JavaScript ArrayBuffer.byteLength 属性
javascriptfront end technologyobject oriented programming
byteLength 属性返回 ArrayBuffer 的长度(以字节为单位)。以下是 ArrayBuffer.byteLength 属性的代码 −
示例
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
body {
font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}
.sample {
font-size: 20px;
font-weight: 500;
}
</style>
</head>
<body>
<h1>JavaScript ArrayBuffer.byteLength property</h1>
<div class="sample"></div>
<button class="btn">点击此处</button>
<h3>Click on the above button to see the array buffer size</h3>
<script>
let fillEle = document.querySelector(".sample");
var buffer = new ArrayBuffer(8);
var view1 = new DataView(buffer);
view1.setInt16(0, 0x2721);
fillEle.innerHTML = view1.getInt16(0).toString(16);
document.querySelector('.Btn').addEventListener('click',()=>{
fillEle.innerHTML = 'The array buffer size is '+view1.byteLength+' bytes';
})
</script>
</body>
</html>
输出
点击“CLICK HERE”按钮 −
