First letter uppercase, the rest lower case

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How do I make the first letter of a string uppercase in JavaScript? 69 answers

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This is a simple script that will allow you to do this.

<input type="text" id="name" onblur="capitalize(this.id)" value="" autofocus>

<script>
    function capitalize(id)
    {
        var text = document.getElementById(id).value; //get the text
        var firstL = text.slice(0,1).toUpperCase(); //get the first character and make it Uppercase
        var rest = text.slice(1).toLowerCase(); //get the rest of the string and make it Lowercase
        var text = firstL.concat(rest); //create the new text store it
        document.getElementById(id).value = text; //set the value of the field
    }
</script>

The onblur event could be changed with a different event such as onkeyup for more immediate results.

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