javascript用特殊字符分割字符串 [英] javascript splitting a string at special character

问题描述

我试图智能地预先填写表格，我想根据用户的电子邮件地址预先填写名字和姓氏输入，例如，

I am trying to "intelligently" pre-fill a form, I want to prefill the firstname and lastname inputs based on a user email address, so for example,

[e-mail]返回Jon Doe

[e-mail]返回Jon Doe

[e-mail]返回Jon Doe

[e-mail] RETURNS Jon Doe
[e-mail] RETURN Jon Doe
[e-mail] RETURNS Jon Doe

我设法在 @ 之前获取了字符串，

I have managed to get the string before the @,

var email = letters.substr(0, letters.indexOf('@'));

但是当分隔符可以是多个值时，无法解决split（）的问题，我可以这样做，

But cant work out how to split() when the separator can be multiple values, I can do this,

email.split("_")

但是如何在其他电子邮件地址上分割有效的特殊字符？

but how can I split on other email address valid special characters?

推荐答案

JavaScript的字符串 split 方法可以使用正则表达式。

JavaScript's string split method can take a regex.

例如，以下内容将在上分割。，-和 _ 。

For example the following will split on ., -, and _.

"i-am_john.doe".split(/[.\-_]/)

返回以下内容。

["i", "am", "john", "doe"]

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