user interface

Today let us learn about novalidate and formnovalidate attributes of HTML5 form.

In this video tutorial I’m taking 2 input fields and making one input field as required. Also take 2 submit buttons, with one validating the user entered data and the other one bypassing the validation rules set.

HTML file: formnovalidate
index.html

< !DOCTYPE html>
<html>
<head>
<title>novalidation: HTML5</title>
<link href="myStyle.css" rel="stylesheet"/>
</head>
<body>
 
<form>
<label for="name">Name: </label>
 <input type="text" name="name" required/><br />
 
<label for="age">Age: </label>
 <input type="number" name="age"/><br />
 
<input type="submit" value="Submit"/>
<input type="submit" value="Save" formnovalidate/>
</form>
 
</body>
</html>

Here we are using formnovalidate attribute on submit button which has a value of Save. This button bypasses the validation rules.

HTML file: novalidate
index.html

< !DOCTYPE html>
<html>
<head>
<title>novalidation: HTML5</title>
<link href="myStyle.css" rel="stylesheet"/>
</head>
<body>
 
<form novalidate>
<label for="name">Name: </label>
 <input type="text" name="name" required/><br />
 
<label for="age">Age: </label>
 <input type="number" name="age"/><br />
 
<input type="submit" value="Submit"/>
</form>
 
</body>
</html>

Here I’ve added novalidate attribute directly to the form tag, which bypasses any validation rules written to it or to it’s child elements/tags.

CSS file associated with this is same as present at pattern and title Attribute of Form Field: HTML5

novalidate and formnovalidate attributes of HTML5 form

[youtube https://www.youtube.com/watch?v=BbU2KndW7Ho]

YouTube Link: https://www.youtube.com/watch?v=BbU2KndW7Ho [Watch the Video In Full Screen.]

Why would we ever need novalidation for forms ?
Sometimes we enter a lengthy form and submit, but due to some validation mistakes all our entries gets erased, and the user may not have the patience to re-enter everything from beginning. He may skip it altogether. To avoid that, you can build an interface wherein user can save her data first and then can submit it after reviewing it. In such a situation we can make use of a temporary database table to store user entered information and display for review with appropriate messages to correct the wrong inputs – user can correct them and Submit.

There are many small simple tweaks in CSS that can highly enhance the over all design of a web page. CSS Hover Over Effect is one of them.

The CSS pseudo class which is used to accomplish hover over effect is:

 :hover

[youtube https://www.youtube.com/v/R3weCcjVylo]

YouTube Link: https://www.youtube.com/v/R3weCcjVylo [Watch the Video In Full Screen.]

Note: CSS pseudo classes doesn’t work on Internet Explorer. So while learning this, make sure you are using Chrome or Mozilla Firefox or Apple’s Safari.

We can apply hover over effect to almost any valid html element. Like: anchor tag, tables, lists etc.

Below is the coding for the example discussed in the above video:

 
<html>
 <head><title>Hover Over Effect In CSS2</title>
  <style type="text/css">
 
    li:hover {
        background-color: pink;
        width: 100px;
    }
 
  </style>
 </head>
 <body>
 
   <ul>
    <li>  Microsoft</li>
    <li>  Apple</li>
    <li>  Oracle</li>
   </ul>
 
 </body>
</html>

In the above example, we are applying hover over effect to a unordered list of elements. And we have changed the background color of the list item when the mouse hovers over the list item elements.

Make sure you try this :hover pseudo class with other html elements too. You can really create very good user interface with the help of hover over effect.

Tag: user interface

Form novalidate attribute: HTML5

CSS Hover Over Effect ( CSS pseudo class )