HTML input box optimization to improve user experience and ease of use_HTML/Xhtml_Web page production

In order to improve user experience and ease of use, some designers will optimize things that users frequently use on web pages, such as input boxes. How are general input boxes optimized? From the perspective of user experience, simplifying the user steps and making it more convenient for users improves usability. For example, changing the color of the input box when the mouse is hovering over the input box, automatically selecting the default text in the input box, or clicking to enter Automatically clear the default content when the box is opened, etc.

This effect sounds complicated, but it is actually very simple to do. It only takes a short piece of javascript code to solve it. The following introduces the codes for several effects.

1. Click the input box to select the Html code of the content:

The most important part of this code is the onfocus part. If onfocus is not used, the same effect can be achieved by using onclick, such as onfocus="this.select()".

2. Change the border color or background color when the mouse is hovering over the input box

There are two methods for this effect: method one is to use the pseudo element in CSS: focus; method two is still using A short piece of javascript; The html code of method 1 is the same as the above example, except that the following paragraph is added to the CSS:


When the mouse hovers over the input box, the input box border will turns red, but this method is only valid in Firefox browser and IE7 or above, and IE6 does not support it, so it has certain limitations. The code for method two is mostly the same as the above example, except that a section of mouse hover code is added at the end:


Use this code, big Most browsers can support it.

3. Click the input box and the default text disappears

There is another effect. When the mouse clicks on the input box, the original default text disappears. If you enter other new content and then move the mouse away, the new content of the input box remains unchanged; if you do not enter new content, the mouse leaves the input box and the default text is restored. This effect can be achieved by just adding a short piece of javascript to judge:


The placeholder attribute of input can be used directly in HTML5:


The above three effects are comparisons Although simple javascript applications have gone beyond the scope of Html code, mastering them brings great convenience to Html applications and web page production, so when necessary, it is necessary to master some simple javascript.