正则表达式用单个空格替换多个空格 [英] Regex to replace multiple spaces with a single space

问题描述

给出如下字符串：

"The dog      has a long   tail, and it     is RED!"

可以使用哪种jQuery或JavaScript魔法将空格最多只保留一个空格？

What kind of jQuery or JavaScript magic can be used to keep spaces to only one space max?

目标：

"The dog has a long tail, and it is RED!"

推荐答案

鉴于您还要覆盖制表符，换行符等，只需用'' \\\ + c $ c>：

Given that you also want to cover tabs, newlines, etc, just replace \s\s+ with ' ':

string = string.replace(/\s\s+/g, ' ');

如果你真的想要只覆盖空格（因而不是标签，换行符等），那么这样做：

If you really want to cover only spaces (and thus not tabs, newlines, etc), do so:

string = string.replace(/  +/g, ' ');

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