Is it possible to load javascript without jQuery? I spent the better portion of yesterday evening simply trying to create the most basic HTML page with working CSS and Javascript and - despite the numerous methods I have tried - none of them have worked. Here is my basic HTML page:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>title</title>
<link rel="stylesheet" href="style.css">
<script src="script.js" type="text/javascript"></script>
</head>
<body>
<div>On</div>
<input type="button" onclick="popup()" value="Click Me!">
</body>
</html>
This is being hosted locally on XAMPP, the page displays fine and the CSS works fine, the javascript is in the same directory as the html page and works fine when written inline with the HTML. However the js does not work in any of the following scenarios when trying to include it as an externality:
When application/javascript is used above it still doesn't work. All I receive in either case (in the Firebug script window) is "popup()" and that's it. Here is the script.js file:
function popup() {
alert("Hello World")
}
This js also doesn't work (I tried it even though I'm not parsing XML):
//<![CDATA[
function popup() {
alert("Hello World")
}
//]]>
nor this:
document.addEventListener('DOMContentReady', function popup() {
alert("Hello World")
})
nor this:
<script type="text/javascript">
function popup() {
alert("Hello World")
}
</script>
Not that I really expected it too, but I was getting desperate. If anyone knows what's going on, I'd appreciate any info.
I'm open to this being an issue with hosting this locally on XAMMP but find it doubtful as CSS and HTML are both flying. However the js works if I include it inline with the HTML(?). If it helps, when Firebug displays popup() in the script window it also shows an #conn1source connection.
UPDATE: according to one of the suggestions in the comments if I only write the following in the js file it works:
alert("Hello World")
however the function does not. So I'm guessing this means that I wrapped the function somehow incorrectly in the js file, but I'm following standard practice as far as I am aware.
Related
I'm really new in Wordpress, Javascript and HTML so I know this question is really basic, but I wasn't able to find it solved anywhere.
I want to create some variables in javascript and then display them in my page which is created in Wordpress.
Reading other posts I've found I need to insert a javascript code that at the end stores my variable this way (dummy version):
<script type="javascript">
document.getElementById('test').innerHTML = 'hello';
</script>
And then on the text block I want to display my variable to be displayed I should add this code:
<body>
<p id="test"></p>
</body>
However I've tried adding the javascript in the header (Tatsu header) and also tried adding it in the text block (HTML version) in different combinations and it never worked. Tried adding the script block before and after the body block, and also tried having it inside, before and after the display line.
If I try the following it works:
<body>
<p>hello</p>
</body>
So I guess my problem is that I'm not setting the variable properly.
Can anyone help? Apologies if this is already solved somewhere, spent some hours and wasn't able to find it.
Thank you in advance.
Your problem is the type of which you're using here:
<script type="javascript">
I noticed this whilst constructing an example of this problem.
javascript is not a correct mime type.
It should be text/javascript as per https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types/Common_types
Please note this is not a complete list. Such as application/javascript also being valid. Please also see https://www.iana.org/assignments/media-types/media-types.xhtml
Working example:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
</head>
<body>
<p id="test">
This shouldn't show up
</p>
<script type="text/javascript">
console.log("####### JAVASCRIPT IS RUNNING ######")
document.getElementById('test').innerHTML = 'hello';
</script>
</body>
</html>
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>
I have the following code which works properly in chome
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
</head>
<body>
<script>
//<![CDATA[
!function (){
window.stop();
var html = '<!DOCTYPE html>\n<html>\n<head>\n <meta charset="utf-8">\n</head>\n<body>\n \<script>console.log("loaded");<\/script>\ntext\n</body>\n</html>';
document.documentElement.innerHTML = html;
}();
//]]>
</script>
</body>
</html>
It prints "loaded" in the console. The same code does not work by firefox, it does not run the script, just prints the text.
(If you are curious why I need this, you can find it here: https://stackoverflow.com/a/30933972/607033 )
I tried possible solutions like this: https://stackoverflow.com/a/20584396/607033 but they did not work. Any idea how to work this around?
Note: there are many scripts in the HTML, e.g. bootstrap, jquery, facebook, google, etc..., not just a single inline script.
I think there is no way in firefox to replace the complete HTML document with javascript without leaving the actual page. A workaround to reuse the original document and replace only the head and body tags:
$('html').html(html);
does this automatically: it strips out the HTML tags, injects the head and the body and loads the scripts.
ref: https://stackoverflow.com/a/1236372/607033
I have a simple javascript file like so:
$(document).ready(function () {
alert("my controller");
});
I have an HTML file like so:
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
</head>
<body>
<script type="text/javascript" src="/js/generateLineupController.js"></script>
</body>
</html>
for the love of all things holy why in the world would the alert not show? I get a 200 on GET for the javascript file, so it's loading.
Several problems here.
You're trying to load the script twice for some reason. Don't do that. Load it in <head>, or at the end of <body>, but not both.
You're trying to use jQuery syntax ($(...)), but you haven't loaded the jQuery library. You'll need that.
The $(document).ready(...) indicates that you are trying to use jQuery, but you aren't loading jQuery in your page. Check your console log; you will see the errors there.
Also, there's no need to load the script twice with two <script> tags; just load it once.
I had a problem with some functionality working in all browsers except for Safari, and I have reduced the problem down to this.
In my page I have the following script declarations at the end of my body element:
<script type="text/javascript" src="../../Scripts/jquery-1.5.1.min.js"></script>
<script type="text/javascript" src="../../Scripts/jquery-ui-1.8.11.min.js"></script>
<script type="text/javascript" src="../../Scripts/jquery.ui.autocomplete.html.js"></script>
<script type="text/javascript" src="../../Scripts/jquery.validate.min.js"></script>
<script type="text/javascript" src="../../Scripts/jquery.textchange.min.js"></script>
<script type="text/javascript" src="../../Scripts/jquery.reveal.js"></script>
<script type="text/javascript" src="../../Scripts/mainScript.js"></script>
Then inside the mainScript.js file, I have put the following code:
$(function () {
alert("found");
});
In all other browsers, it displays a message box, but in Safari it does nothing.
Safari's javascript debugger lists the script, and can see the contents, but for some reason it's not included.
I found this problem since I tried to call a function in mainScript.js from an inline script inside the html page (the inline script was defined below the mainScript.js definition), and the Safari debugger complained that the function was not found anywhere.
What have I done wrong here, and why does not Safari include this script. All the jquery scripts are included and are working fine.
Your code seems good.
I tried with this code
<!DOCTYPE html>
<html>
<head>
<title>Test</title>
</head>
<body>
<h1>Test</h1>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.0/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
alert("Test");
});
</script>
</body>
</html>
and it works fine (Safari 5.0.5 7533.21.1 on Windows 7).
A couple of questions:
Have you tried calling your function manually from the Error Console? Does it work?
If you place a simple alert("Test."); outside of the document ready function, is it displayed?
If you call jQuery's function from the Error Console, what do you get? Do they work?
The problem was found elsewhere in mainScript.js.
{ class: 'someclass' } was sent as parameter to some method, and class is a reserved word.
This should probably have given errors in other browsers as well, but they gladly ignored it and kept on going.
The fix was simply to change it to { 'class': 'someclass' }