Javascript Javascript通配符变量？
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Javascript wildcard variable?
提问by deceze
The value of product_idmight be some combination of letters and numbers, like: GB47NTQQ.
的值product_id可能是字母和数字的某种组合，例如：GB47NTQQ。
I want to check to see if all but the 3rd and 4th characters are the same.
我想检查除第 3 个和第 4 个字符之外的所有字符是否相同。
Something like:
就像是：
if product_id = GBxxNTQQ //where x could be any number or letter.
//do things
else
//do other things
How can I accomplish this with JavaScript?
如何使用 JavaScript 完成此操作？
回答by Lawson Kurtz
Use regular expression and string.match(). Periods are single wildcard characters.
使用正则表达式和 string.match()。句点是单个通配符。
string.match(/GB..NTQQ/);
回答by deceze
回答by RobG
Answers so far have suggested match, but testis likely more appropriate as it returns trueor false, whereas matchreturns nullor an array of matches so requires (implicit) type conversion of the result within the condition.
到目前为止的答案建议match，但test可能更合适，因为它返回true或false，而match返回null或匹配数组，因此需要（隐式）条件内的结果类型转换。
if (/GB..NTQQ/.test(product_id)) {
...
}
回答by Adam Dymitruk
if (myString.match(/regex/)) { /*Success!*/ }
You can find more information here: http://www.regular-expressions.info/javascript.html
您可以在此处找到更多信息：http: //www.regular-expressions.info/javascript.html
