Hello i am working on a project i need to send item in session and add limit only 4 item will be add on session. it's working on one blade but when i move to another blade it will show nothing on the button like how many items in the session and when am trying to add another item it will add.
this is my script
var increment = 0;
$(document).ready(function(){
$(".compare").click(function(){
increment++;
document.getElementById('compare').innerHTML = "";
document.getElementById('compare').innerHTML = "Compare (" +increment+")";
if(increment == 4)
{
var array = document.getElementsByClassName('compare');
for (var i = 0 ; i < array.length ; i++)
{
array[i].setAttribute('disabled','');
}
}
i am wanted to add only 4 items in the session from every where.
please send any solution .
Try this :
var increment = 1;
$(document).ready(function(){
if(localStorage.getItem("compare") > 0){
increment = localStorage.getItem("compare");
document.getElementById('compare').innerHTML = "Compare (" +increment+")";
} else {
document.getElementById('compare').innerHTML = "";
}
$(".compare").click(function(){
if(increment == 4)
{
var array = document.getElementsByClassName('compare');
for (var i = 0 ; i < array.length ; i++)
{
array[i].setAttribute('disabled','');
}
} else {
increment++;
localStorage.setItem("compare", increment);
document.getElementById('compare').innerHTML = "Compare (" +increment+")";
}
}
}
Related
I'm making an audio player, and I have a list of divs acting as my playlist... I'm using JS to make the list, and I'm using this script to search through them:
/*Search Songs*/
function searchSongs(){
let input = _('#songSearch').value.toLowerCase();
let items = _all('.item');
let dividers = _all(".divider");
for (let i = 0; i < items.length; i++) {
if (!items[i].innerHTML.toLowerCase().includes(input)) {
items[i].style.display = "none";
}
else {
items[i].style.display = "";
}
}
// add noresults message at end if all list divs are hidden
if (!items.innerHTML.toLowerCase().includes(input)) {
_('.noResults').innerHTML = `<p>No results found for "${input}"`
}
}
I have a paragraph element at the end of my list (with nothing in it) and I want to show the message (<p>No results found for "${input}") is there some js I can use to accomplish this? The script above is working for the searching, but not working for the message.
Finished result:
/*Search Songs*/
function searchSongs(){
let input = _('#songSearch').value.toLowerCase();
let items = _all('.item');
let dividers = _all(".divider");
let counter = 0;
for (let i = 0; i < items.length; i++) {
if (!items[i].innerHTML.toLowerCase().includes(input)) {
items[i].style.display = "none";
counter++;
}
else {
items[i].style.display = "";
}
}
// keeping the result 22 letters long (for asthetic purposes)
let maxLen = 22;
if (input.length > maxLen) {
input = input.substring(0, maxLen - 3) + "...";
}
if (counter >= items.length) {
_('#noResults').innerHTML = `No results found for "${input}"` //add no results message if all items are hidden...
} else {
_('#noResults').innerHTML = `` //else hide the message by removing text.
}
}
Thanks, #Asif !!
I've made a little modification in your function. I hope this will solve your issue.
/*Search Songs*/
function searchSongs(){
let input = _('#songSearch').value.toLowerCase();
let items = _all('.item');
let dividers = _all(".divider");
let counter = 0;
for (let i = 0; i < items.length; i++) {
if (!items[i].innerHTML.toLowerCase().includes(input)) {
items[i].style.display = "none";
}
else {
items[i].style.display = "";
counter++;
}
}
// add noresults message at end if all list divs are hidden
if (counter > 0) {
_('.noResults').innerHTML = `<p>No results found for "${input}"`
}
}
I asked this previously but didn't get an answer that applied to my project. I am trying to load images to a table dynamically without having to use server side code. It works, but I want to be able to have an infinite loop that breaks when a picture fails to load, rather than hard code the number of rows I need. That way I won't ever have to update the code, I'll just be able to add pictures to a folder if I want to expand the table.
Right now the "onerror" attribute hides the failed image, but I also want to break out of the outer loop (loop1).
function headCatalogLoader() {
var table = document.getElementById("catalog");
var meshNum = 0;
var uniqueID = 0;
loop1:
for (var i = 0; i <= 50; i++) { // i made it 50 instead of infinite for now
var row = table.insertRow(i);
loop2:
for (var k = 0; k <= 2; k++) { // 2 is because 3 columns
var skinTone = "none";
var cell = row.insertCell(k);
if (k == 0) {
skinTone = "lgt";
}
else if (k == 1) {
skinTone = "med";
}
else if (k == 2) {
skinTone = "drk";
}
cell.innerHTML = "<img src=\"headimgs/head" + skinTone + meshNum + ".png\" id=\"head" + uniqueID + skinTone + "\" onclick=\"previewIt(this)\" onerror=\"$(this).hide();\" />";
uniqueID++;
}
meshNum++;
}
var tbody = $("table tbody");
tbody.html($("tr",tbody).get().reverse());
}
Breaking from within the attribute is out of the loop's scope and doesn't work. Also using
$('img').on("error", function () {
break loop1;
});
inside loop2 doesn't do anything. Someone suggested I use a recursive method and rewrite my function, but that won't work for me since I'm dynamically creating a table and using image names that correspond to the loop. Any help or suggestions would be wonderful!
I'm thinking you could use an XMLHttpRequest to check the response for that URL before trying to put it onto the page. If status is not 404 then insert image else break loop1. Something like this might work:
function headCatalogLoader() {
var table = document.getElementById("catalog");
var meshNum = 0;
var uniqueID = 0;
loop1:
for (var i = 0; i <= 50; i++) { // i made it 50 instead of infinite for now
var row = table.insertRow(i);
loop2:
for (var k = 0; k <= 2; k++) { // 2 is because 3 columns
var skinTone = "none";
var cell = row.insertCell(k);
if (k == 0) {
skinTone = "lgt";
} else if (k == 1) {
skinTone = "med";
} else if (k == 2) {
skinTone = "drk";
}
// note: you'll need to use an absolute path for imageUrl
var imageUrl = "http://example.co.uk/example/headimgs/head" + skinTone + meshNum + ".png";
var xhttp = new XMLHttpRequest();
xhttp.open('HEAD', imageUrl, false);
xhttp.send();
if (xhttp.status !== 404) {
cell.innerHTML = "<img src=" + imageUrl + " id=\"head" + uniqueID + skinTone + "\" onclick=\"previewIt(this)\" onerror=\"$(this).hide();\" />";
uniqueID++;
} else {
break loop1;
}
}
meshNum++;
}
var tbody = $("table tbody");
tbody.html($("tr", tbody).get().reverse());
}
Note: you'll need to use an absolute path for the XMLHttpRequest. I've just used example.co.uk/example because I don't know your URL.
I'm guessing you're only expecting it to error if the image is not found, because that would indicate that you've reached the last image in your folder, which is why I checked !== 404, if you want to break in the case of any error (such as 500 internal server error), it might be best to change if (xhttp.status !== 404) to if (xhttp.status === 200).
I have a for loop which looks like this:
for (var i = 0; i < list.length; i++) {
It is looping through Firebase data in the database and returning all the data in the database.
However, I want it to only go up to the first 10 database items. So I changed the loop to:
for (var i = 0; i < 9; i++) {
But this fails to display any results when the there are less than 10 pieces of data in the database. However, if I set the number to however many objects I have in the database, for example 10 because I have 10 objects, it displays them all. But any less than this number and I just get a blank webpage.
Here is the webpage when I have 10 objects in my Firebase database:
And here it is when I remove one of those objects:
I have no idea why this is happening - The logic is correct - if i is less than 9 then display the data - But instead it only displays it when it equals 9.
Here is the full JS:
function refreshUI(list) {
var lis = '';
var lis2 = '';
var lis3 = '';
var lis4 = '';
for (var i = 0; i <= 9; i++) {
lis += '<li data-key="' + list[i].key + '" onclick="addText(event)">' + list[i].book + '</li>';
lis2 += genLinks(list[i].key, list[i].book)
};
for (var i = 10; i < list.length; i++) {
lis3 += '<li data-key="' + list[i].key + '" onclick="addText(event)">' + list[i].book + '</li>';
lis4 += genLinks(list[i].key, list[i].book)
};
document.getElementById('bookList').innerHTML = lis;
document.getElementById('bookList2').innerHTML = lis2;
document.getElementById('bookList3').innerHTML = lis3;
document.getElementById('bookList4').innerHTML = lis4;
};
function genLinks(key, bkName) {
var links = '';
links += '<img src="images/bin.png" style="width: 24px; height: 24px; transform: translateY(-7px); opacity: .4;"></img> ';
return links;
};
function del(key, bkName) {
var response = confirm("Are certain about removing \"" + bkName + "\" from the list?");
if (response == true) {
// build the FB endpoint to the item in movies collection
var deleteBookRef = buildEndPoint(key);
deleteBookRef.remove();
}
}
function buildEndPoint (key) {
return new Firebase('https://project04-167712.firebaseio.com/books/' + key);
}
// this will get fired on inital load as well as when ever there is a change in the data
bookList.on("value", function(snapshot) {
var data = snapshot.val();
var list = [];
for (var key in data) {
if (data.hasOwnProperty(key)) {
book = data[key].book ? data[key].book : '';
if (book.trim().length > 0) {
list.push({
book: book,
key: key
})
}
}
}
// refresh the UI
refreshUI(list);
});
If anybody has any help I'd greatly appreciate it!
When the list size is shorter than 10, you will get an error in the loop because you will eventually address a property (like key) that does not exist on list[i] (since it is undefined). If you would check the console, you would notice that this error is reported.
To fix this, change the condition of the first for loop like this:
for (var i = 0; i < Math.min(10, list.length); i++) {
This way, the loop will never iterate to an entry that does not exist. It will stop after 9 or after list.length-1 whichever comes first.
Alternatively, you can just put the two conditions with an && operator:
for (var i = 0; i < 10 && i < list.length; i++) {
I'm looking for simple solution for a loop where I have to confirm each element. I was looking at pausing and resuming, but it's quite a hassle. Is there any other way to make it easy? I'm sure that this problem is not so rare and many people have stuck upon it.
What I want to achieve is this - I'm looping through the list and if I don't find item by its EAN code then it opens search function to find this and after the item is found (or not) user clicks Next and resume with looping until same situation occurs.
Some code that I have for now:
for(var f = 0; f < biLen; f++){
var ean_parsed = parsedList[i][1];
if(beerList[f].get("ean") === ean_parsed){
console.log("Beer found: " + beerList[f].get("beer_name"));
break;
} else {
if(f === biLen - 1){
//open modal, search for item and then continue looping
console.log("B'r not found: " + parsedList[i][0]);
}
}
}
edit (whole function code instead of piece of it):
function parserCompareList(){
var parsedList = parseResult;
var piLen = parsedList.length;
var beerList = listaPiwArr;
var biLen = beerList.length;
var new_offer = [];
var counter = document.getElementById('imHeader');
for(var i = 0; i < piLen; i++){
counter.innerHTML = i + "/" + piLen; //plain text that's keeping where we actually are with this
for(var f = 0; f < biLen; f++){
var ean_parsed = parsedList[i][1];
if(beerList[f].get("ean") === ean_parsed){
console.log("Beer found: " + beerList[f].get("beer_name"));
break;
} else {
if(f === biLen - 1){
console.log("B'r not found: " + parsedList[i][0]);
}
}
}
}
}
ANSWER:
var indexCache;
function loop() {
var index = indexCache || 0;
for (var f = index; f < biLen; f++) {
var ean_parsed = parsedList[i][1];
if (beerList[f].get("ean") === ean_parsed) {
console.log("Beer found: " + beerList[f].get("beer_name"));
break;
} else {
if (f === biLen - 1) {
// Assuming $modal is the bootstrap modal
indexCache = f;
//$modal.modal().one('hide.bs.modal', loop);
$('#importModal').modal('show').one('hidden.bs.modal', loop) // <-- this one works like a charm
return;
}
}
}
}
loop();
var indexCache;
function loop() {
var index = indexCache || 0;
for (var f = index; f < biLen; f++) {
var ean_parsed = parsedList[i][1];
if (beerList[f].get("ean") === ean_parsed) {
console.log("Beer found: " + beerList[f].get("beer_name"));
break;
} else {
if (f === biLen - 1) {
// Assuming $modal is the bootstrap modal
indexCache = f;
$modal.modal().one('hide.bs.modal', loop);
return;
}
}
}
}
loop();
We have an indexCache variable that holds the index of the beer that is being handled.
If EAN is found, great! we handle it and move on to the next beer.
If not, we store the current beer index in the cache and show the modal and quit the loop immediately. When the modal is hidden, the loop resumes from the cached index.
PS. I am assuming you are using Twitter Bootstrap modal. And therefore, adding a handler to the event 'hide.bs.modal'. But similar thing could be done with your own modal implementation if that is the case.
Assuming I have a checkbox array which allows multiple selections to be made. I would like to save only the first selection in a variable but still record and save the other selections (in another variable). Something like :
First_Selected = this_selection (x)
Other_Selected = these_selections(1,2,3)
Using the loop below how would I achieve this??
var Selection_one = " ";
var other_Selections = " ";
for (i = 0; i < tbls.length; i++) {
Selection_one = ?? ;
other_Selections += ?? ;
}
with your logic
var Selection_one = " ";
var other_Selections = " ";
for (i = 0; i < tbls.length; i++) {
if(i == 0)
Selection_one = tbls[i];
other_Selections += tbls[i] + ',' ;
}
Use .slice() to select all the elements after the first one, and then use .join() to concatenate all the values.
var selection_one = tbls[0];
var other_selections = tbls.slice(1).join(' ');