Adding Elements like textbox, button, radio button etc in a html form using JavaScript is very simple. JavaScript’s document object has a method called createElement() which can be used to create html elements dynamically.

We had used this function in our tutorial: Dynamic combobox-listbox-drop-down using javascript to add dynamic options to a combo box-listbox. Let us use this function to create textboxes, radio buttons, buttons etc dynamically and add them in our page.

Following is the source code of our example.

 

<HTML>

<HEAD>
<TITLE>Dynamically add Textbox, Radio, Button in html Form using JavaScript</TITLE>
<SCRIPT language="javascript">
function add(type) {
    //Create an input type dynamically.
    var element = document.createElement("input");
    //Assign different attributes to the element.
    element.setAttribute("type", type);
    element.setAttribute("value", type);
    element.setAttribute("name", type);
    var foo = document.getElementById("fooBar");
    //Append the element in page (in span).
    foo.appendChild(element);
}
</SCRIPT>
</HEAD>
<BODY>
<FORM>
<H2>Dynamically add element in form.</H2>
Select the element and hit Add to add it in form.
<BR/>
<SELECT name="element">
    <OPTION value="button">Button</OPTION>
    <OPTION value="text">Textbox</OPTION>
    <OPTION value="radio">Radio</OPTION>
</SELECT>
<INPUT type="button" value="Add" onclick="add(document.forms[0].element.value)"/>
<span id="fooBar">&nbsp;</span>
</FORM>
</BODY>
</HTML>