Regex Match Whole String

Regular expressions are patterns used to match character combinations in strings. In JavaScript, regular expressions are also objects.

Regex Match Entire String

A regular expression pattern is composed of simple characters, such as /abc/, or a combination of simple and special characters, such as /ab*c/ or /Chapter (\d+)\.\d*/.

			
					let str = 'Hello 456 World 123';
let regex1 = /\b(World)\b/g;
let regex2 = /\b(world)\b/g;

console.log(str.match(regex1)); // [ 'World' ]
console.log(str.match(regex2)); // null

			
	

			
	
			

		
	

			
					let str = 'abc'
let pat = /^abc$/g;
console.log(str.match(pat));

			
	

			
	
			

		
	

References

• Regular expressions