javascript - 在Javascript正则表达式中使用的转义字符串[重复](Escape string for use in Javascript regex [duplicate])

Question

(This question already has answers here) :

((这个问题已经在这里有了答案)

：)

Closed 7 years ago .

(7年前关闭。)

Possible Duplicate:

(可能重复：)

Is there a RegExp.escape function in Javascript?

(Javascript中是否存在RegExp.escape函数？)

I am trying to build a javascript regex based on user input:

(我正在尝试根据用户输入构建javascript正则表达式：)

function FindString(input) {
    var reg = new RegExp('' + input + '');
    // [snip] perform search
}

But the regex will not work correctly when the user input contains a ?

(但是，当用户输入包含?时，正则表达式将无法正常工作?)

or * because they are interpreted as regex specials.

(或*因为它们被解释为正则表达式特殊项。)

In fact, if the user puts an unbalanced ( or [ in their string, the regex isn't even valid.

(实际上，如果用户在字符串中输入不平衡(或[ ，则正则表达式甚至无效。)

What is the javascript function to correctly escape all special characters for use in regex?

(什么是可以正确转义要在正则表达式中使用的所有特殊字符的javascript函数？)

  ask by too much php translate from so