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Legal StudiesHTML onoffline 事件属性
HTML onoffline 事件属性会在浏览器开始脱机工作时触发。
语法
以下是语法 −
<tagname onoffline=”script”></tagname>
让我们看一个 HTML onoffline 事件属性的示例−
示例
<!DOCTYPE html>
<html>
<style>
body {
color: #000;
height: 100vh;
background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) no-repeat;
text-align: center;
}
.show {
font-size: 1.2rem;
color: #fff;
}
</style>
<body ononline="onlineFn()" onoffline="offlineFn()">
<h1>HTML onoffline/ononline Event Attribute Demo</h1>
<p style="color:#db133a;">Try to disable/enable your network.</p>
<div class="show"></div>
<script>
function onlineFn() {
alert("Hey! You are online");
}
function offlineFn() {
alert("Hey! You are offline");
}
</script>
</body>
</html>输出
现在尝试启用/禁用你的网络，观察 onoffline/ononline 事件属性如何运作的−
更新于: 27-Sep-2019
68 次浏览
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