Nodejs String Padding Left padLeft(padString,length)

Method Source Code

String.prototype.padLeft = function(padString,length){

    var str = this;
    while (str.length < length)
        str = padString + str;//www. java2 s  . c om
    return str;

}

Related

1. padLeft(length, char)

   String.prototype.padLeft = function(length, char) {
     return Array(length - this.length + 1).join(char || " ") + this;
   };
   

2. padLeft(max, c)

   if (!String.prototype.padLeft) {
     String.prototype.padLeft = function(max, c) {
       var self = this;
       return new Array(Math.max(0, max - self.length + 1)).join(c || ' ') + self;
     };
   

3. padLeft(n, ch)

   String.prototype.padLeft = function(n, ch){
       var s = this;
       while(s.length < n){
           s = ch + s;
       return s;
   

4. padLeft(n, str)

   String.prototype.padLeft = function(n, str) {
     return Array(n - String(this).length + 1).join(str || '0') + this;
   

5. padLeft(pad, len)

   String.prototype.padLeft = function (pad, len)
     if (typeof(len) == "undefined") { var len = 0; }
     if (typeof(pad) == "undefined") { var pad = ' '; }
     if (len + 1 >= this.length)
         str = Array(len + 1 - this.length).join(pad) + this;
       return str;
   ...
   

6. padLeft(paddingValue)

   String.prototype.padLeft = function (paddingValue) {
     return String(paddingValue + this).slice(-paddingValue.length);
   };
   

7. padLeft(size, char)

   String.prototype.padLeft = function (size, char) {
       if (size === 0) {
           return '';
       return (Array(size + 1).join(char) + this).slice(-size);
   };
   

8. padLeft(size, prefix)

   (function(){
   String.prototype.padLeft = function(size, prefix) {
       prefix = prefix || " ";
       var s = ''+this;
       while (s.length < size) s = prefix + s;
       return s;
   };
   Math.randInt = function(min, max){
     return Math.floor(Math.random() * (max - min + 1)) + min;
   ...
   

9. padLeft(totalLength, value)

   String.prototype.padLeft = function (totalLength, value) {
     if (this.length >= totalLength)
       return this;
     var str = this;
     while (str.length < totalLength)
       str = value + str;
     return str;
   };