问题
I want to use the pattern *1*. I have tried \*1\*, but it doesn't work. Where is the problem?
回答1:
You have to escape it with a backslash:
/\*1\*/
Otherwise, an unescaped * in a RegExp will mean: Match 0 or more of the Preceding Character Group.
Update:
If you use the RegExp constructor, do it this way:
new RegExp("\\*1\\*")
You have to double-escape the backslashes because they need to be escaped in the string itself.
回答2:
need to use a backslash \ as the escape character in regexes.
来源：https://stackoverflow.com/questions/15205536/how-to-escape-asterisk-in-regexp