如何用数字javascript替换字符

Question

i want to replace every Characters with number from 0 to 5 to make var string = "abcdef"; turn into "01245" i tried this code but result was not what i want

var text = "abcdef";
var num =0;
var tx;
var res;
for (var char in text) {
    tx = text[char];
    res= text.replace(tx,num);
    num = num+1;
    console.log(res);


}

Answer 1

You can use this

String.prototype.charNumReplace=function(){
    var newstr="";
    var self=this.toLowerCase();
    for(var i =0;i<self.length;i++){
        newstr+=self.charCodeAt(i)-97;
    }
    return newstr;
}