JavaScript数组搜索并删除字符串？ [英] Javascript array search and remove string?

问题描述

我有：

var array = new Array();
array.push("A");
array.push("B");
array.push("C");

我希望能够做一些事情，如：

I want to be able to do something like:

array.remove（B）;

但没有删除功能。我如何做到这一点？

but there is no remove function. How do I accomplish this?

推荐答案

遍历列表以相反的顺序，并使用<$c$c>.splice方法。

Loop through the list in reverse order, and use the .splice method.

var array = ['A', 'B', 'C']; // Test
var search_term = 'B';

for (var i=array.length-1; i>=0; i--) {
    if (array[i] === search_term) {
        array.splice(i, 1);
        // break;       //<-- Uncomment  if only the first term has to be removed
    }
}

相反的顺序很重要，当全部搜索词的出现已被删除。否则，计数器会增加，你会跳过元素。

The reverse order is important when all occurrences of the search term has to be removed. Otherwise, the counter will increase, and you will skip elements.

当只有第一次出现已经被删除，下面也将工作：

When only the first occurrence has to be removed, the following will also work:

var index = array.indexOf(search_term);    // <-- Not supported in <IE9
if (index !== -1) {
    array.splice(index, 1);
}

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