输入为变量时.replace不执行任何操作

Question

I'm trying to replace a variable globaly in a string, but so far this just returns the same string without modifying it, don't know what I'm doing wrong. Can somebody point out what's happening?

 var line = "tooth"; var char = line.charAt(0); line.replace(new RegExp(char,"g"), ""); console.log(line); 

Answer 1

再次将其分配给变量line

line = line.replace(new RegExp(char,"g"), "");