If string matches given Regex
Given a string and regular expression (regex), check if the string matches the given regular expression, using JavaScript.
Solution
To check if the string str
matches the regular expression regex
using JavaScript, call test()
method on the regex
and pass str
as argument to the method.
regex.test(str)
test()
method returns true
if the given string matches the regular expression, or false
otherwise.
Programs
1. Given a string str
and regular expression regex
. The regular expression matches one or more characters from lowercase alphabets and numbers.
var str = 'abcd12345xyz';
var regex = /^[a-z0-9]+$/;
if ( regex.test(str) ) {
console.log('string matches given regex');
} else {
console.log('string does not match given regex');
}