正则表达式仅用制表符替换字符串

Question

How can use the RegEx to replace a string if ONLY it has a tab or sequence of tabs and ignore otherwise.

Example:

str = "\\t\\t\\t\\t"; -> replace this string with nothing ie output of str = ""; str = "\\t"; -> replace this string with nothing ie output of str = "";

str = "\\t\\tvar a = 10"; -> ignore replacing.

Thanks!

Answer 1

使用正则表达式替换，应该是这样的：

str.replace(/^\t+$/, '');

Answer 2

Try this. It should work.

str.replace(/^\t+$/, "");