您的位置：首页 > Web前端 > HTML

Html 5中自定义data-*特性

2014-02-19 18:06 295 查看

转自：/article/4752467.html

Html 5中支持用户自定义的data-*特性，它们在UI是不可见的。例如data-length,它可以附加在input的标签上。更加具体信息可参考W3C Html 5 data-说明书

有这么一段描述:

Custom data attributes are intended to store custom data private to the page or application, for which there are no more appropriate attributes or elements.

接下来我们就可以实现这样一个简单例子:

<!DOCTYPE html>
<html>
<head>
<title>Html5 custom data attribute Test</title>
</head>
<body >
<li class="user" data-name="Peter Liu" data-city="ShangHai"
data-lang="CSharp" data-food="apple">
<b>Peter says:</b> <span>Hello, how are you?</span>
</li>
<script type="text/javascript">
var user = document.getElementsByTagName("li")[0];
var pos = 0, span = user.getElementsByTagName("span")[0];

var phrases = [
{ name: "city", prefix: "I am from " },
{ name: "food", prefix: "I like to eat " },
{ name: "lang", prefix: "I like to program in " }
];

user.addEventListener("click", function () {
var phrase = phrases[pos++];
// Use the .dataset property
span.innerHTML = phrase.prefix + user.dataset[phrase.name];
}, false);

</script>
</body>
</html>

上面的li标签中嵌入一些data-*特性，当你点击那个span，读取了每个data-*的value, 最后实现一个切换文字效果。你有注意到上面js中有用到一个dataset属性。W3C官方也是有关于dataset的介绍。上面的代码测试通过在
Firefox 11.0, Chrome 18.0.1025.151

注意这个在IE9是不支持的。 IE9 需要改写为getAttribute

<!DOCTYPE html>
<html>
<head>
<title>Html5 custom data attribute Test</title>
</head>
<body >
<li class="user" data-name="Peter Liu" data-city="ShangHai"
data-lang="CSharp" data-food="apple">
<b>Peter says:</b> <span>Hello, how are you?</span>
</li>
<script type="text/javascript">
var user = document.getElementsByTagName("li")[0];
var pos = 0, span = user.getElementsByTagName("span")[0];

var phrases = [
{ name: "city", prefix: "I am from " },
{ name: "food", prefix: "I like to eat " },
{ name: "lang", prefix: "I like to program in " }
];

user.addEventListener("click", function () {
var phrase = phrases[pos++];
// Use the .dataset property
span.innerHTML = phrase.prefix + user.getAttribute('data-'+phrase.name);
}, false);

</script>
</body>
</html>

上面的代码在IE 9.0.8112测试通过。您也可以在IE, FF中单步调试js看其中结果

希望对您Web开发有帮助。

内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理

标签：

相关文章推荐

新的分享

章节导航