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HTML5 Spinbox Control

One of the new elements added with html5 is the number control (<input type="number" ) which most web designers call the "spinbox" control because it is rendered as a box tiny up/down arrows. You can click on one of the arrows to increase or decrease the number displayed in the box. If you prefer, you can type directly into the field. The basic html code for a spinbox is shown below.

<input type="number">

A more complete example is shown below.

<input type="number" min="2" max="10" step="2" value="6" size="4">

Spinbox Control Attributes

minminimum value
maxmaximum value
stepamount of increment or decrement
valuestarting value
sizewidth of input box based on current font size

Shown below is some practical code to access the contents of the spinbox control. The additional attributes are id which allows the JavaScript getElementById method to access the element, and the onchange event to call the JavaScript function.

<!DOCTYPE html>
<html lang='en'>
<meta charset='utf-8'>

function displayNumber()

   var spinNum = document.getElementById("test").value;
   document.getElementById("show").value = spinNum;


<input type="text" id="show" size="4"><br />
<input type="number" id="test" min="0" max="12" step="2" value="4" size="4" onchange="displayNumber()">


More HTML Code:
• HTML Linking Basics
• Text Features
• Radio Button Basics
• The HTML BODY tag
• HTML Definition List
• Changing the Size of an Image on Your Webpage
• Line Breaks in HTML
• Add an Image to a Web Page
• HTML Bulleted or Unordered List
• Web Color Names Table

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