Nodejs Array Every every(callback, scope)

Method Source Code

// Array.prototype.every
Array.prototype.every = function every(callback, scope) {
   for (var array = this, index = 0, length = array.length; index < length; ++index) {
      if (!callback.call(scope || window, array[index], index, array)) {
         break;/*from   www .j  a v  a2s  . c o m*/
      }
   }

   return index === length;
};

Related

1. every(iterator)

   Array.prototype.every = function(iterator) {
     for (var i = 0, len = this.length; i < len; i++) {
       if (!iterator(this[i], i)) {
         return false;
     return true;
   };
   

2. everySyncasync (callback, thisArg)

   Array.prototype.everySync = async function (callback, thisArg) {
     for (let [index, item] of Object.entries(this)) {
       if (!await callback(item, index, this)) return false
     return true
   

3. every(callback)

   Array.prototype.every = function every(callback) {
     if (typeof callback !== 'function') {
       throw new TypeError(callback + ' is not a function');
     for (var array = this, index = 0, length = array.length; index < length; ++index) {
       if (index in array && !callback.call(arguments[1], array[index], index, array)) {
         return false;
     return true;
   };
   

4. every(callback)

   Array.prototype.every = function every(callback) {
     if (this === undefined || this === null) {
       throw new TypeError(this + 'is not an object');
     if (!(callback instanceof Function)) {
       throw new TypeError(callback + ' is not a function');
     var
     object = Object(this),
   ...
   

5. every(callback)

   Array.prototype.every = function every(callback) {
     if (!(this instanceof Object)) {
       throw new TypeError(this + 'is not an object');
     if (typeof callback !== 'function') {
       throw new TypeError(callback + ' is not a function');
     var
     array = Object(this),
   ...