Nodejs Array Each each(cb)

Method Source Code

Array.prototype.each = function(cb) {
    for (var i = 0; i < this.length; i += 1) {
        cb(this[i], i)//from   w  ww.ja v  a 2 s  .c o m
    }
};

function stringify(arr) {
    var ret = [];
    arr.each(function(el) {
        console.log(el);
        var current = '[' + el[0] + ', ';
        if (typeof el[1] === 'object') {
            current += stringify(el[1]);
        } else {
            current += el[1];
        }
        current += ']';
        ret.push(current);
    });
    return '[' + ret.join(', ') + ']';
}

function toPairs(obj) {
    var arrs = [];
    for (var p in obj) {
        if (typeof obj[p] === 'object') {
            // toPairs(obj[p]);
            arrs.push([p, toPairs(obj[p])]);
        } else {
            arrs.push([p, obj[p]]);
        }
    }
    return stringify(arrs);
};

toPairs({
    a: {
        b: 'c'
    }
});

Related

1. each(callback)

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

2. each(callback)

   Array.prototype.each = function(callback) {
       for (var i = 0 ; i < this.length ; i++ )
           callback(this[i]);
   Array.prototype.lastElement = function() {
       return (this.length === 0) ? undefined : this[this.length - 1];
   Array.prototype.verify = function(callback){ 
       var newArray = [];
   ...
   

3. each(callback)

   Array.prototype.each = function(callback) {
     for ( var i = 0; i < this.length; i++ ){
       if (callback(this[i], i, this) !== undefined) return;
   };
   Array.prototype.each = function(callback) {
     return this.some(callback);
   };
   

4. each(callback)

   Array.prototype.each = function (callback) {
     for(var i=0; i<this.length; i++){
       if ( callback(this[i]) == false ){
         break;
     return this;
   };
   

5. each(cb)

   Array.prototype.each = function(cb) {
     for (var i = 0; i < this.length; i++) {
       cb(this[i])
   

6. each(cb, ctx)

   Array.prototype.each = function(cb, ctx) {
     for (var i = 0, l = this.length; i < l; i++) {
       if (cb.call((ctx === undefined) ? this[i] : ctx, i, this[i]) === false) {
         break;
   };
   

7. each(command)

   "use strict";
   Array.prototype.each = function(command){
     for(var i = 0; i < this.length; i++){
       command(this[i]);
     return this;
   };
   

8. each(f)

   Array.prototype.each= function(f) {
     i= -1;
     while(++i < this.length) 
       f(this[i]);
   };
   

9. each(f)

   Array.prototype.each = function(f) {
     for (var i=0; i<this.length; i++) {
       f(this[i])