Nodejs String Sub String from Left left(n)

Method Source Code

/**//from w w  w. j a v  a  2s.c  o  m
 * get a substring of a particular length from the left
 * 
 * @function external:String.prototype.left
 * @param {number}     n     The lenth of the string to return
 * @return {string}
 * @example
 *  'foobar'.left(3) === 'foo'
 */
String.prototype.left = function(n) {
   return this.substr(0,n);
};

Related

1. left(count)

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

2. left(count)

   String.prototype.left = function(count) {
       var result = "";
       var stringLength = this.length;
       if (count > stringLength) {
           count = stringLength;
       var i;
       for (i = 0; i < count; i += 1) {
           result += this[i];
   ...
   

3. left(count)

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

4. left(i)

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

5. left(n)

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

6. left(n)

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

7. left(num)

   String.prototype.left = function(num) {
     var result = '';
     for (var i = 0; i < num; i++) {
       result += this[i];
     };
     return result;