如何在javascript中组合正则表达式？

Question

This might be easy for those who play with regular expressions.

str = "Here is 'sample' test";
str = str .replace(new RegExp('"', 'g'), '');
str = str .replace(new RegExp("'", 'g'), '');

How to combine 2nd and 3rd line, I want to combine regular expressions new RegExp('"', 'g') and new RegExp("'", 'g') into one regular expression, this will make it in one line. Thanks in advance.

Answer 1

str = str.replace(/"|'/g, '')

Answer 2

str.replace(/['"]+/g, '')

Answer 3

尝试：

str = str.replace(new RegExp('["\']', 'g'), '');

Answer 4

You can simply use a character class for this, to match both single and double quotes you can use ['"] .

In a full regex you would need to escape one of the quotes though.

var str = "here is 'sample' test";
str = str.replace(/["']/g, '');

Answer 5

Similar to Andrew's solution :

str.replace(/"|'/, 'g')

And if you seeking for a good explanation then this has been discussed on a different threat where Alan Moore explains good. Read here .

Answer 6

str = "Here is 'sample' test".replace(new RegExp('"', 'g'), '').replace(new RegExp("'", 'g'), '');

一个与你的基本相同的例子，除了它使用方法链。