如何从字符串中获取javascript中邮政编码的4个序列号？

Question

我试图找出如何从字符串中获取4个连续数字，这将是字符串中的邮政编码。 The regex seems to work fine in regex 101但是当我尝试在javascript中使用它时，我收到一条错误，内容为Uncaught SyntaxError: Unexpected token ?

我的代码是

var str = "1 George Road, Sydney  NSW 2000"; 
console.log(str.match(((?<!\d)(\d{4}(\d{4})?)\b)));

Answer 1

您必须在正则表达式中包含//g，例如/Your Pattern/g

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var str = "1 George Road, Sydney  NSW 2000"; 
console.log(str.match(/((?<!\d)(\d{4}(\d{4})?)\b)/g));

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<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

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