Javascript 正则表达式替换除数字和小数点以外的所有内容

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时间:2020-08-23 13:01:46  来源:igfitidea点击:

Regex to replace everything except numbers and a decimal point

javascriptregex

提问by guildsbounty

I have a text field that needs to remain only text or decimal. Here is the code that I'm currently using to replace everything except numbers and a decimal point. Issue is, I can't figure out a regex that will identify everything else

我有一个只需要保留文本或十进制的文本字段。这是我目前用来替换除数字和小数点以外的所有内容的代码。问题是,我想不出一个可以识别其他所有内容的正则表达式

document.getElementById(target).value = newVal.replace(/\D[^\.]/g, "");

The \D works fine, but I've tried (?!.), (?!\.), [^.], [^\.]and so on...

\D 工作正常,但我已经尝试过(?!.), (?!\.), [^.], [^\.]等等......

Any suggestions for a regular expression that identifies positively with anything except a number or a decimal?

对于正则表达式,除了数字或小数以外的任何东西都有什么建议吗?

Thanks for the help

谢谢您的帮助

回答by Chandu

Use this:

用这个:

document.getElementById(target).value = newVal.replace(/[^0-9.]/g, "");

回答by lubosdz

Removing only decimal part can be done as follows:

可以按如下方式仅删除小数部分:

number.replace(/(\.\d+)+/,'');

This would convert 13.6667px into 13px (leaving units px untouched).

这会将 13.6667px 转换为 13px(保持单位 px 不变)。

回答by Beachhouse

Try this:

尝试这个:

document.getElementById(target).value = newVal.replace(/^\d+(\.\d{0,2})?$/, "");

document.getElementById(target).value = newVal.replace(/^\d+(\.\d{0,2})?$/, "");

回答by divya

Check the link Regular Expression Demo

检查链接正则表达式演示

use the below reg exp

使用下面的正则表达式

[a-z] + [^0-9\s.]+|.(?!\d)

[az] + [^0-9\s.]+|.(?!\d)