一个js选项卡

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <title>无标题文档</title>
        <style type="text/css">
            body {
                font-size: 80%;
                font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif;
            }
            
            ul#tabs {
			    list-style-type: none;
                margin: 30px 0 0 0;
                padding: 0 0 0.3em 0;
            }
            
            ul#tabs li {
                display: inline;
            }
            
            ul#tabs li a {
                color: #42454a;
                background-color: #dedbde;
                border: 1px solid #c9c3ba;
                border-bottom: none;
                padding: 0.3em;
                text-decoration: none;
            }
            
            ul#tabs li a:hover {
                background-color: #f1f0ee;
            }
            
            ul#tabs li a.selected {
                color: #000;
                background-color: #f1f0ee;
                font-weight: bold;
                padding: 0.7em 0.3em 0.38em 0.3em;
            }
            
            div.tabContent {
                border: 1px solid #c9c3ba;
                padding: 0.5em;
                background-color:#f1f0ee;               
            }
            
            div.hide {
                display: none;
            }
        </style>
        <script type="text/javascript">
		
            var tabLinks = new Array();
            
            var contentDivs =new Array();
			
            function init(){
                //Grab the tab links and content div from the page
                
                var tabListItems = document.getElementById('tabs').childNodes;
				
                for (var i = 0; i < tabListItems.length; i++) {
                    if (tabListItems[i].nodeName == 'LI') {
                        //Grab a elements
                        var tabLink = getFirstChildWithTagName(tabListItems[i], 'A');
                        //Grab id properties
                        var id = getHash(tabLink.getAttribute('href'));
                        //Grab the tabs links
                        tabLinks[id] = tabLink;
                        //Grab div contents
                        contentDivs[id] = document.getElementById(id);
                    }
                }
                //Assign onclick events to the tab links,and highlight the first tab
                var i = 0;
                for (var id in tabLinks) {
                    tabLinks[id].onclick = showTab;
                    tabLinks[id].onfocus = function(){
                        this.blur()
                    };
                    if (i == 0) 
                        tabLinks[id].className = 'selected';
						i++;
                }
                //Hide all content divs except the first
                var i = 0;
                for (var id in contentDivs) {
                    if (i != 0) 
                        contentDivs[id].className = 'hide';
                    i++;
                }
            }
            
            function showTab(){

                var selectedId = getHash(this.getAttribute('href'));
                
                //Highlight the selected tab,and dim all others.
                //Also show the selected Content div,and hide all others.
                for (var id in contentDivs) {
                    if (id == selectedId) {
                        tabLinks[id].className = 'selected';
                        contentDivs[id].className = 'tabContent';
                    }
                    else {
                        tabLinks[id].className = '';
                        contentDivs[id].className = 'hide';
                    }
                }
                //Stop the browser following the link
                return false;
            }
            
            function getFirstChildWithTagName(element, tagName){
                for (var i = 0; i < element.childNodes.length; i++) {
                    if (element.childNodes[i].nodeName == tagName) 
                        return element.childNodes[i];
                }
            }
            
            function getHash(url){
                var hashPos = url.lastIndexOf('#');
                return url.substring(hashPos + 1);
            }
            
            window.onload = init;
        </script>
    </head>
    <body>
        <ul id="tabs">
            <li>
                <a href="#about">About Javascript</a>
            </li>
            <li>
                <a href="#advantages">Advantages of tabs</a>
            </li>
            <li>
                <a href="#usage">Using tabs</a>
            </li>
        </ul>
        <div class="tabContent" id="about">
            <h2>1111111111111</h2>
            <div>
                <p>
                    JavaScript tabs partition your Web page content into tabbed sections. Only one section at a time is visible.
                </p>
                <p>
                    The code is written in such a way that the page degrades gracefully in browsers that don't support JavaScript or CSS.
                </p>
            </div>
        </div>
        <div class="tabContent" id="advantages">
            <h2>22222222</h2>
            <div>
                <p>
                    JavaScript tabs partition your Web page content into tabbed sections. Only one section at a time is visible.
                </p>
                <p>
                    The code is written in such a way that the page degrades gracefully in browsers that don't support JavaScript or CSS.
                </p>
            </div>
        </div>
        <div class="tabContent" id="usage">
            <h2>333333333333</h2>
            <div>
                <p>
                    JavaScript tabs partition your Web page content into tabbed sections. Only one section at a time is visible.
                </p>
                <p>
                    The code is written in such a way that the page degrades gracefully in browsers that don't support JavaScript or CSS.
                </p>
            </div>
        </div>
    </body>
</html>

原文地址:https://www.cnblogs.com/coolicer/p/1939499.html