拼接在JavaScript字符串数组索引 [英] Splicing a string indexed array in JavaScript

问题描述

g·天所有，

我有一个字符串数组的索引，我想从删除项目。

I have a string indexed array that I would like to remove an item from.

考虑下面的例子code：

Consider the following example code:

    var arr = new Array();       
    arr[0] = "Zero";
    arr[1] = "One";
    arr[2] = "Two";
    arr.splice(1, 1);

    for (var index in arr)
        document.writeln(arr[index] + " ");

    //This will write: Zero Two

    var arr = new Array();
    arr["Zero"] = "Zero";
    arr["One"] = "One";
    arr["Two"] = "Two";

    arr.splice("One", 1); //This does not work
    arr.splice(1, 1); //Neither does this

    for (var index in arr)
        document.writeln(arr[index] + " ");

    //This will write: Zero One Two

我如何从第二个例子删除一就像我在第一次做？

How do I remove "One" from the second example like I did in the first?

干杯，

迈克尔

推荐答案

要做到这一点，正确的方法是不是一个数组，但一个对象：

The proper way to do this is not with an Array but an object:

var x = {};
x['Zero'] = 'Zero';
x['One'] = 'One';
x['Two'] = 'Two';
console.log(x); //  Object Zero=Zero One=One Two=Two
delete x['One'];
console.log(x); //  Object Zero=Zero Two=Two

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