Answers for "how to check lowercase in javascript"

javascript lowercase string

var str = "My Big Boy!"
var res = str.toLowerCase(); //res is "my big boy!"

javascript string to lowercase

var string = "TO loWer CASE";
console.log(string.toLowerCase()); // to lower case

how to check string uppercase or lowersace using regex javascript

var regex = /^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[!#\*\?])(?=.{8,})/;