<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
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<title>Document</title>
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<body>
<script>
String.prototype.ucfirst = function(){
return this.substr(0,1).toUpperCase() + this.substr(1).toLowerCase();
};
String.prototype.myTrim = function () {
return this.replace(/\s/g, '');
};
var s1 = new String('hello');
console.log(s1.ucfirst());
var s2 = new String(' hello ');
console.log(s2.myTrim());
</script>
</body>
</html>