The example of this article analyzes the usage of the function name.length attribute in Javascript. Share it with everyone for your reference, the details are as follows:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title></title> <script type="text/javascript"> //函数名.length表示的是函数定义的参数的个数,这里sayHi函数定义了一个参数a,所以输出1 //和arguments.length不一样,arguments.length指的是外部调用时传入的形参的个数 window.onload = function () { sayHi(); } function sayHi(a) { alert(sayHi.length); //打印出1 } alert(sayHi.length); //也是打印出1 </script> </head> <body> </body> </html>
I hope this article will be helpful to everyone’s JavaScript programming design.
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