i have created a simple jQuery program.i am new to jQuery technology..please provide me where am i wrong?
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd"
>
<html lang="en">
<head>
<title><!-- Insert your title here --></title>
<script type="text/javascript" src="jquery-1.4.2.min.js">
$(document).ready(function() {
alert("jQuery tutorial for beginners Example");
});
</script>
</head>
<body>
<p> i m here hid me</p>
<!-- Insert your content here -->
</body>
</html>
The script you've written isn't supposed to go inside the jquery script tag. It needs to go in its own one.
<script type="text/javascript" src="jquery-1.4.2.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
alert("jQuery tutorial for beginners Example");
});
</script>
The first one is to load jquery itself - it's like saying "instead of me writing some javascript here, load it from this file instead", the second one is for your own code since you've put code between the script tags.
A script element can have one script. That script can go between the start tag and the end tag or it can go in another file and be referenced with a src attribute.
If there is a src attribute, then the content of the element will be ignored.
If you want two scripts, then you need two script elements.
<script src="jquery.js"></script>
<script>
// Your code
</script>
Example: Jsdiffle
This is a example with last library of Jquery.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd"
>
<html lang="en">
<head>
<title><!-- Insert your title here --></title>
<script src="http://code.jquery.com/jquery-2.0.0.js"></script>
<script src="http://code.jquery.com/ui/1.10.2/jquery-ui.js"></script>
<script type="text/javascript">
$(document).ready(function() {
alert("jQuery tutorial for beginners Example");
});
</script>
</head>
<body>
<p> i m here hid me</p>
<!-- Insert your content here -->
</body>
</html>
Related
How do you properly link a JavaScript file to a HTML document?
Secondly, how do you use jQuery within a JavaScript file?
First you need to download JQuery library from http://jquery.com/ then
load the jquery library the following way within your html head tags
then you can test whether the jquery is working by coding your jquery code after the jquery loading script
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<!--LINK JQUERY-->
<script type="text/javascript" src="jquery-3.3.1.js"></script>
<!--PERSONAL SCRIPT JavaScript-->
<script type="text/javascript">
$(function(){
alert("My First Jquery Test");
});
</script>
</head>
<body><!-- Your web--></body>
</html>
If you want to use your jquery scripts file seperately you must define the external .js file this way after the jquery library loading.
<script type="text/javascript" src="jquery-3.3.1.js"></script>
<script src="js/YourExternalJQueryScripts.js"></script>
Test in real time
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<!--LINK JQUERY-->
<script type="text/javascript" src="jquery-3.3.1.js"></script>
<!--PERSONAL SCRIPT JavaScript-->
<script type="text/javascript">
$(function(){
alert("My First Jquery Test");
});
</script>
</head>
<body><!-- Your web--></body>
</html>
This is how you link a JS file in HTML
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script> - tag is used to define a client-side script, such as a JavaScript.
type - specify the type of the script
src - script file name and path
To include an external Javascript file you use the <script> tag. The src attribute points to the location of your Javascript file within your web project.
<script src="some.js" type="text/javascript"></script>
JQuery is simply a Javascript file, so if you download a copy of the file you can include it within your page using a script tag. You can also include Jquery from a content distribution network such as the one hosted by Google.
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
You can add script tags in your HTML document, ideally inside the which points to your javascript files. Order of the script tags are important. Load the jQuery before your script files if you want to use jQuery from your script.
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script type="text/javascript" src="relative/path/to/your/javascript.js"></script>
Then in your javascript file you can refer to jQuery either using $ sign or jQuery.
Example:
jQuery.each(arr, function(i) { console.log(i); });
Below you have some VALID html5 example document. The type attribute in script tag is not mandatory in HTML5.
You use jquery by $ charater. Put libraries (like jquery) in <head> tag - but your script put allways at the bottom of document (<body> tag) - due this you will be sure that all libraries and html document will be loaded when your script execution starts. You can also use src attribute in bottom script tag to include you script file instead of putting direct js code like above.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Example</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
</head>
<body>
<div>Im the content</div>
<script>
alert( $('div').text() ); // show message with div content
</script>
</body>
</html>
this is demo code but it will help
<!DOCTYPE html>
<html>
<head>
<title>APITABLE 3</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$.ajax({
type: "GET",
url: "https://reqres.in/api/users/",
data: '$format=json',
dataType: 'json',
success: function (data) {
$.each(data.data,function(d,results){
console.log(data);
$("#apiData").append(
"<tr>"
+"<td>"+results.first_name+"</td>"
+"<td>"+results.last_name+"</td>"
+"<td>"+results.id+"</td>"
+"<td>"+results.email+"</td>"
+"<td>"+results.bentrust+"</td>"
+"</tr>" )
})
}
});
});
</script>
</head>
<body>
<table id="apiTable">
<thead>
<tr>
<th>Id</th>
<br>
<th>Email</th>
<br>
<th>Firstname</th>
<br>
<th>Lastname</th>
</tr>
</thead>
<tbody id="apiData"></tbody>
</body>
</html>
I'm developing an extension for Microsoft Edge and have learned from the docs here https://learn.microsoft.com/en-us/microsoft-edge/extensions/guides/creating-an-extension#writing-a-more-complex-extension that I can use Javascript for data manipulation.
For some reason though, when I try to modify a DOM element like this:
<!DOCTYPE html>
<html>
<body>
<p></p>
<script type='text/javascript'>
document.getElementsByTagName('P')[0].innerHTML = 'something';
</script>
</body>
</html>
I get the desired result in any HTML / JAVASCRIPT interpreter but when I try to test it out in the extension the DOM manipulation isn't working. The p element isn't populated with 'something'. The manifest.json file is included in the extension folder I'm just not including it here as it's not relevant to the question.
How should I go about this ?
Update:
window.html:
<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8'>
<link rel='stylesheet' href='window.css'>
</head>
<body>
<div><p></p></div>
<script src="window.js"></script>
</body>
</html>
window.js:
window.onload() {
document.getElementsByTagName('P')[0].innerHTML = 'hakuna matata';
};
You should import the JavaScript function using <script> tag like below:
In myfunction.js file of js folder:
document.getElementsByTagName('p')[0].innerHTML = 'something';
In html file:
<!DOCTYPE html>
<html>
<body>
<p></p>
<script src="js/myfunction.js"></script>
</body>
</html>
I tested it in Edge extension: If we use the JavaScript function directly in the html page then it doesn't work. If we use a link to the js file then it works.
I'm attempting to have my JavaScript code in a file apart from my HTML file.
Linking the 2 scripts between each other works, however stuff like the function document.getElementById() doesn't.
Anyone know how to fix this?
HTML code:
<!DOCTYPE HTML>
<html>
<head>
<title>Boost</title>
<script src="javascript.js"></script>
<link rel="stylesheet" type="text/css" href="styles.css"/>
</head>
<body>
<h3>
<p id="TopTextParagraph">Hi there</p>
<div>
<button id="clickNext">Next</button>
</div>
</h3>
</body>
</html>
JavaScript code:
document.getElementById("clickNext").onclick = goNext;
function goNext() {
console.log("stuff here")
}
JavaScript works when I put it in the HTML file using <script> </script>, just don't know how to make it work in a separate JavaScript file.
You are adding the script inside head tag. When that snippet is executed clickNext element does not exist in the dom
You can add the script near the closing body tag to resolve the problem & remove from the head tag
<body>
<h3>
<p id="TopTextParagraph"> Hi there</p>
<div>< button id="clickNext"> Next</button></div>
</h3>
<script src="javascript.js"></script>
</body>
I want to call a partial html page using jquery. I have seen this
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script type="text/javascript" src="lib/jquery-3.1.0.min.js"></script>
<script type="text/javascript"> $('#result').load('Ajax/test.html'); </script>
<title>Home</title>
</head>
<body>
<div id="result"></div>
</body>
</html>
and in the path Ajax/test.html i have this test.html:
<h1>Hey World</h1>
The problem is it does not load the Hey World into the main page. Also, there is no error in console.
What is the problem?
As with $('#result'), jQuery is unable to find the element as DOM is not ready hence jQueryObject.load method is never invoked.
Wrap your script in $(document).ready or Place your <script> as last-child of <body>(Just before closing body tag(</body>))
There are also DOMContentLoad or window.onload events which makes sure that DOM is loaded but IMO, placing <script> just before </body> is easier option.
<div id="result"></div>
<script>
$('#result').load('test.html');
</script>
You are trying to append to an element that yet does not exists.
Try adding your code in a $(document).ready(), and just before the </body> closing tag.
Like this:
<script>
$(document).ready(function(){
$('#result').load('Ajax/test.html');
});
</script>
</body>
Try changing your <script> tag to include a document.ready:
<script type="text/javascript">
$(document).ready(function () {
$('#result').load('Ajax/test.html');
});
</script>
I'm tring to use the command innerHTML to change the text of my HTML code. it works if I put it at the HTML file, but not if I put in an external one.
The one that works:
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<p id="Monkey">Monkey</p>
<script>
document.querySelector("#Monkey").innerHTML="NoMoreMonkeys";
</script>
</body>
</html
Output: NoMoreMonkeys
The one that doesn't:
<!DOCTYPE html>
<html>
<head>
<script src="hello.js"></script>
</head>
<body>
<p id="Monkey">Monkey</p>
</body>
</html>
File "hello.js" :
document.querySelector("#Monkey").innerHTML="NoMoreMonkeys";
Output: Monkey
Can someone help me?
You should include js before end of body,
because if js run before DOM ready, #Monkey did not exist.
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<p id="Monkey">Monkey</p>
<script src="hello.js"></script>
</body>
</html>
Or use jquery document ready:
$(document).ready(function() {
document.querySelector("#Monkey").innerHTML="NoMoreMonkeys";
});
The solution is to manipulate the page, when it is safe to do.
For that add jQuery to your page and let your JS code execute, when thh document is ready.
$( document ).ready(function() {
document.querySelector("#Monkey").innerHTML="NoMoreMonkeys";
});
or select element with jQuery as well:
$( document ).ready(function() {
$( "#Monkey" ).html("NoMoreMonkeys");
});