[JS] Autotab


        
            
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            http://jsbin.com/?html,js,output

HTML
<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<meta name="viewport" content="width=device-width">

<title>JS Bin</title>

</head>

<body>

<b>Enter your 10-digit phone number:</b>

<form name="sampleform" method="post">

<input type="text" name="first" size=4 onKeyup="autotab(this, document.sampleform.second)" maxlength=3> <input type="text" name="second" size=4 onKeyup="autotab(this, document.sampleform.third)" maxlength=3> <input type="text" name="third" size=5 maxlength=4>

</form>

</body>

</html>
Javascript
function autotab(original,destination){

if (original.getAttribute&&original.value.length==original.getAttribute("maxlength"))

destination.focus()

}