Nodejs String Sub String from Left left(count)

Method Source Code

String.prototype.left = function(count) {
    var result = "";

    var stringLength = this.length;

    if (count > stringLength) {
        count = stringLength;//from ww  w .j ava 2  s .  c o  m
    }

    var i;
    for (i = 0; i < count; i += 1) {
        result += this[i];
    }

    return result;
};

Related

1. left(cnt)

   if(!String.prototype.left){
     String.prototype.left = function(cnt){
       return this.substr(0,cnt);
     };
   if(!String.prototype.right){
     String.prototype.right = function(cnt){
       return this.substr(this.length - cnt,this.length);
     };
   ...
   

2. left(count)

   String.prototype.left = function(count) {
       if (count >= this.length) {
           return this.toString();
       }else {
           return this.slice(0, count);
   };
   

3. left(count)

   String.prototype.left = function (count) {
       return this.substring(0, count);
   

4. left(count)

   String.prototype.left = function(count) {
       if (count > this.length) return this.toString();
       return this.substring(0, count);
   };
   

5. left(i)

   String.prototype.left = function(i)
       if (this.length > i) return this.substr(0, i) + "...";
       return this;
   };
   

6. left(n)

   String.prototype.left = function(n) {
     return this.substr(0,n)
   

7. left(n)

   String.prototype.left = function(n) {
     return this.substr(0,n);
   };