JavaScript中的TypedArray.findIndex()函数
find()
TypedArray的函数接受表示函数名称的字符串值,测试数组中的元素是否通过提供的函数实现的测试,如果是,则返回通过测试的第一个元素的索引,否则返回-1 。
语法
其语法如下
typedArray.findIndex(function_name)
示例
<html><head>
<title>JavaScript Array every Method</title>
</head>
<body>
<script type="text/javascript">
var int32View = new Int32Array([21, 19, 65,21, 14, 66, 87, 55 ]);
document.write("Contents of the typed array: "+int32View);
document.write("<br>");
function testResult(element, index, array) {
var ele = element>35
return ele;
}
result = int32View.findIndex(testResult);
document.write("Result: "+result);
</script>
</body>
</html>
输出结果
Contents of the typed array: 21,19,65,21,14,66,87,55Result: 2
示例
<html><head>
<title>JavaScript Array every Method</title>
</head>
<body>
<script type="text/javascript">
var int32View = new Int32Array([21, 19, 65,21, 14, 66, 87, 55 ]);
document.write("Contents of the typed array: "+int32View);
document.write("<br>");
function testResult(element, index, array) {
var ele = element>100
return ele;
}
result = int32View.findIndex(testResult);
document.write("Result: "+result);
</script>
</body>
</html>
输出结果
Contents of the typed array: 21,19,65,21,14,66,87,55Result: -1
以上是 JavaScript中的TypedArray.findIndex()函数 的全部内容, 来源链接: utcz.com/z/356694.html