Javascript: converting string to uppercase and lowercase

// to lowercase  
var sometext=”This is some text.”;
var casechanged=sometext.toLowerCase();

// to uppercase 
var sometext=”This is some text.”;
var casechanged=sometext.toUpperCase();

Source:
http://www.developertutorials.com/tutorials/javascript/javascript-lower-case-upper-case-051019-1020/