javascript prototype

String.prototype.trim = function() {  
    return this.replace(/^s+|s+$/g,"");  
}  
String.prototype.ltrim = function() {  
    return this.replace(/^s+/,"");  
}  
String.prototype.rtrim = function() {  
    return this.replace(/s+$/,"");  
}  

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Prototype.js中bind方法的源码

Function.prototype.bind = function(){
  var fn = this, args = Array.prototype.slice.call(arguments), object = args.shift();
  return function(){
    return fn.apply(object,
      args.concat(Array.prototype.slice.call(arguments)));
  };
};

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AJAX前进后退按钮失效，及刷新问题的解决方案

function hashChange(){
    var m=window.location.hash.split('#');
    m=m[1]?m[1].split('=')[1]:0;//获取到锚点的参数值
    if(m){
        $.post(App_path,{type:type},function(){//将锚点参数提交到后台处理，返回所需信息
            //do some thing here
        })
    }
}
$(window).hashchange(function(){
    hashChange();
})