而不是JavaScript的array_count_values [英] array_count_values for JavaScript instead

问题描述

我有以下PHP脚本，现在我需要在JavaScript中做同样的事情。 JavaScript中的函数是否与PHP函数类似，我一直在搜索但找不到类似的东西？我想要做的是计算某个单词在数组中使用的次数。

I have the following PHP-script, now I need to do the same thing in JavaScript. Is there a function in JavaScript that works similar to the PHP function, I have been searching for days but cannot find anything similar? What I want to do is to count the number of times a certain word is beeing used in an array.

$interfaceA = array($interfaceA_1,$interfaceA_2,$interfaceA_3,$interfaceA_4,$interfaceA_5,$interfaceA_6,$interfaceA_7,$interfaceA_8);       

$interfaceA_array=array_count_values($interfaceA);
$knappsatsA = $interfaceA_array[gui_knappsats];
$touchpanelA = $interfaceA_array[gui_touchpanel];

推荐答案

为什么不简单地创建一个新的javascript数组计数
迭代原始数组，并增加数组中遇到的键的计数计数。
http://jsfiddle.net/4t28P/1/

Why not simply create a new javascript array "counts" Iterate over original array, and increament the count of "counts" for keys encountered in the array. http://jsfiddle.net/4t28P/1/

var myCurrentArray = new Array("apple","banana","apple","orange","banana","apple");

var counts = {};

for(var i=0;i< myCurrentArray.length;i++)
{
  var key = myCurrentArray[i];
  counts[key] = (counts[key])? counts[key] + 1 : 1 ;

}

alert(counts['apple']);
alert(counts['banana']);

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