Nodejs Array Where where(_cond)

Method Source Code

Array.prototype.where = function (_cond) {

    var items = []; 
    for (var l = 0; l < this.length; l++) {
        if (_cond(this[l])) {
            items.push(this[l]);/*w ww  .  j a v  a 2 s . com*/
        }
    }
    return items;
};

Related

1. where(argument)

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

2. 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;
   };
   

3. where(callback)

   Array.prototype.where = function(callback){
     if(!callback) return;
     for(var i = 0; i < this.length; i++){
       if(callback(this[i])){
         return this[i];
   

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;
   ...