<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" name="viewport" content="width=device-width, initial-scale=1"/> <link rel="stylesheet" type="text/css" href="css/bootstrap.css" /> </head> <body> <nav class="navbar navbar-default"> <div class="container-fluid"> </div> </nav> <div class="col-md-6 well"> <hr style="border-top:1px dotted #ccc;"/> <div class="col-md-4"> <div class="form-group"> <input type="text" class="form-control" onkeyup="changeToUpper(this.value)" placeholder="Enter here..."/> </div> </div> <div class="col-md-4"> <div class="form-group"> <input type="text" class="form-control" id="all_upper" readonly="readonly"/> </div> </div> <div class="col-md-4"> <div class="form-group"> <input type="text" class="form-control" id="first_upper" readonly="readonly"/> </div> </div> <br style="clear:both;"/> <div class="col-md-4"> <div class="form-group"> <input type="text" class="form-control" onkeyup="changeToLower(this.value)" placeholder="Enter here..."/> </div> </div> <div class="col-md-4"> <div class="form-group"> <input type="text" class="form-control" id="all_lower" readonly="readonly"/> </div> </div> <div class="col-md-4"> <div class="form-group"> <input type="text" class="form-control" id="first_lower" readonly="readonly"/> </div> </div> </div> </body> </html>
function changeToUpper(string){ if(string==""){ document.getElementById('all_upper').value=""; document.getElementById('first_upper').value=""; }else{ document.getElementById('all_upper').value=string.toUpperCase(); document.getElementById('first_upper').value=UpperCaseFirstLetter(string); } } function changeToLower(string){ if(string==""){ document.getElementById('all_lower').value=""; document.getElementById('first_lower').value=""; }else{ document.getElementById('all_lower').value=string.toLowerCase(); document.getElementById('first_lower').value=LowerCaseFirstLetter(string); } } function UpperCaseFirstLetter(string) { return string[0].toUpperCase() + string.slice(1); } function LowerCaseFirstLetter(string) { return string[0].toLowerCase() + string.slice(1); }