javascript - 从字符串中清除方式百分比

Question

如何使用 Javascript 从下面的字符串中清除 29%？

This is a long string which is 29% of the others.

我需要某种方法来删除所有百分比，因此代码也必须适用于此字符串:

This is a long string which is 22% of the others.

Answer 1

正则表达式 \d+%匹配一位或多位后跟 % 的数字.然后后面跟着一个可选的空格，这样您就不会在一行中出现两个空格。

var s = "This is a long string which is 29% of the others.";
s = s.replace(/\d+% ?/g, "");
console.log(s);
// This is a long string which is of the others.

如果表达式末尾没有可选空格，您最终会得到

    // This is a long string which is  of the others.
    //-------------------------------^^