Nodejs Array Where where(callback)

Method Source Code

Array.prototype.where = function(callback){
   if(!callback) return;
   for(var i = 0; i < this.length; i++){
      if(callback(this[i])){
         return this[i];
      }/*from ww w  .j  a  v a  2 s . com*/
   }
}

Related

1. where(_cond)

   Array.prototype.where = function (_cond) {
       var items = []; 
       for (var l = 0; l < this.length; l++) {
           if (_cond(this[l])) {
               items.push(this[l]);
       return items;
   };
   ...
   

2. where(argument)

   Array.prototype.where = function(argument) {
     return this.filter(item => argument(item));  
   };
   

3. where(attribut, value)

   Array.prototype.where = function (attribut, value) {
       var res = [];
       for (var i = 0; i < this.length; i++) {
           if (this[i][attribut] == value)
               res.push(this.slice(i, i + 1));
       return res;
   };
   

4. where(exp)

   Array.prototype.where = function(exp){
       var exp = new Function("$", "return " + exp);
       var arr=[];
       for(var i=0; i<=this.length-1; i++){
           if(exp(this[i])){
               arr.push(this[i])
       return arr;
   ...
   

5. where(f)

   Array.prototype.where = function(f){
      var fn = f;
      if(typeof f == 'string'){
         if((fn=lambda(fn)) == null){
            throw "Syntax error in lambda string: "+ f;
   };
   

6. where(f)

   Array.prototype.where = function(f){
       var newArray = [];
       for(var i = 0; i < this.length; i++){
           if(f(this[i])){
               newArray.push(this[i]);
       return newArray;
   };
   ...
   

7. where(func)

   Array.prototype.where = function(func) {
     var result = [];
     for (var i = 0; i < this.length; i++)
       if (func(this[i]))
         result.push(this[i]);
     return result;
   };