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- var patternTag = /(\?|\&)(tag=)(.*?)(\&|$)/gi;
- var url = "?tag=a";
- console.log(!!url.match(patternTag));
- console.log(!!url.match(patternTag));
- console.log(!!url.match(patternTag));
- console.log(!!url.match(patternTag));
- console.log(!!url.match(patternTag));
- /*
- output:
- =======
- true
- true
- true
- true
- true
- */
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