JavaScript Array.from() 方法
javascriptweb developmentfront end technology更新于 2024/7/13 12:13:00
Array.from() 从给定的数组实例创建一个新的数组对象。
以下是数组 from() 函数的代码 −
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 Array from() example</h1>
<div class="sample"></div>
<button class="btn">点击此处</button>
<h3>Click on the above button to create the array from given string</h3>
<script>
let fillEle = document.querySelector(".sample");
let arr = "HelloWorld";
fillEle.innerHTML = arr;
document.querySelector(".Btn").addEventListener("click", () => {
fillEle.innerHTML = Array.from(arr);
});
</script>
</body>
</html>
输出
单击“单击此处”按钮后，字符串将转换为数组，如下所示 −
