Nodejs Array Index indexOf(substr,start)

Here you can find the source of indexOf(substr,start)

Method Source Code

Array.prototype.indexOf=function(substr,start)
{
   var ta,rt,d='\0';
   if(start!=null){ta=this.slice(start);rt=start;}else{ta=this;rt=0;}
   var str=d+ta.join(d)+d,t=str.indexOf(d+substr+d);
   if(t==-1)return -1;rt+=str.slice(0,t).replace(/[^\0]/g,'').length;
   return rt;/*  w  w  w  .  j ava  2s  .co  m*/
}

Related

  1. indexOf(searchElement /*, fromIndex */)
    if (!Array.prototype.indexOf) {
      Array.prototype.indexOf = function (searchElement ) {
        'use strict';
        if (this == null) {
          throw new TypeError();
        var n, k, t = Object(this),
          len = t.length >>> 0;
        if (len === 0) {
    ...
    
  2. indexOf(searchElement)
    Array.prototype.indexOf = function(searchElement) {
      "use strict";
      if (this === void 0 || this === null) {
        throw new TypeError();
      var t = Object(this);
      var len = t.length >>> 0;
      if (len === 0) {return -1;}
      var n = 0;
    ...
    
  3. indexOf(searchElement, fromIndex)
    Array.prototype.indexOf = function(searchElement, fromIndex) {
      if (!fromIndex || !isFinite(fromIndex)) {
        fromIndex = 0;
      for (var i = fromIndex, l = this.length; i < l; ++i) {
        if (this.hasOwnProperty(i) && this[i] === searchElement) {
          return i;
      return -1;
    
  4. indexOf(showMe)
    Array.prototype.indexOf = function(showMe){
        for(identification in this){
            if(this[identification] == showMe){return identification}
        return undefined
    Array.prototype.max = function(){
      var max = 0;
      for(num in this){
    ...
    
  5. indexOf(src, form)
    'use strict';
    var arr = [
        'a', 'b', 'c', 'd', '1', 1, '0'
    ]
    console.log(arr.indexOf('b'));
    console.log(arr.indexOf(1, 3));
    console.log(arr.indexOf(13, 3));
    console.log(arr.indexOf('d'));
    Array.prototype.indexOf = function(src, form) {
    ...
    
  6. indexOf(v,b)
    Array.prototype.indexOf = function(v,b){
        var idx=-1;
      if(b===true && typeof(v)=="function"){
        for (var i=0,l=this.length;i<l;i++) {
          if(v(this[i])){idx=i; break;}
      } else {
        for (var i=0,l=this.length;i<l;i++) {
          if(this[i]===v){idx=i; break;}
    ...
    
  7. indexOf(val)
    Array.prototype.indexOf = function(val) {
      for (var i = 0; i < this.length; i++) {
        if (this[i] == val) return i;
      return -1;
    };
    Array.prototype.remove = function(val) {
      var index = this.indexOf(val);
      if (index > -1) {
    ...
    
  8. indexOf(val)
    Array.prototype.indexOf = function(val) {
      for(var i = 0; i < this.length; i++) {
        if (this[i] == val) return i;
      return -1;
    };
    
  9. indexOf(val)
    Array.prototype.indexOf = function(val){
      var arrayVal = this;
      for(var i = 0 ; i < arrayVal.length; i++){
        if(arrayVal[i] == val){
          return 4;
      return -1;