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This free HTML JavaScript tutorial provides 45+ JavaScript/jQuery tips and tricks that help you work in JavaScript tasks better, through live HTML JavaScript example codes. List of some JavaScript tips and tricks:

- Refreshing the src of an image with jQuery?
- Check if an image is loaded or not with jQuery
- Remove selected text after mouse double click JavaScript event
- Validate an email address
- Check if an HTML control element exists
- Cancel an AJAX request
- Select all HTML checkboxes
- Selecting root element of a certain level in the document
- Searching a string in jQuery

Please go to the full post page for full detailed tips and HTML JavaScript example codes, then try some JavaScript tutorials:

- 10 Small Javascript Tricks You Should Master
- Some Basic Tips and Tricks for Speeding Up JavaScript
- 10 jQuery and JavaScript Tips and Tricks to Improve Your Code
- 5 Good and Small JavaScript Tips and Tricks

Label: JavaScript event, HTML control, HTML JavaScript example code, 45

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Select all elements except the ones with a given class

1.$('* :not(.someclass)')

Add a row to a table

1.$('#myTable tr:last').after('<tr>...</tr>');

How to convert decimal to hexadecimal?

num = num.toString(16);
reverse process:
num = parseInt(num, 16);

Filtering By More Than One Attribute in JQuery

1.var elements = $('#someid input[type=sometype][value=somevalue]').get();

How to expire a cookie in x minutes

var date = new Date();
date.setTime(date.getTime() + (x * 60 * 1000));
$.cookie('example', 'foo', { expires: date });

Selecting the first x items with jQuery

example: first 10 anchors
$('a').slice(0,10);
//or
$('a:lt(10)');

Working with a select element

//Get the value of a selected option
$('selectElement').val();
 
//Get the text of a selected option
$('#selectElementId :selected').text();
 
//Remove an option (e.g. id=1)
$("#selectElementId option[value='1']").remove();

How to get client ip address with jQuery

$.getJSON("http://jsonip.appspot.com?callback=?",function(data){
    alert( "Your ip: " + data.ip);
});

How to parse XML with jQuery

file.xml:

<?xml version="1.0" ?>
<result>
    <item>
        <id>1</id>
        <title>title1</title>
        <description>desc1</description>
    </item>
    <item>
        <id>2</id>
        <title>title2</title>
        <description>desc2</description>
    </item>
    <!-- ... -->
</result>

$.get('file.xml',{},function(data){
    $('item',data).each(function(){
        var $this       = $(this);
        var id             = $this.find('id').text();
        var title         = $this.find('title').text();
        var description = $this.find('description').text();
        //do something ...
    });
});

How to get the number in the ids

<div id="sites">
    <a id="site_1" href="http://siteA.com">siteA</a>
    <a id="site_2" href="http://siteB.com">siteB</a>
    <a id="site_3" href="http://siteB.com">siteC</a>
    ...
</div>

you need to get 1 from site_1, 2 from site_2 ...

$("#sites a").click(function(){
    var $this     = $(this);
    var nmb     = $this.attr('id').match(/site_(\d+)/)[1];
    ...
});

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Efficient and Helpful JavaScript/jQuery Tips and Tricks - Page 4/fr//en//fr//vi//vi//vi//en/

0/5 0 votes / 114,608 previews / 1 comment 11/10/2010 This free HTML JavaScript tutorial provides 45+ JavaScript/jQuery tips and tricks that help you work in JavaScript tasks...Efficient and Helpful JavaScript/jQuery Tips and Tricks - Efficient and Helpful JavaScript/jQuery Tips and Tricks

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