Nodejs Array Some some(fn , context)

Method Source Code

Array.prototype.some = function(fn , context) {
  if (typeof fn != "function") {
    throw new TypeError(fn + " is not a function");
  }//from  w w  w.  j a v  a 2s  .com

  if (typeof context === 'undefined') {
    context = this;
  }

  for (var i = 0, l = this.length; i < l; i++) {
    if (this.hasOwnProperty(i) && fn.call(context, this[i], i, this)) {
      return true;
    }
  }

  return false;
}

Related

1. some(a,b)

   Array.prototype.some=function(a,b){
     "use strict";
     var c,d,e;
     if(void 0===this||null===this)
        throw new TypeError;
     if(e=Object(this),d=e.length>>>0,"function"!=typeof a)
       throw new TypeError;
     for(b=arguments.length>=2?arguments[1]:void 0,c=0;d>c;){
       if(c in e&&a.call(b,e[c],c,e))
   ...
   

2. some(fun /*, thisArg */)

   Array.prototype.some = Array.prototype.some || function(fun ) {
       'use strict';
       if (this === void 0 || this === null)
           throw new TypeError();
       var t = Object(this);
       var len = t.length >>> 0;
       if (typeof fun !== 'function')
           throw new TypeError();
       var thisArg = arguments.length >= 2 ? arguments[1] : void 0;
   ...
   

3. some(fun /*, thisp*/)

   Array.prototype.some = function(fun ) {
       var len = this.length;
       if (typeof fun != "function") {
           throw new TypeError();
       var thisp = arguments[1];
       for (var i = 0; i < len; i++) {
       if (i in this && fun.call(thisp, this[i], i, this))
           return true;
   ...
   

4. some(fun /*, thisp*/)

   Array.prototype.some = Array.prototype.some || function(fun ) {
       var i = 0,
           len = this.length >>> 0;
       if (typeof fun != "function") {
           throw new TypeError();
       var thisp = arguments[1];
       for (; i < len; i++) {
           if (i in this &&
   ...
   

5. some(fun, thisArg)

   Array.prototype.some = function(fun, thisArg) {
     "use strict";
     var i, len, t;
     if (this === void 0 || this === null) {
       throw new TypeError();
     t = Object(this);
     len = t.length >>> 0;
     if (typeof fun !== "function") {
   ...