如何从字符串中删除数字? [英] How to remove numbers from a string?

问题描述

我要从字符串中删除数字:

I want to remove numbers from a string:

questionText = "1 ding ?"

我要替换数字 1 数字和问号?.可以是任何数字.我尝试了以下无效代码.

I want to replace the number 1 number and the question mark ?. It can be any number. I tried the following non-working code.

questionText.replace(/[0-9]/g, '');

推荐答案

非常接近，请尝试:

questionText = questionText.replace(/[0-9]/g, '');

replace 在现有字符串上不起作用，它返回一个新字符串.如果要使用它，则需要保留它！
同样，您可以使用一个新变量:

replace doesn't work on the existing string, it returns a new one. If you want to use it, you need to keep it!
Similarly, you can use a new variable:

var withNoDigits = questionText.replace(/[0-9]/g, '');

最后一个技巧是一次删除整个数字块，但是可能太远了:

One last trick to remove whole blocks of digits at once, but that one may go too far:

questionText = questionText.replace(/\d+/g, '');

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