获取JavaScript中出现的字符数 [英] Get number of occurrences of a character in JavaScript

问题描述

我有一个字符串，使用'，'来分配一些数据。现在我想计算该字符串中'，'的出现次数。我试过了：

I have a string that devides some data using ','. Now I want to count the occurences of ',' in that string. I tried:

var match = string.match('/[,]/i');

但这会给我null如果我试图获得匹配数组的长度。任何想法？

But this gives me null If I try to get the length of the match array. Any ideas?

推荐答案

如果你需要检查一个简单模式的出现是，那么最好不要使用常规表达式。

If you need to check the occurances of a simple pattern as "," then better don't use regular expressions.

尝试：

var matchesCount = string.split(",").length - 1;

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