs:
function doGet(e){
var ss = SpreadsheetApp.getActiveSheet();
var lastRow = ss.getDataRange().getLastRow();
var values = ss.getRange(1,1,lastRow,1).getValues();
var valuesArray = [];
for (var i = 0; i < values.length; i++){
valuesArray.push('<option value="'+values[i]+'">' +values[i]+ '</option>');
}
var tmp = HtmlService.createTemplateFromFile("index");
tmp.values = valuesArray;
return tmp.evaluate();
}
function updateDropdownList(text_from_input){
// Log the user input to the console
console.log(text_from_input);
// Write it to the sheet below the rest of the options
var sheet = SpreadsheetApp.getActiveSheet();
var lastRow = sheet.getDataRange().getLastRow();
sheet.getRange(lastRow+1,1).setValue(text_from_input);
// Return the value to the callback
return text_from_input;
}
Here's an example:
In my Stack Over Flow spreadsheet I four buttons which can be used to run any function in 3 script files and every time I load the sidebar it reads the functions in those script files and returns them to each of the select boxes next to each button so that I test functions that I write for SO with a single click and I can select any function for any button. Here's the Javascript:
$(function(){//JQuery readystate function
google.script.run
.withSuccessHandler(function(vA){
let idA=["func1","func2","func3","func4"];
idA.forEach(function(id){
updateSelect(vA,id);
});
})
.getProjectFunctionNames();
})
Here is GS:
function getProjectFunctionNames() {
const vfilesA=["ag1","ag2","ag3"];
const scriptId="script id";
const url = "https://script.googleapis.com/v1/projects/" + scriptId + "/content?fields=files(functionSet%2Cname)";
const options = {"method":"get","headers": {"Authorization": "Bearer " + ScriptApp.getOAuthToken()}};
const res = UrlFetchApp.fetch(url, options);
let html=res.getContentText();
//SpreadsheetApp.getUi().showModelessDialog(HtmlService.createHtmlOutput(html), "Project Functions");
let data=JSON.parse(res.getContentText());
let funcList=[];
let files=data.files;
files.forEach(function(Obj){
if(vfilesA.indexOf(Obj.name)!=-1) {
if(Obj.functionSet.values) {
Obj.functionSet.values.forEach(function(fObj){
funcList.push(fObj.name);
});
}
}
});
//SpreadsheetApp.getUi().showModelessDialog(HtmlService.createHtmlOutput(funcList.join(', ')), "Project Functions");
return funcList;//returns to withSuccessHandler
}
Image:
Animation:
Hi all i have code for multiple upload image, but i want only one image per upload. so I create the input file every time I clicked the upload button with the dynamic id. however I have problems checking whether the user chooses the file to upload or press the cancel button. because if the user pressed the cancel button I want to delete the input file I have created. for full sourcenya as below:
$(document).ready(function () {
$("#btnimg").click(function () {
//check input file id number
var counter = $("input[id^='upload']").length;
//add input file every btnimg clicked
var html = "<input type='file' id='upload_" + counter + "' style='display:none;'/>";
$("#result").append(html);
//trigger to dialog open file
var upload = $('#upload_' + counter);
upload.trigger('click');
upload.on('change', function () {
console.log('change fire...');
var inputFiles = this.files;
var inputFile = inputFiles[0];
var reader = new FileReader();
reader.onload = function (evt) {
var imghtml = "<img id='img_upload_" + counter + "' src='" + evt.target.result + "' width='50px;' height='50px;'/>";
$('#previewimage').append(imghtml);
};
reader.onerror = function (event) {
alert("something: " + event.target.error.code);
};
reader.readAsDataURL(inputFile);
});
//if file not selected or user press button cancel on open dialog
//upload.remove();
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<body>
<div id="result"></div>
<button id="btnimg">upload image</button>
<div id="previewimage">
</div>
</body>
thank you in advance,
You can check the .length of <input type="file"> element .files property to determine if a file is selected by user
That all sounds like an xy-problem to me.
I have not (yet) got a response from you about the why you want to do it, so I will base my answer on two probable situations:
If you want to keep track of the selected Files, in order to be able to do anything with them later (e.g send them through AJAX), then use a single <input>.
At every change event, you will store the new File in an Array, from where you will also be able to do something with later on:
(function() {
// this Array will hold our files, should be accessible to the final function 'doSomething'
var savedFiles = [];
var counter = 0;
var upload = $('#upload');
upload.on('change', onuploadchange);
$("#btnimg").click(function routeClick() {
upload.trigger('click');
});
$('#endbtn').click(function doSomething() {
console.log(savedFiles);
});
function onuploadchange() {
var inputFiles = this.files;
var inputFile = inputFiles[0];
if (!inputFile) { return; } // no File ? return
savedFiles.push(inputFile); // save this File
// don't use a FileReader here, useless and counter-productive
var url = URL.createObjectURL(inputFile);
var imghtml = "<img id='img_upload_" + counter + "' src='" + url + "' width='50px;' height='50px;'/>";
$('#previewimage').append(imghtml);
$('#endbtn').removeAttr('disabled');
}
})();
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="result">
<!-- A single input to save them all-->
<input type='file' id='upload' style='display:none;' />
</div>
<button id="btnimg">upload image</button>
<div id="previewimage">
</div>
<button id="endbtn" disabled>do something with saved files</button>
If, for an obscure reason, you absolutely need to keep all the filled <input> elements in your document, then create a new one only if the last one is itself filled.
$(document).ready(function() {
$("#btnimg").click(function() {
// grab previous ones
var inputs = $("input[id^='upload']");
// get the last one we created
var last = inputs.last();
var counter = inputs.length;
console.log(counter);
var upload;
// if there is no input at all, or if the last one is already filled with a File
if (!last.length || last[0].files.length) {
console.log('create new input');
upload = makeNewInput();
} else {
// use the last one
upload = last;
}
//trigger to dialog open file
upload.trigger('click');
function makeNewInput(counter) {
var html = "<input type='file' id='upload_" + counter + "' style='display:none;'/>";
var el = $(html);
el.on('change', onuploadchange);
$('#result').append(el);
return el;
}
function onuploadchange() {
var inputFiles = this.files;
var inputFile = inputFiles[0];
var url = URL.createObjectURL(inputFile);
var imghtml = "<img id='img_upload_" + counter + "' src='" + url + "' width='50px;' height='50px;'/>";
$('#previewimage').append(imghtml);
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="result"></div>
<button id="btnimg">upload image</button>
<div id="previewimage">
</div>
<!DOCTYPE html> <!--Declare the document type and version of HTML-->
<html>
<head><!--Information related to the decument-->
<title>Task List</title>
<link rel="stylesheet" href="mydesign.css">
</head>
<body><!--Information related to display the decument-->
[<img src="cm1XiuT.png" alt="CounterStrike" style="width:100%;height:250pt;">][1]
<input type="text" placeholder="Add Tasks Here..." id="taskValue">
<button id="addBtn" onclick="addTask()">add</button>
<!--horizontal Rule-->
<hr>
<section id="content">
</section>
<script>
/creates an Array variable tasks checks if there are any stored
tasks in the browser Conditional statement - Checks IF there is
data stored then imports the data to the array IF not - exitx the
function with an empty array IF THERE IS - exits the function with
the poplulated array/
this is a code
function creatArray()
{
var taskArray = [];
var tasks = localStorage.getItem("itemList");
if(tasks != null)
{
/*code runs if the condition is met*/
taskArray = JSON.parse(tasks);
}
return taskArray;
}
/*Addsa task to the list Creates an array Creates a variable to
store the information in the input fieldset clears the information
in the input field Pushes the task into our Array Stores the
updated Tasklist in the browser Calls the displayTask Function
*/
function addTask()
{
var taskList = creatArray();
var task = document.getElementById("taskValue").value;
document.getElementById("taskValue").value = "";
taskList.push(task);
localStorage.setItem("itemList",JSON.stringify(taskList));
displayTask();
}
/*Removes a task from the list creats a variable to store the
correct button information. this - as in "this"button that has been
clicked creats an array removes the task from our array and
defines how many items we need to remove calls the displayTask
function */
function removeTask()
{
//remove the tasks from the array
var rID = this.getAttribute("id");
var taskList = createArray();
taskList.splice(rID, 1);
localStorage.setItem("itemList",JSON,stringify(taskList));
displayTask();
}
/*displays Tasks in the list Creates the array of tasks creates
the variable to store the list items LOOP statement - adds HTML to
each list item in the array {repeats until the end of the }
replaces the content in the section tag with id="content"
creates a button array LOOP STATMENT - adds an EvenListenerr to
each button in the List */
function displayTask()
{
var taskList = createArray();
var showTasks = "<ul>";
for(var i=0; i < taskLIst.length; i++)
{
showTasks += "<li>"+taskList[i]="<button class='rmvBtn'id='"+i+"'>remove</button></li>"
}
showTasks += "</ul>";
document.getElementById("content"),innerHTML =showTasks;
var btnArray = document.getElementById("rmvBtn");
for(i =0; i < btnArray.length; 1++)
{
btnArray[i].addEventListener('click',removeTask);
}
}
displayTask()
</script><!--includes an external javascript file-->
</body>
</html>
Look, only javascript and html
HTML
<div id="tasks"></div>
<div>
<input type="text" id="newTaskInput">
<button onclick="add()">Add</button>
</div>
JavaScript
var tasks = []
function init() {
tasks = load()
renderTasks()
}
init()
function renderTasks() {
var container = document.getElementById('tasks')
var frag = document.createDocumentFragment()
tasks.forEach(function(item, i) {
var div = document.createElement('div')
var text = document.createTextNode(item.name)
div.appendChild(text)
var closeBtn = document.createElement('button')
var btnText = document.createTextNode('x')
closeBtn.appendChild(btnText)
closeBtn.onclick = function() {
remove(i)
}
div.appendChild(closeBtn)
frag.appendChild(div)
})
container.innerHTML = ""
container.appendChild(frag)
}
function add() {
var input = document.getElementById('newTaskInput')
tasks.push({ name: input.value })
renderTasks()
save(tasks)
}
function remove(index) {
tasks.splice(index, 1)
renderTasks()
save(tasks)
}
function save(data) {
localStorage.setItem('tasks', JSON.stringify(data))
}
function load() {
var raw = localStorage.getItem('tasks')
if ( raw ) {
return JSON.parse(raw)
}
return []
}
DEMO
How can I modify this script to capture the 'alt' attribute for the images a user selects in a slideshow?
This code displays a series of 20 pairs of images and asks users to select their preferences. Each time the user clicks one of the 'Select' buttons, the 'manipulateDOM()' function advances to the next set of items in the the text and image arrays. However, since it's not set up as a typical form field, I'm having difficulty figuring out how to capture the value of each selection so that it can be submitted to the database with the rest of the form values.
I tried creating a function with the click() method to (at the very least) capture the src value, but I can't get the syntax right so that it can run in conjunction with the 'manipulateDOM()' function. I'd also much rather capture the 'alt' attribute, but I couldn't figure out how to do that.
Function I was experimenting with:
$(document).ready(function () {
$("#buttons").click(function () {
var imgvalue = $("#imgtrendy").attr("src");
$("#picval").text(imgvalue);
document.write(imgvalue + ', ');
});
});
Existing Code:
Javascript - manipulateDOM() and manipulateDOM1() functions
var NumberOfImages = 3 - 1; //-1 because array members starts from 0
var trendy = new Array(NumberOfImages);
trendy[0] = "files/set1/A1.jpg";
trendy[1] = "files/set1/B1.jpg";
trendy[2] = "files/set1/C1.jpg";
var imgNumber = 1; //array key of current image
var NumberOfImages = 3 - 1;
var classic = new Array(NumberOfImages);
classic[0] = "files/set1/A2.png";
classic[1] = "files/set1/B2.jpg";
classic[2] = "files/set1/C2.jpg";
var classicNumber = 1;
var text = 3 - 1;
var text = new Array;
text[0] = "Which would you be more likely to wear?"
text[1] = "Which look is more you?"
text[2] = "Which would you rather wear?"
var textNumber = 1;
function manipulateDOM() {
changeObjects();
NextImage();
}
function changeObjects() {
document.getElementById("question").innerHTML = text[textNumber];
}
function NextImage() {
if (imgNumber < NumberOfImages) //Stop moving forward when we are out of images
{
imgNumber++;
document.images["taste"].src = trendy[imgNumber];
document.images["taste1"].src = classic[imgNumber];
textNumber++;
document.getElementById["question"].innerHTML = text[textNumber];
document.getElementById["selectButton"].innerHTML = text[textNumber];
}
}
function manipulateDOM1() {
changeObjects();
NextImage1();
}
function NextImage1() {
if (imgNumber < NumberOfImages)
{
imgNumber++;
document.images["taste"].src = trendy[imgNumber];
document.images["taste1"].src = classic[imgNumber];
textNumber++;
document.getElementById["question"].innerHTML = text[textNumber];
document.getElementById["selectButton"].innerHTML = text[textNumber];
}
}
HTML
<form id="taste" name="taste" method="post" action="taste-exec.php" >
<h2 id="question"> Which would you be more likely to wear?</h2>
<table><tr>
<td><img id="imgtrendy" src="files/set1/A1.jpg" name="taste" value="trendy[1]" /></td>
<td><img id="imgclassic" src="files/set1/A2.png" name="taste1" value="classic[1]" /></td></tr>
<tr id="buttons">
<td><img id="trendyButton" alt"Select" src="files/Select.jpg" onclick="javascript:manipulateDOM()"></td>
<td ><img id="classicButton" alt"Select" src="files/Select.jpg" onclick="javascript:manipulateDOM1()"></td>
</tr><tr>
<td id="picval"></td>
<td><input name="answer" id="answer" type="text" /></td>
</tr></table>
</form>
You get the alt attribute using also the attr method and alt as parameter, just like you are already doing with src. You could try:
function changeObjects() {
document.getElementById("question").innerHTML = text[textNumber];
var imgvalue = $("#imgtrendy").attr("alt");
$("#picval").text(imgvalue);
}
Edit: Example of keeping data in one single array
//to save it
var alt = $("#imgtrendy").attr("alt");
var fileName= 'someValue';//populate accordingly
var myArray[index] = alt + '|' + fileName;
//to retrieve it
var bothValues = myArray[index].split('|'); //gives you an array
alt = bothValues[0] //contains alt at index 0
fileName = bothValues[1] //contains fileName at index 1