includes()
TypedArray对象的函数接受一个值,并验证此类型的数组是否包含指定的元素。如果数组包含给定元素,则返回true,否则返回false。
其语法如下
typedArray.includes()
<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>"); var contains = int32View.includes(66); if(contains) { document.write("Array contains the specified element"); }else { document.write("Array doesn’t contains the specified element"); } </script> </body> </html>
输出结果
Contents of the typed array: 21,19,65,21,14,66,87,55 Array contains the specified element
<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>"); var contains = int32View.includes(762); if(contains) { document.write("Array contains the specified element"); }else { document.write("Array doesn’t contains the specified element"); } </script> </body> </html>
输出结果
Contents of the typed array: 21,19,65,21,14,66,87,55 Array doesn’t contains the specified element