Nodejs Array Contain contains(obj)

Method Source Code

/**/*from w  w  w .  ja va  2 s . c om*/
 * Determines whether an array contains the specified object.
 * @param obj The object that might be in the array (the needle).
 * @returns {boolean} True if the object is in the array; false otherwise.
 */
Array.prototype.contains = function(obj) {
    var i = this.length;
    while (i--) {
        if (this[i] === obj) {
            return true;
        }
    }
    return false;
};

Related

1. contains(obj)

   Array.prototype.contains = function(obj){
     return this.indexOf(obj)>-1;
   };
   

2. contains(obj)

   Array.prototype.contains = function(obj) {
       var i = this.length;
       while (i--) {
           if (this[i] === obj) {
               return true;
       return false;
   };
   ...
   

3. contains(obj)

   Array.prototype.contains = function (obj) {
       return this.indexOf(obj) >= 0;
   };
   

4. contains(obj)

   Array.prototype.contains = function(obj) {
       var i = this.length;
       while (i--) {
           if (this[i] == obj) {
               return true;
       return false;
   

5. contains(obj)

   Array.prototype.contains = function (obj) {
       var i = this.length;
       while (i--) {
           if (this[i] === obj) {
               return true;
       return false;
   

6. contains(obj)

   Array.prototype.contains=function(obj) {
       var index=this.length;
       while (index--){
           if(this[index]===obj){
               return true;
       return false;
   

7. contains(obj)

   Array.prototype.contains = function(obj) {
       var i = this.length;
       while (i--) {
           if (this[i] === obj) {
               return true;
       return false;
   if (!String.prototype.startsWith) {
     String.prototype.startsWith = function(searchString, position) {
       position = position || 0;
       return this.indexOf(searchString, position) === position;
     };
   String.prototype.arrayfy = function(n) {
     arr = this.split(' ');
     return arr.slice(0,n);
   window.required = [];
   window.require = function(script, callback) {
     if(!required.contains(script))
       $.get(script + ".js", function(data){
         required.push(script);
         eval(data);
         if(callback != null)
           callback();
       });
   

8. contains(obj)

   Array.prototype.contains = function(obj) {
     var i = this.length;
     while (i--) {
       if (this[i] === obj) {
         return true;
     return false;
   if (!Array.prototype.indexOf)
     Array.prototype.indexOf = function(elt )
       var len = this.length;
       var from = Number(arguments[1]) || 0;
       from = (from < 0)
            ? Math.ceil(from)
            : Math.floor(from);
       if (from < 0)
         from += len;
       for (; from < len; from++)
         if (from in this &&
             this[from] === elt)
           return from;
       return -1;
     };
   

9. contains(obj)

   Array.prototype.contains = function(obj) {
       var i = this.length;
       while (i--) {
           if (this[i] === obj) {
               return true;
       return false;