I tried converting this:
我尝试转换这个：
$regex = "/^[0-9]+[0-9\.]*(?<!\.)$/"
to all of these, but none are correct:
对所有这些，但没有一个是正确的：
var regex = /^(?!\.$)[0-9]+[0-9\.]*/;
var regex = /^(?!.*\.$)[0-9]+[0-9\.]*/;
var regex = /^[0-9]+[0-9\.]*(?!\.$)/;
The PHP regex correctly rejects 1.1a and 1., but the javascript regex's do not.
PHP正则表达式正确拒绝1.1a和1.但javascript正则表达式没有。
1 个解决方案
#1
6
Your PHP Regex may be better written as the following, which matches the same language, but is easier to read and doesn't need to use a negative look-behind:
您的PHP Regex可能更好地编写如下，它匹配相同的语言，但更容易阅读，不需要使用负面的后视：
$regex = "/^\d+(\.\d+)*$/"
It is also easy to translate it directly to a Javascript regex:
将它直接翻译成Javascript正则表达式也很容易：
var regex = /^\d+(\.\d+)*$/;
#1
6
Your PHP Regex may be better written as the following, which matches the same language, but is easier to read and doesn't need to use a negative look-behind:
您的PHP Regex可能更好地编写如下，它匹配相同的语言，但更容易阅读，不需要使用负面的后视：
$regex = "/^\d+(\.\d+)*$/"
It is also easy to translate it directly to a Javascript regex:
将它直接翻译成Javascript正则表达式也很容易：
var regex = /^\d+(\.\d+)*$/;