javascript - 检查字符串是否与JS中的正则表达式匹配(Check whether a string matches a regex in JS)

Question

I want to use JavaScript (can be with jQuery) to do some client-side validation to check whether a string matches the regex:(我想使用JavaScript（可以使用jQuery）进行一些客户端验证来检查字符串是否与正则表达式匹配：)

^([a-z0-9]{5,})$ Ideally it would be an expression that returned true or false.(理想情况下，它将是一个返回true或false的表达式。) I'm a JavaScript newbie, does match() do what I need?(我是一个JavaScript新手， match()做我需要的吗？) It seems to check whether part of a string matches a regex, not the whole thing.(它似乎检查字符串的一部分是否匹配正则表达式，而不是整个事物。)   ask by Richard translate from so

Answer 1

Use regex.test() if all you want is a boolean result:(如果你想要的只是一个布尔结果，请使用regex.test() ：)

console.log(/^([a-z0-9]{5,})$/.test('abc1')); // false console.log(/^([a-z0-9]{5,})$/.test('abc12')); // true console.log(/^([a-z0-9]{5,})$/.test('abc123')); // true ...and you could remove the () from your regexp since you've no need for a capture.(...你可以从正则表达式中删除() ，因为你不需要捕获。)