21⟩ How jQuery Works?
<html>
<head>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
// You can write the code here
</script>
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<body>
<a href="http://www.rendc.org/">Global GuideLine</a>
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JQuery Developer
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“JQuery Developer related Frequently Asked Questions by expert members with experience in JQuery Developer. These questions and answers will help you strengthen your technical skills, prepare for the new job test and quickly revise the concepts”
51 JQuery Developer Questions And Answers
22⟩ Do you have plans for a new jQuery plug-in or something else we should look out for? Where to from here for the imgPreview plugin?
I'm not sure, I'm largely unpredictable when it comes to jQuery; I'm still learning! If anyone has any requests feel free to forward me them! As for the imgPreview plugin I hope to keep it under constant development; any contributions or suggestions are welcomed!
23⟩ What are the advantages of jQuery?
The advantages of using jQuery are:
* JavaScript enhancement without the overhead of learning new syntax
* Ability to keep the code simple, clear, readable and reusable
* Eradication of the requirement of writing repetitious and complex loops and DOM scripting library calls.
24⟩ When you use jQuery?
JQuery can be used to:
★ apply CSS
★ call functions on events
★ traverse the documents
★ manipulation purpose and
★ to add effects too.
25⟩ Why jQuery better than JavaScript?
* jQuery is great library for developing ajax based application.
* It helps the programmers to keep code simple and concise and reusable.
* jQuery library simplifies the process of traversal of HTML DOM tree.
* jQuery can also handle events, perform animation, and add the Ajax support in web applications.
26⟩ Explain url paremeter of Jquery ajax method?
Specifies the URL to send the request to. Default is the current page.
27⟩ Explain Jquery $.ajax() method?
The Jquery ajax() method is used to perform an AJAX (asynchronous HTTP) request.
28⟩ How you print some thing on console using jquery?
var mydiv = $("#divid").html();
console.log(mydiv);
29⟩ How programmatically trigger a click event that's being handled by jQuery?
We can fire or trigger any click event programmatically by using below methods.
jQuery('#YourElementID').trigger('click');
OR
$('#YourElementID').trigger('click');
OR
jQuery("#YourElementID").click();
OR
$("#YourElementID").click();
30⟩ Explain type paremeter of Jquery ajax method?
Specifies the type of request. (GET or POST).
31⟩ What is use of noConflict() method in Jquery?
Please share your answers.
32⟩ Explain the paremeter of Jquery ajax method?
★ url
★ type
★ data
★ cache
★ beforeSend(xhr)
33⟩ Explain "beforeSend(xhr)" paremeter of Jquery ajax method?
A function to run before the request is sent.
34⟩ Explain cache paremeter of Jquery ajax method?
A Boolean value indicating whether the browser should cache the requested pages. Default is true.
35⟩ Explain data paremeter of Jquery ajax method?
Specifies data to be sent to the server.
36⟩ How to select combobox select value and text using Jquery?
Example:
var StateID = $("#StateCbx").val(); // Or you can use it $("#iStateID").val();
var StateName = $("#StateCbx option:selected").text();
alert("Selected combobox text is= " + StateName + " and value is= " + StateID);
37⟩ What is the use of jQuery.data()?
jQuery's data method gives us the ability to associate arbitrary data with DOM nodes and JavaScript objects. This makes our code more concise and clean.
38⟩ Can we call C# codebehind method using Jquery?
Yes.
39⟩ What is the use of jquery .each() function?
Basically, the jQuery .each() function is used to loop through each element of the target jQuery object. Very useful for multi element DOM manipulation, looping arrays and object properties.
Example:
In this example alert box will open 3 times because dom contain 3 <li> tags
<script>
$(document).ready(function(){
$("button").click(function(){
$("li").each(function(){
alert($(this).text())
});
});
});
</script>
<ul>
<li>Coffee</li>
<li>Milk</li>
<li>Soda</li>
</ul>
40⟩ What is the use of .Size() method in Jquery?
Jquery's .size() method returns number of element in the object. That means that you can count the number of elements within an object.
