1. 禁用右键点击(Disable right-click)
  $(document).bind("contextmenu",function(e){  
      return false;  
  });  
});```


2. 禁用搜索文本框






  ```$(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. 新窗口打开链接




```$(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  
[open link](http://www.opensourcehunter.com)  
  1. 检测浏览器
// 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(Preloading images)


```$(document).ready(function() {  
jQuery.preloadImages = function()  
{  
for(var i = 0; i<arguments.length; i++)="" {="" jquery("<img="">").attr("src", arguments[i]);  
}  
}  
// how to use  
$.preloadImages("image1.jpg");  
});  
  1. 样式筛选(CSS Style switcher)
  $("a.Styleswitcher").click(function() {  
      //swicth the LINK REL attribute with the value in A REL attribute  
      $('link[rel=stylesheet]').attr('href' , $(this).attr('rel'));  
  });  
// how to use  
// place this in your header  

// the links  
[Default Theme](#)  
[Red Theme](#)  
[Blue Theme](#)  
});```




7. 列高度相同



  
    
      
        ```$(document).ready(function() {  
function equalHeight(group) {  
  tallest = 0;  
  group.each(function() {  
      thisHeight = $(this).height();  
      if(thisHeight > tallest) {  
          tallest = thisHeight;  
      }  
  });  
  group.height(tallest);  
}  
// how to use  
$(document).ready(function() {  
  equalHeight($(".left"));  
  equalHeight($(".right"));  
});  
});  
  1. 字体大小调整(Font resizing)
// Reset the font size(back to default)  
var originalFontSize = $('html').css('font-size');  
  $(".resetFont").click(function(){  
  $('html').css('font-size', originalFontSize);  
});  
// Increase the font size(bigger font0  
$(".increaseFont").click(function(){  
  var currentFontSize = $('html').css('font-size');  
  var currentFontSizeNum = parseFloat(currentFontSize, 10);  
  var newFontSize = currentFontSizeNum*1.2;  
  $('html').css('font-size', newFontSize);  
  return false;  
});  
// Decrease the font size(smaller font)  
$(".decreaseFont").click(function(){  
  var currentFontSize = $('html').css('font-size');  
  var currentFontSizeNum = parseFloat(currentFontSize, 10);  
  var newFontSize = currentFontSizeNum*0.8;  
  $('html').css('font-size', newFontSize);  
  return false;  
});  
});  
  1. 返回页面顶部(Smooth(animated) page scroll)

       ```$(document).ready(function() {  
    

$(‘a[href*=#]').click(function() {
if (location.pathname.replace(/^//,'') == this.pathname.replace(/^//,'')
&& location.hostname == this.hostname) {
var $target = $(this.hash);
$target = $target.length && $target
|| $('[name=’ + this.hash.slice(1) +']');
if ($target.length) {
var targetOffset = $target.offset().top;
$(‘html,body’)
.animate({scrollTop: targetOffset}, 900);
return false;
}
}
});
// how to use
// place this where you want to scroll to

// the link
go to top
});

        
      
    
  


11. 获取鼠标的xy坐标(Get the mouse cursor x and y axis)


$(document).ready(function() {
$().mousemove(function(e){
//display the x and y axis values inside the div with the id XY
$('#XY').html(“X Axis : " + e.pageX + " | Y Axis " + e.pageY);
});
// how to use

  
  
  
  
  <p>
    });
  </p>


12. 验证元素是否为空(Verify if an Element is empty)


  ```$(document).ready(function() {  
  if ($('#id').html()) {  
   // do something  
   }  
});  
  1. 替换元素(Replace a element)
 $('#id').replaceWith('```


  I have been replaced


<p>
  &#8216;); });
</p>


14. 延迟加载(jQuery timer callback functions)



  ```$(document).ready(function() {  
 window.setTimeout(function() {  
   // do something  
 }, 1000);  
});```





15. 移除单词(Remove a word)



  ```$(document).ready(function() {  
 var el = $('#id');  
 el.html(el.html().replace(/word/ig, ""));  
});```


<p>
  
</p>




16. 验证元素是否存在(Verify that an element exists in jQuery)


```$(document).ready(function() {  
 if ($('#id').length) {  
// do something  
}  
});  
  1. 使整个DIV可点击(Make the entire DIV clickable)
  $("div").click(function(){  
    //get the url from href attribute and launch the url  
    window.location=$(this).find("a").attr("href"); return false;  
  });  
// how to use```


  [home](index.html)


<p>
  });
</p>


18. id和class切换(Switch between classes or id’s when resizing the window)


```$(document).ready(function() {  
 function checkWindowSize() {  
  if ( $(window).width() > 1200 ) {  
      $('body').addClass('large');  
  }  
  else {  
      $('body').removeClass('large');  
  }  
 }  
$(window).resize(checkWindowSize);  
});  
      ```$(document).ready(function() {  

var cloned = $('#id').clone();
// how to use

          
          
          
          
          <p>
            });
          </p>
        
      
    
  


20. 使元素居中屏幕(Center an element on the screen)


  ```$(document).ready(function() {  
  jQuery.fn.center = function () {  
      this.css("position","absolute");  
      this.css("top", ( $(window).height() - this.height() ) / 2+$(window).scrollTop() + "px");  
      this.css("left", ( $(window).width() - this.width() ) / 2+$(window).scrollLeft() + "px");  
      return this;  
  }  
  $("#id").center();  
});```


21. 自定义选择器(Write our own selector)


  ```$(document).ready(function() {  
   $.extend($.expr[':'], {  
       moreThen1000px: function(a) {  
           return $(a).width() > 1000;  
      }  
   });  
  $('.box:moreThen1000px').click(function() {  
      // creating a simple js alert box  
      alert('The element that you have clicked is over 1000 pixels wide');  
  });  
});  
  1. 统计元素个数(Count a element)

      ```$(document).ready(function() {  
    

$(“p”).size();
});```

  1. 自定义Bullets(Use Your Own Bullets)

      ```$(document).ready(function() {  
    

$(“ul”).addClass(“Replaced”);
$(“ul > li”).prepend("‒ “);
// how to use
ul.Replaced { list-style : none; }
});```

  1. 引用google分发的jQuery(Let Google host jQuery for you)

//Example 1// Example 2:(the best and fastest way)

  1. 禁用jQuery动画(Disable jQuery animations)
  jQuery.fx.off = true;  
});```




26. 防止不兼容冲突(No conflict-mode)






```$(document).ready(function() {  
 var $jq = jQuery.noConflict();  
 $jq('#id').show();  
});  

jquery 速查表:

原贴地址:http://blog.csdn.net/sunboy_2050/article/details/8179162