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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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Moving options from list A to list B

$().ready(function() {
    $('#add').click(function() {
        !$('#select1 option:selected').appendTo('#select2');
    });
    $('#remove').click(function() {
        !$('#select2 option:selected').appendTo('#select1');
    });
});

Select all checkboxes

$(document).ready(function(){
    $("#checkboxall").change(function(){
        var checked_status = this.checked;
        $("input[name=checkall]").attr("checked", checked_status);
    });
 
});

Get the current URL

$(document).ready(function() {
    var pathname = window.location.pathname;
});

Check if and which key was pressed

$(function() {
    $(document).keypress(function(e){
        switch(e.which){
        // "ENTER"
        case 13:
        alert('enter pressed');
        break;
 
        // "s"
        case 115:
        alert('s pressed');
        break;
 
        (...)
 
        }
    });
 
});

How to hide all children div except a specific one with jQuery?

$('#target div:not(#exclude)').hide();
//or
$('#target').children().filter(':not(#exclude)').hide();

Detecting when a div's height changes using jQuery

$('element').bind('resize', function(){
alert( 'Height changed to' + $(this).height() );
}

Delete all table rows except first

1.$('someTableSelector').find('tr:gt(0)').remove();

Selecting root element of a certain level in the document

1 level:
$('*:not(* *)');
2 level:
$('*:not(* *)').find('> *');
3 level:
$('*:not(* *)').find('> * > *');

Searching a string in jQuery

1.var foundin = $('*:contains("some string bla bla")');

Get the distance scrolled from top

1.alert($(document).scrollTop());

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Efficient and Helpful JavaScript/jQuery Tips and Tricks - Page 3/fr//en//fr//fr//en//vi//vi//vi//en//fr/ - Language: English

0/5 0 votes / 114,133 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 - Language: English

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