JavaScript 中的"new"关键字是什么?
javascriptweb developmentfront end technology更新于 2024/8/4 13:27:00
JavaScript 中的 new 关键字是 new 运算符。它创建用户定义对象类型的实例。
语法如下:
new constructor[([arguments])]
示例
让我们看一个例子来了解 new 运算符的用法:
<!DOCTYPE html>
<html>
<body>
<p id = "test"></p>
<script>
var dept = new Object();
dept.employee = "Amit";
dept.department = "Technical";
dept.technology ="Java";
document.getElementById("test").innerHTML =
dept.employee + " is working on " + dept.technology + " technology.";
</script>
</body>
</html>
