js的Number类型

xiaoxiao2021-02-27 187

<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> </head> <body> <script> /* Number对象如何创建：方式一：var n1=new Number(5); 创建对象方式二: var n2=Number(4); //调用函数Number()并且赋值 */ var n1=new Number(5); var n2=Number(4); alert(n1+"==33333=="+n2); alert("====="+n1.valueOf()); /*取值*/ alert(typeof(n1)+"===="+typeof(n2)); </script> </body> </html>

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