jquery小技巧

1. 禁止右键点击

$(document).ready(function(){
    $(document).bind("contextmenu",function(e){
        return false;
    });
});

2.隐藏搜索文本框文字

$(document).ready(function() {
$("input.text1").val("Enter your search text here");
   textFill($('input.text1'));
});
    function textFill(input){ //input focus text function
     var originalvalue = input.val();
     input.focus( function(){
          if( $.trim(input.val()) == originalvalue ){ input.val(''); }
     });
     input.blur( function(){
          if( $.trim(input.val()) == '' ){ input.val(originalvalue); }
     });
}
3. 在新窗口中打开链接

$(document).ready(function() {
   //Example 1: Every link will open in a new window
   $('a[href^="http://"]').attr("target", "_blank");

   //Example 2: Links with the rel="external" attribute will only open in a new window
   $('a[@rel$='external']').click(function(){
      this.target = "_blank";
   });
});
// how to use
<a href="http://www.opensourcehunter.com" rel=external>open link</a>


4.检测浏览器
$(document).ready(function() {
// Target Firefox 2 and above
if ($.browser.mozilla && $.browser.version >= "1.8" ){
    // do something
}
// Target Safari
if( $.browser.safari ){
    // do something
}
// Target Chrome
if( $.browser.chrome){
    // do something
}
// Target Camino
if( $.browser.camino){
    // do something
}
// Target Opera
if( $.browser.opera){
    // do something
}

// Target IE6 and below
if ($.browser.msie && $.browser.version <= 6 ){
    // do something
}
// Target anything above IE6
if ($.browser.msie && $.browser.version > 6){
    // do something
}
});
5. 预加载图片
$(document).ready(function() {
jQuery.preloadImages = function()
{
  for(var i = 0; i<ARGUMENTS.LENGTH; jQuery(?<img { i++)>").attr("src", arguments[i]);
  }
}
// how to use
$.preloadImages("image1.jpg");
});