Check whether a string matches a regex in JS
Use regex.test() if all you want is a boolean result:
console.log(/^([a-z0-9]{5,})$/.test('abc1')); // falseconsole.log(/^([a-z0-9]{5,})$/.test('abc12')); // trueconsole.log(/^([a-z0-9]{5,})$/.test('abc123')); // true...and you could remove the () from your regexp since you've no need for a capture.
Use test() method :
var term = "sample1";var re = new RegExp("^([a-z0-9]{5,})$");if (re.test(term)) { console.log("Valid");} else { console.log("Invalid");}
You can use match() as well:
if (str.match(/^([a-z0-9]{5,})$/)) { alert("match!");}But test() seems to be faster as you can read here.
Important difference between match() and test():
match() works only with strings, but test() works also with integers.
12345.match(/^([a-z0-9]{5,})$/); // ERROR/^([a-z0-9]{5,})$/.test(12345); // true/^([a-z0-9]{5,})$/.test(null); // false// Better watch out for undefined values/^([a-z0-9]{5,})$/.test(undefined); // true