google+javascriptbanktwitter@js_bankfacebook@jsbankrss@jsbank
Guest, register






Efficient and Helpful JavaScript/jQuery Tips and Tricks 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

Free iPage Web Hosting for First Year NOW



If you're still looking for a reliable web host provider with affordable rates, why you don't take a little of time to try iPage, only with $1.89/month, included $500+ Free Extra Credits for the payment of 24 months ($45)?

Over 1,000,000+ existisng customers can not be wrong, definitely you're not, too! More important, when you register the web hosting at iPage through our link, we're going to be happy for resending a full refund to you. That's awesome! You should try iPage web hosting for FREE now! And contact us for anything you need to know about iPage.
Try iPage for FREE First Year NOW

  • How to refresh the src of an image with jQuery?
  • 1.$(imageobj).attr('src', $(imageobj)
    2.           .attr('src') + '?' + Math.random() );
  • How to see if an image is loaded or not with jquery
  • 1.var imgsrc = 'img/image1.png';
    2.$('<img/>').load(function () {
    3.    alert('image loaded');
    4.}).error(function () {
    5.    alert('error loading image');
    6.}).attr('src', imgsrc);
  • And if a set (example : 10 images) of images are loaded
  • 1.var totalimages  = 10;
    2.var loadedimages = 0;
    3.$("<img/>").load(function() {
    4.    ++loadedimages;
    5.    if(loadedimages == totalimages){
    6.        //All 10 images are loaded
    7.    }
    8.});
  • How to remove selected text after mouse double click event
  • 01.clearSelection      : function () {
    02.    if(document.selection && document.selection.empty) {
    03.        document.selection.empty();
    04.    } else if(window.getSelection) {
    05.        var sel = window.getSelection();
    06.        sel.removeAllRanges();
    07.    }
    08.}
    09.$(element).bind('dblclick',function(event){
    10.    //do something
    11.    clearSelection();
    12.});
  • Validate email address:
  • 1.var email = 'info@tympanus.net'
    2.if(!(/^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i.test(email)))
    3.alert('Invalid Email');
  • How to order a <ul> element using jQuery
  • 01.<ul>
    02.<li>cloud</li>
    03.<li>sun</li>
    04.<li>rain</li>
    05.<li>snow</li>
    06.</ul
    07. 
    08.var items = $('.to_order li').get();
    09.items.sort(function(a,b){
    10.    var keyA = $(a).text();
    11.    var keyB = $(b).text();
    12. 
    13.    if (keyA < keyB) return -1;
    14.    if (keyA > keyB) return 1;
    15.    return 0;
    16.});
    17.var ul = $('.to_order');
    18.$.each(items, function(i, li){
    19.    ul.append(li);
    20.});
  • Passing parameters to a function called with setTimeout
  • 1.timeout = setTimeout(function(){myFunction(param)},time);
  • Disable right mouse click
  • 1.$(document).ready(function(){
    2.    $(document).bind("contextmenu",function(e){
    3.        return false;
    4.    });
    5.});
  • Fade out an image, and fade in another one (replacing the previous one)
  • 1.$('imageelement').fadeOut(function() {
    2.    $(this).load(function() {
    3.        $(this).fadeIn();
    4.    }).attr('src', AnotherSource);
    5.});
  • Write your own selectors
  • 01.//extend the jQuery functionality
    02.$.extend($.expr[':'], {
    03. 
    04.    //name of your special selector
    05.    moreThanAThousand : function (a){
    06.        //Matching element
    07.        return parseInt($(a).html()) > 1000;
    08.    }
    09.});
    10. 
    11.$(document).ready(function() {
    12.    $('td:moreThanAThousand').css('background-color', '#ff0000');
    13.});

    JavaScript by day


    Google Safe Browsing McAfee SiteAdvisor Norton SafeWeb Dr.Web