Nodejs Array Clear clear()

Method Source Code

/**/*from w  w w  .j ava  2 s .  co m*/
 *   Array extend functions.
 *   @version: 0.1b
 *   @Author: Alexey N Sindyashkin (lavarana8@gmail.com)
 *   @License: free for all.
*/
;(function(){

/**
 *   Clear array function. 
 *   If array have subarray or subobjects - then clear them.
*/
Array.prototype.clear = function() {
   for(var i=0,l=this.length;i<l;i++) {
      var r = this.pop();
      if(typeof(r)=='object')
         if(r.constructor.name=='Array')
            r = r.clear();
         else if('clear' in r) 
            r = r.clear();
         else 
            r = null;
   }
   return null;
}


/**
 *   Method 'Array.have'.
 *   Is element already in array. 
 *   @param ArrayElement
 *   @return True if element in array or False elswere
*/
Array.prototype.have = (Array.prototype.indexOf===undefined)?
   function (val) {var i=this.length;while(i--)if(this[i]===val)return true;return false}:
   function (val) {return this.indexOf(val)!=-1};


/**
 *   Method 'Array.indexOf'.
 *   return index of element in array
 *   @param ArrayElement
 *   @return Array index
*/
if(Array.prototype.indexOf===undefined)
   Array.prototype.indexOf=function(val){
      var i=this.length;
      while(i--)
         if(this[i]===val)
            return i;
      return false
   }

})(Array);

Related

1. clear()

   Array.prototype.clear = function() {
       while (this.length > 0) {
           this.pop();
   };
   

2. clear()

   Array.prototype.clear = function() {
     this.length = 0; 
   };
   

3. clear()

   var util = require('util');
   Array.prototype.clear = function () {
       while (this.length) {
           this.pop();
   };
   Object.mapObjectToArray = function (object) {
       var keyValuePair = [];
       Object.keys(object).map(function (key) {
   ...
   

4. clear()

   Array.prototype.clear=function(){
       this.length=0;
   

5. clear()

   Array.prototype.clear = function() {
       while(this[0]) {
           this.splice(0,1);
   function $(id) {
       return document.getElementById(id);
   Array.prototype.map_init = function() {
   ...
   

6. clear()

   Array.prototype.clear = function(){
       this.length = 0;
   };
   

7. clear()

   Array.prototype.clear=function(){
     this.length=0;
   

8. clear()

   Array.prototype.clear = function() {
     return this.splice(0,this.length);
   };
   

9. clear()

   Array.prototype.clear = Array.prototype.clear || function() {
       this.length = 0;
   };