JavaScript - Set Focus on Particular Field in a Form using JavaScript Function

In this example, we will learn how to set focus in any textbox (field) in a form using JavaScript Function.

Set Focus in any Field of a Form using JavaScript Function

JavaScript function:

<script type="text/javascript">
    function setFocus(indexForm, indexField) {
        document.forms[indexForm].elements[indexField].focus();
    }
</script>

HTML Source Code with JavaScript:

<!--JavaScript - Set Focus on Particular Field in a Form using JavaScript Function.-->
<html>
    <head>
        <title>JavaScript - Set Focus on Particular Field in a Form using JavaScript Function.</title>
        <script type="text/javascript">
            function setFocus(indexForm, indexField) {
                document.forms[indexForm].elements[indexField].focus();
            }
        </script>
    </head>

    <body onload="setFocus(0,0)">
        <h1>JavaScript - Set Focus on Particular Field in a Form using JavaScript Function.</h1>
        <form>
            <b>Name:</b><br />
            <input type="text" width="100px" /><br />
            <b>Address:</b><br />
            <input type="text" width="200px" /><br />
            <b>Mobile:</b><br />
            <input type="text" width="50px" /><br />
            <input type="button" value="Submit." />
        </form>
    </body>
</html>

Result:

set text on status bar using javascript function

Click for DEMO →

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