//String. The prototype using    

//Batch replacement, such as: STR. ReplaceAll ([/ a/g/b/g/c/g], [" aaa ", "BBB", "CCC"])    
String.prototype.ReplaceAll=function (A,B) {  
    var C=this;  
    for(var i=0;i<A.length;i++) {  
        C=C.replace(A[i],B[i]);  
    };  
    return C;  
};  

//Remove the white space character & NBSP; from both ends of the character;  
String.prototype.Trim=function () {  
    return this.replace(/(^[/t/n/r]*)|([/t/n/r]*$)/g,'');  
};  

//Remove the white space character & NBSP; to the left of the character;  
String.prototype.LTrim=function () {  
    return this.replace(/^[/t/n/r]/g,'');  
};  

//Remove the white space character & NBSP; to the right of the character;  
String.prototype.RTrim=function () {  
    return this.replace(/[/t/n/r]*$/g,'');  
};  

//Returns the length of the character, one Chinese for two & PI;  
String.prototype.ChineseLength=function()  
{   
    return this.replace(/[^/x00-/xff]/g,"**").length;  
};  

//Determines whether the string ends with the specified string & PI;  
String.prototype.EndsWith=function (A,B) {  
    var C=this.length;  
    var D=A.length;  
    if(D>C)return false;  
    if(B) {  
        var E=new RegExp(A+'$','i');  
        return E.test(this);  
    }else return (D==0||this.substr(C-D,D)==A);  
};  
//Determines whether a string begins with the specified string & PI;  
String.prototype.StartsWith = function(str)   
{  
    return this.substr(0, str.length) == str;  
};  
//Where the string begins and how long is the character & PI taken out;  
String.prototype.Remove=function (A,B) {  
    var s='';  
    if(A>0)s=this.substring(0,A);  
    if(A+B<this.length)s+=this.substring(A+B,this.length);  
    return s;  
};