I have this piece of code and I was wondering how I would be able to display an alert message when the embedded link does not exist. Is this possible?
<script type="text/javascript">
function soniaZsound(track) {
var link = 'https://ssl.gstatic.com/dictionary/static/sounds/de/0/'+track+'.mp3';
document.getElementById("myspan").innerHTML='<embed src="'+link+'"' +
'onError="alert("sorry this word is not in the database");"' +
'`autostart=true loop=false hidden=true` type="audio/mp3">';
}
</script>
<body>
<span id="myspan"></span>
<form name= "searchwords" id="searchwords">
How does this word sound: <input type="text" name= "soundSearch"><input type="button"
value="GO" onclick="soniaZsound(document.forms['searchwords']['soundSearch'].value);">
</form>
</body>
If you are allowed to read content from that domain you can do a HTTP HEAD request to see if the file exists:
$.ajax({
url:'http://www.example.com/somefile.ext',
type:'HEAD',
error:
function(){
//file does not exists
},
success:
function(){
//file exists
}
});
Related
I try to display an image on a php page in js, knowing that my image via an input file.
here is my code:
<script>
function image(){
var x = document.getElementById("image_uploads");
var test = URL.createObjectURL(x);
//document.getElementById("img").src = URL.createObjectURL(x);
}
</script>
<body>
<div class="frItem31">
<form name="saisie" action="" method="post">
Image 1 :<input type="file" id="image_uploads" class="image_uploads" name="image_uploads" accept="image/*"/>
<br>
<img id="img" class="img">
<br>
<input type="button" id="calcVitesse" class="calcVitesse" value="calculer la vitesse" onclick="image()">
</form>
</div>
</body>
here is the error I get:
Uncaught TypeError: Failed to execute 'createObjectURL' on 'URL': Overload resolution failed.
at image (image.php:20:32)
at HTMLInputElement.onclick (image.php:80:125)
image # image.php:20
onclick # image.php:80
Could you help me please !?!
G.B.
you're passing an HTML element instead of a file. To get the file, use .files property, which behaves like an Array, so you can iterate it. see: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/file#getting_information_on_selected_files
try this:
function image() {
var x = document.getElementById("image_uploads");
if (x.files.length) {
var test = URL.createObjectURL(x.files[0]);
}
}
I have an HTMLForm which on click forward me to new HTML page i have Two JS files for each HTML
What i am doing and trying to achieve is :-
On 1st HTML when i click search button i am storing the values of input field and select field in different variables
What I am trying to achieve is when on search new page loaded I want to use that new variable into my new JavaScript
I have Two HTML files also
here is the code of my file1.html
<form id="formId" action="file2.html">
<div class="container">
<h4>Date:</h4>
<input type="text" id="startdate" name="fromdate" width="276"
placeholder="dd/mm/yyyy" required />
<h4>Outlets:</h4>
<select name="outlet" id="myselect">
<option>ALL</option>
</select>
<div>
<br>
<button id="btn-search" class="btn btn-default" type="submit">
<i class="fa fa-search"></i> Search
</button>
</div>
</div>
</form>
<script type="text/javascript" src="JS/JavaScript1.js"></script>
In This HTML i have a form having one date field and one select field
On clicking submit Button I am Storing the values of date and Outlet into a variable in my JavaScript file which is JavaScript1
**Here is my JavaScript1 file **
$(document).ready(function() {
$("#btn-search").click(function(){
var currentlyClickedOutletform = $("#myselect").find(":selected")[0].textContent;
var currentlyClickedStartdateform= $("#startdate").val();
$.ajax({
url : "LinkReportMain",
method : "POST",
data : {
Outletlink : currentlyClickedOutletform,
Fromdatelink : currentlyClickedStartdateform,
},
});
});
});
var currentlyClickedOutletform and var currentlyClickedStartdateform are the two values i want to use in my new JavaScript file which is JavaScript2
my file2.html is
in this file i am just populating an HTML table so i only have an div tag inside
<div id="tbl"></div>
<script type="text/javascript" src="JS/JavaScript1.js"></script>
<script type="text/javascript" src="JS/JavaScript2.js"></script>
And finally my JavaScript2 is
in this file I want to use the values of first Javascript file
$(document).ready(function() {
alert(currentlyClickedOutletform)
$('.loader').show();
$('.overlay').show();
$.ajax({
url: "LinkReportMain",
method: "GET",
dataType: "json",
contentType: "application/json; charset=utf-8",
data: {
fromdate: $("#startdate").val(),
todate: $("#enddate").val(),
outlet: $("#all").val()
},
success: function(data) {
let formatedData = formatData(data);
renderTable(formatedData);
$('.loader').hide();
$('.overlay').hide();
}
});
});
NOTE to see the code of JavaScript2 file please see the snippet its not working but my code was not getting formatted so I have put that into snippet
So what I am trying to achieve is to use the Variable of JavaScript1 into JavaScript2
i am doing it right but its not working any one out here who can guide em please, it would be very helpfull
Without localStorage
First set type="button" of you search button or prevent form submit by e.preventDefault(); on click event.
$("#btn-search").click(function(){
e.preventDefault();
// your other code
//code to redirect to another html page
var queryString = "?para1=" + currentlyClickedOutletform + "¶2=" + currentlyClickedStartdateform;
window.location.href = "page2.html" + queryString;
})
for other page script:
var queryString = decodeURIComponent(window.location.search);
queryString = queryString.substring(1);
var oldParam = queryString.split("&");
var param1 = oldParam[0];
var param2 = oldParam[1];
Now you can use param1 and param2.
**localStorage ** :
in first page store object :
localStorage.setItem("outletFrom",currentlyClickedOutletform);
localStorage.setItem("startDate",currentlyClickedStartdateform);
in seond page get data:
var currentlyClickedOutletform = localStorage.getItem("outletFrom");
var currentlyClickedStartdateform= localStorage.getItem("startDate");
i need to make it so that when a zip code is typed into the box and the submit button is clicked, the name of the city shows up under it. when i click the button after putting a zip code the city name doesn't show up. it says the error is that wallOfText is not a function but i'm not sure how to fix it. any help would be appreciated!! here's the code:
<!DOCTYPE html>
<html lang="en">
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<meta charset="UTF-8">
<title>Example</title>
</head>
<body>
Enter your zip code:<br><input type="text" id="zipBox" name="zipCode"><br><br>
<button onclick="weatherFunction()">Submit</button>
<p id="result"></p>
<script>
function weatherFunction() {
var zip = document.getElementById("zipBox").value;
jQuery(document).ready(function ($) {
$.ajax({
url: "http://api.openweathermap.org/data/2.5/weather?zip=" +zip+ ",us&appid=b3456f9acbfa64fc4495e6696ecdc9a5",
dataType: "jsonp",
success: function (wallOfText) {
city = wallOfText("name");
if (zip != null) {
document.getElementById("result").innerHTML = wallOfText;
}
}
});
});
}
</script>
</body>
</html>
The issue you have is that you're attempting to call wallOfText like it's a function, when in fact it's the object which has been deserialised from the response of the AJAX call. As such, you need to access the object's name property to set the city variable, then use that to set the text() of the #result element.
Note that the document.ready handler within the function is redundant, and you should be doing the zip value validation before you make the request. I also updated the logic to use jQuery to bind the event handler on the button instead of the outdated onclick attribute. Try this:
jQuery(function() {
$('#send').click(function() {
var zip = $("#zipBox").val();
if (zip !== '') {
$.ajax({
url: "http://api.openweathermap.org/data/2.5/weather?zip=" + zip + ",us&appid=b3456f9acbfa64fc4495e6696ecdc9a5",
dataType: "jsonp",
success: function(wallOfText) {
var city = wallOfText.name;
$("#result").text(city);
}
});
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
Enter your zip code:<br>
<input type="text" id="zipBox" name="zipCode" value="90210" /><br /><br />
<button type="button" id="send">Submit</button>
<p id="result"></p>
I have a a python script which is being fed and executed from a html file. This script writes a json file and i'd like to read the json file with javascript. The values are definetely being passed from html to python and they are being processed correctly.
As soon as I want to load the json-file the web console throws an error saying "data is not defined".
The relevant python code:
data = {}
for i in range(t_final.size):
data[i] = t_final[i]
with open('data.json', 'w') as fp:
json.dump(data, fp)
Javascript call:
<script type="text/javascript" src="/cgi-bin/data.json"></script>
<script type="text/javascript" >
function load() {
var mydata = JSON.parse(data);
var div = document.getElementById('xbtn');
}
</script>
<div id="xbtn"></div>
This is what the json-file contains after executing
{"0": 0.0, "1": 0.013508013525931116, ... , "1999": -0.0}
I am working on this for days now and maybe I just don't see it. I presume it is something very obvious.
thanks for any help.
So. I have managed to set up ajax properly. The problem was that the endpoint was set wrong (obviously). So the data to be processed was sent to the json-file and not to the python script where it is supposed to be processed.
The ajax:
$(function(){
$('#btn2').click(function(){
$.ajax({
url: 'https://192.168.80.27/cgi-bin/verlauf_Grenzen.py',
type: 'post',
data: $('.senddata').serialize(),
success: function(data) {
window.alert("Data sent!");
},
});
});
});
the HTML:
<form class="senddata" method="POST" name="getdata1">
<input id = "testa1" type = "number" step=0.01 name = "a1" />
<input id = "testv1" type = "number" step=0.01 name = "v1" />
<input id = "tests1" type = "number" step=0.01 name = "s1" />
<input id = "testj1" type = "number" step=0.01 name = "j1" />
</form>
<input id="btn2" class="button" type="button" value="Send Values" value="Click"/>
This sends the form elements to the python script.
Suppose I have 2 html files: form.html and confirm.html
form.html just have a text field and a submit button, when you hit submit it will display what you just typed in text field.
<HTML>
<HEAD>
<TITLE>Test</TITLE>
<script type="text/javascript">
function display(){
document.write("You entered: " + document.myform.data.value);
}
</script>
</HEAD>
<BODY>
<center>
<form name="myform">
<input type="text" name="data">
<input type="submit" value="Submit" onClick="display()">
</form>
</BODY>
</HTML>
Now I want that when hit submit button it will display entered value in confirm.html. What should I do? I mean what should be in confirm.html and how data from form.html be used in other location, do I need create a separate JavaScript file to store JS function so I can use it in both 2 html files. I am kind of new to all kind of stuff.
Note: No PHP or server side language or anything super here, just 2 html files in my Desktop and I want to test using FireFox.
Thank you!
You can try using localStorage or cookies. Check one of the 2 solutions found below...
1 - If you have HTML5, you can store the content of you input into the localStorage.
Try this example:
form.html:
<html>
<head>
<title>Test</title>
<script type="text/javascript">
// Called on form's `onsubmit`
function tosubmit() {
// Getting the value of your text input
var mytext = document.getElementById("mytext").value;
// Storing the value above into localStorage
localStorage.setItem("mytext", mytext);
return true;
}
</script>
</head>
<body>
<center>
<!-- INLCUDING `ONSUBMIT` EVENT + ACTION URL -->
<form name="myform" onsubmit="tosubmit();" action="confirm.html">
<input id="mytext" type="text" name="data">
<input type="submit" value="Submit">
</form>
</body>
</html>
confirm.html:
<html>
<head>
<script>
// Called on body's `onload` event
function init() {
// Retrieving the text input's value which was stored into localStorage
var mytext = localStorage.getItem("mytext");
// Writing the value in the document
document.write("passed value = "+mytext);
}
</script>
</head>
<body onload="init();">
</body>
</html>
2 - Also, as #apprentice mentioned, you can also use cookies with HTML standards.
Try this example:
form.html:
<html>
<head>
<title>Test</title>
<script type="text/javascript">
// Function for storing to cookie
function setCookie(c_name,value,exdays)
{
var exdate=new Date();
exdate.setDate(exdate.getDate() + exdays);
var c_value=escape(value) + ((exdays==null) ? "" : "; expires="+exdate.toUTCString());
document.cookie=c_name + "=" + c_value;
}
// Called on form's `onsubmit`
function tosubmit() {
// Getting the value of your text input
var mytext = document.getElementById("mytext").value;
// Storing the value above into a cookie
setCookie("mytext", mytext, 300);
return true;
}
</script>
</head>
<body>
<center>
<!-- INLCUDING `ONSUBMIT` EVENT + ACTION URL -->
<form name="myform" onsubmit="tosubmit();" action="confirm.html">
<input id="mytext" type="text" name="data">
<input type="submit" value="Submit">
</form>
</body>
</html>
confirm.html:
<html>
<head>
<script>
// Function for retrieveing value from a cookie
function getCookie(c_name)
{
var i,x,y,ARRcookies=document.cookie.split(";");
for (i=0;i<ARRcookies.length;i++)
{
x=ARRcookies[i].substr(0,ARRcookies[i].indexOf("="));
y=ARRcookies[i].substr(ARRcookies[i].indexOf("=")+1);
x=x.replace(/^\s+|\s+$/g,"");
if (x==c_name)
{
return unescape(y);
}
}
}
// Called on body's `onload` event
function init() {
// Retrieving the text input's value which was stored into a cookie
var mytext = getCookie("mytext");
// Writing the value in the document
document.write("passed value = "+mytext);
}
</script>
</head>
<body onload="init();">
</body>
</html>
What you could do is submit the form using a get method (method="get"), and send it to your confirm.html page (action="./confirm.html").
Then, you could use jQuery to retrieve the values from the URL from your confirm.html page.
This website provides a method to do that: http://jquerybyexample.blogspot.com/2012/06/get-url-parameters-using-jquery.html .
Then, all you have to do is call your display() method.
Seams like a fit for persist.js, which will let you save and load data in the user's browser. After including its javascript file, you can save data like this:
var store = new Persist.Store('My Application');
store.set('some_key', 'this is a bunch of persistent data');
And you can later retrieve the saved data in another html page like the following:
var store = new Persist.Store('My Application');
val = store.get('some_key');
You could also, instead of changing the page, change the content of the page. Upon submission just change the page using the innerHtml variable.