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JS control text Large and small display code

Source: Internet
Author: User
Tags access database jquery library
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JS control text large and small display

The code is as follows Copy Code

<meta http-equiv= "Content-type" content= "text/html; Charset=utf-8 "/>
<title>js control text Large and small display </title>
<body>
<script language= "JavaScript" >
function Setfontsize (objid,size) {
document.getElementById (objid). style.fontsize=size+ ' px ';
}
</script>
<div id= "Content" >
<p> Site A PHP Programmer's working life notes, this site contains the PHP network programming, database (mainly MySQL and Access database), javascript,jquery,div+css,html,windows system, Learning notes and life experience accumulation in Linux systems and health!</p>
</div>
<a onclick= "setfontsize (' content ')" > Big </a>
<a onclick= "setfontsize (' content ')" > </a>
<a onclick= "setfontsize (' content ', ')" > Small </a>
</body>

Jqeury Implementation method

The first page is the HTML section:

The code is as follows Copy Code
<ul id= "Resizer" >
<li id= "F_text" > Font size:</li>
<li id= "f_s" ><a href= "javascript:void (0)" > Small </a></li>
<li id= "f_m" ><a href= "javascript:void (0)" > </a></li>
<li id= "f_l" ><a href= "javascript:void (0)" > Big </a></li>
</ul>

Next, don't forget to introduce the JQuery library, this is not much to say, just a reminder, the last is a few lines of simple execution code:

The code is as follows Copy Code
$ (document). Ready (function () {
$ (' #resizer li '). Click (function () {
var fontsize = 1.4;
var name = $ (this). attr (' id ');
if (name = = ' f_s ') {
FontSize-= 0.1
else if (name = = ' f_l ') {
FontSize + 0.1
else if (name = = ' F_m ') {
FontSize = 1.4
}
$ ('. Entry P '). css (' font-size ', FontSize + ' em ')//'. Entry P ' is the selector of the body to control
});
});

The code is very simple, I like this streamlined but the effect of obvious effect, also very good understanding, because I am the whole station font with the unit EM, so the above JQuery code is also in the EM as units, individuals or compared to the recommended EM as font units.

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