The below Jquery does not run within my browser even though the syntax is correct( checked via online syntax checker) and the functions do run (tested with pure JS). Why is it that so?
I apologize in advance if the answer to this question is rather simple but after 15min of googling I could not arrive at an answer.
JAVASCRIPT:
document.getElementById('overlay').addEventListener('click', function( {
closeLightBox()
});
function closeLightBox() {
$("#overlay").fadeOut(1000);
}
function lightbox(x) {
}
HTML
<!DOCTYPE html>
<html>
<head>
<title> Lightbox </title>
<link rel="stylesheet" type="text/css" href="lightboxcss.css">
</head>
<body>
<div id = "overlay"> </div>
<img src="batman.jpg" alt="" href="javascript:void(0)" onclick="lightbox(1)" id="batman" style="height:100px;width:160px;margin-left:45%;margin-top:16%;">
<br><br><br><br>
<p> RANDOM TEXT STUFF </p><br><br>
<p> 328ueekfuuirgh40t43h8hohro8ht </p>
<script src="lightboxjs.js"> </script>
</body>
</html>
I assume that javascript code is located in your .js file "lightboxjs.js". Did you include the jQuery library anywhere?
If you don't, start by adding this line <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.4/jquery.min.js"></script> before including your custom javascript file.
$(document).ready(function(){
//page is ready
$("#overlay").on("click",function(){
this.fadeOut(1000);
});
});
You cannot add an eventlistener if the dom isnt loaded. Also dont forget to include jquery before executing the upper script
...
Where are you calling the jquery lib? You need to load the jquery just above lightboxjs.js and may as well use jquery syntax to listen to the #overlay click event.
Related
I need build code such : http://fiddle.jshell.net/bwKZt/152/
but my code dosen't work ! I am a beginner. Please help me.
index.php:
<!DOCTYPE html><html>
<head>
<script>
$("#label").bind("keyup", changed).bind("change", changed);
function changed() {
$("#url").val(this.value);
}
</script>
</head>
<body>
<input type="text" id="label" />
<input type="text" id="url" readonly />
</body>
</html>
Some of the JavaScript here isn't native JavaScript , but is using a plugin called jQuery that makes searching and manipulating HTML elements easier.
When you see $(), that's the jQuery way of finding elements. But it won't work because you don't have jQuery referenced at all.
If you don't want to use jQuery, you can find elements with something like document.getElementById('label').
But lots of people use jQuery to make referencing page elements short and sweet, as with $('#label').
Try to reference jQuery first, like:
<!DOCTYPE html><html>
<head>
<!-- The below line references an externally hosted copy of jQuery 2.2.4 -->
<script type="text/javascript" src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
<script>
// The below chunk is telling it to bind to the keyup event only AFTER the document has fully loaded.
// Sometimes when your binding code is executed, the elements you wish to bind to aren't loaded yet.
$(document).ready(function(){
$("#label").bind("keyup", changed).bind("change", changed);
});
function changed() {
$("#url").val(this.value);
}
</script>
</head>
<body>
<input type="text" id="label" />
<input type="text" id="url" readonly />
</body>
</html>
The first problem is because you haven't include jquery with a script tag to solve that add this code in the head of you html file if you have the Internet connection to load Jquery from CDN
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.js"></script>
or you can download Jquery file from Jquery site and you will have it locally
after that you must execute this code after the executing the jquery ready function
$(document).ready(function(){
$("#label").bind("keyup", changed).bind("change", changed);
function changed() {
$("#url").val(this.value);
}
})
Okay so all I am trying to do is make the jquery work in my javascript file which is linked to a html file. I created a totally new file for this to test it. The whole contents of the html file are:
<!DOCTYPE html>
<html>
<script src="C:\Users\Me\Desktop\Programming\jquery-1.12.4" type="text/javascript"></script>
<script src="check.js"></script>
<head> <h1>test</h1>
</head>
<body>
</body>
</html>
And the whole content of the js file is
$("h1").css("color", "red");
But when I open the html file in chrome the change I put in the js file with jquery doesn't show up (e.g the heading is not red). I just want to figure out how to make it so that it does.
EDIT:
Thanks for the help everybody, I was able to make it work :)
did you try this?
$(document).ready(function(){
$("h1").css("color", "red");
});
not sure but, does your browser access local files directly? im pretty sure that browser sandbox gonna reject that, maybe cors plugin on chrome?
EDIT:
try importing this instead...
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.2/jquery.min.js"></script>
Move your <h1> tag to be in the <body>
Move your <script> tags to the <head>
Replace your code in your JS file with what imvain2 said, so
that the JS will load once your document is ready.
Make sure you are correctly referencing your jQuery script. You can even use this to test it out:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.2/jquery.min.js"></script>
Try to use jQuery CDN, this way you don't need to worry if jQuery loaded correctly or not.
$(document).ready(function() {
$("h1").css("color", "red");
});
<!DOCTYPE html>
<html>
<script src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
<script src="check.js"></script>
<head></head>
<body>
<h1>test</h1>
</body>
</html>
There are a couple issue as described in other posts. All your meta, script, css references, etc. should go int the <head> and never header tags. Also need to correctly reference your javascript files.
<head>
</head>
<body>
<header>
<h1>test</h1>
</header>
</body>
Example: JSFiddle
If you want to use jquery in .js file all you need to do is type: src=" ..." above code.
It should be easy,
but as easy as it should be I can't solve the problem.
If I'm typing the following HTML and JS code into an online editor,
everything works fine but if I'm typing this into my (offline) editor it won't work.
Here's the online code:
http://jsbin.com/kenurunahu/1/edit?html,js,output)
I bet it has something to do with the loading order and how the files are linked.
Thats how my (lokal) HTML-file looks like (where the files are linked):
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" content="Index.css">
<script src="Script.js"></script>
</head>
<body>
<p id="demo">
something
</p>
</body>
</html>
Many Thanks for Help!
[Update]
Firefox and Chrome display the JS file. Sometimes I get an error message that says 'innerHTML is null', but if I write the same code into the console everything works fine.
you have the error when the js script is loaded before the html dom is fully loaded by the browser. A simple solution for your testing is to place the script include at the end of your html page, like this :
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" content="Index.css">
</head>
<body>
<p id="demo">
something
</p>
<script src="Script.js"></script>
</body>
</html>
A better solution is to run your script only when the dom is fully loaded. For example with the body onload event :
<body onload="yourFunc()">
Or event better by using only js code, for example with jquery ready function or by writing a simple custom handler that should work on all major browsers :
document.addEventListener("DOMContentLoaded", function(event) {
//call your func here
});
Hope that helps.
A few guesses:
Capitalization is important. If the file is named script.js do not link to Script.js
Is your js file in the same folder as the index.html document? Because that is what you are saying.
Normally, we arrange our file structure something like this:
public_html
- css
- js
- img
- inc
If your styles/scripts are stored in sub-folders, such as js and css, then you must amend your references to:
<link rel="stylesheet" content="css/Index.css">
<script src="js/Script.js"></script>
As a good practice, your scripts should be placed at the closing of body tag. External scripts are blocking and hence it would make sense we do not put them at the top. Also, when your script placed at the top runs, your DOM may not be ready, which means any element your script is trying to access may not be present in DOM at all which results in your error.
Hence, all your scripts should be at the closing of body tag. That way when the script loads and runs, you can be assured that the DOM is ready.
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" content="Index.css">
</head>
<body>
<p id="demo">
something
</p>
<script src="Script.js"></script>
</body>
</html>
Here is my Jquery code.Please have a look through it and do help me?
<script type="text/javascript" src="jquery-1.9.1.min.js"></script>
<script type="text/javascript">
$("#rec").click(function() {
$("#tab1").toggle();
});
</script>
<input type="button" class="button" id="rec" value="Sample"/>
<div id="tab1">
Hello this is a sample jquery toggling function.
</div>
Just wrap your Jquery code inside $(document).ready(function(){}) as shown below :-
<script type="text/javascript">
$(document).ready(function(){
$("#rec").click(function(event) {
event.preventDefault();
$("#tab1").toggle();
});
});
</script>
Read More on $(document).ready() here.
Working Demo
It seems that there is an error while loading JQuery try this
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
Use $(document).ready(function(){}, to execute the js code when then document will be loaded or put your scripts just before the </body> tag.
I ll take a guess here. (I'm feeling lucky!) (update:seems i wasn't lucky but read this anyway it's usefull)
Your code does not work because you say "do something when the html element with id="rec" is clicked" and "do something to the html element with id="tab1""
My guess is, you have more than one html element with id="rec" and/or more than one html element with id="tab1" in your code.
id value of html elements must be unique across a webpage! If there are more than one html elements with the same id then the jquery selector doesn't know when to fire, and also browsers behavior can be unexpected. This may be the cause of internet explorer nagging.
You need to add compatibility meta just after <head> tag:
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge;chrome=1" />
I'm writing text to a page using document.write for a Chrome extension, but the associated custom CSS isn't applied:
<!DOCTYPE html>
<html>
<head>
<title>TITLE GOES HERE</title>
<link rel="stylesheet" href="css/popup.css" type="text/css" />
</head>
<body>
<script type="text/javascript">
...
function showFolder(folder) {
console.debug('FOLDER: '+folder.title);
document.write('<p>'+folder.title+'<br></p>');
}
</script>
</body>
</html>
The CSS is simple, just for debugging:
p {
color: red;
}
I can get it to work if I put the stylesheet link inside the function showFolder, but that can't be the proper way to do it. I'm learning jscript/CSS on the fly, so the answer is probably something remedial. Is the problem in the jscript, the CSS or both?
Use innerHTML.
<div id="towrite"></div>
then you can write in it like this:
div=document.getElementById('towrite');
div.innerHTML = '<p>'+folder.title+'<br></p>';
If you run your document.write() before the page finishes loading (perhaps calling your showFolder call directly from a script on the page), then the text will be written into the document as you might expect.
However, if you call document.write after the page loads, as in an event handler, you will be writing an entirely new page. This is usually not what you want.
Instead, follow Zoltan's advice and set the innerHTML property of an empty div.
I'm not javascript expert... I mainly use jQuery.. but try this, kind of makes sense:
<!DOCTYPE html>
TITLE GOES HERE
<script type="text/javascript">
...
function showFolder(folder) {
console.debug('FOLDER: '+folder.title);
document.write('<p>'+folder.title+'<br></p>');
}
</script>
<link rel="stylesheet" href="css/popup.css" type="text/css" />
EDIT:
So the above didn't work, but I just thought about another solution. When are you actually calling the function? Try to put it in <body onLoad="functionnamehere()">
No idea if that works, but give it a try.