javascript拆分 [英] javascript split

问题描述

我可以使用JavaScript的拆分将逗号分隔的项列表放在数组中：

I can use JavaScript's split to put a comma-separated list of items in an array:

var mystring = "a,b,c,d,e";
var myarray = mystring.split(",");

我想到的是有点复杂。我有这个以逗号分隔的字符串：

What I have in mind is a little more complicated. I have this comma separated string:

"mystring_109_all,mystring_110_mine,mystring_125_all"

如何将此字符串拆分为数组

how do i split this string in to an array

推荐答案

您可以为 split（）正则表达式 em>，所以要分割逗号或下划线，请使用以下内容：

You can provide a regular expression for split(), so to split on a comma or an underscore, use the following:

var mystring = "mystring_109_all,mystring_110_mine,mystring_125_all";
var myarray  = mystring.split(/[,_]/);

如果你想要更有活力的东西，你可能想尝试像搜索并不替换，一种使用 replace（）<的方法/ em>解析复杂字符串的函数。例如，

If you're after something more dynamic, you might want to try something like "Search and don't replace", a method of using the replace() function to parse a complex string. For example,

mystring.replace(/(?:^|,)([^_]+)_([^_]+)_([^_]+)(?:,|$)/g,
  function ($0, first, second, third) {
    // In this closure, `first` would be "mystring",
    // `second` would be the following number,
    // `third` would be "all" or "mine"
});

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