A colleague asked me about a Regular expression problem, and I can\'t seem to find and answer for him.
We\'re using boundaries to highlight certain lengths of text i
There are 2 ways to write your regular expressions in Javascript
In literal way, you use as you learned in your textbook, e.g. /balabala/ But in RegExp object, regular expression is written as a string.
Try the following codes, you know what string behaves in javascript.
alert("O\K");
alert("O\\K");
There's another occasion when Regexp written in a textarea or input box. For example,
http://www.pagecolumn.com/tool/regtest.htm
In this case, \ in Regexp need not be escaped.