<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> </head> <body> <script> /*let say=function()
{
console.log("hello world");
}
say();
let fn=say;
fn();
// 将函数作为其他函数的参数
function test(fn) { // let fn = say;
fn();
}*/ function test() { let say=function() { console.log("牛逼"); } return say; } let fn=test(); fn(); //这个可以解析为: function test() { return function() { console.log("牛逼"); }; } let fn=test(); fn(); //好了完成 </script> </body> </html>
JS中函数作为参数和返回值 15
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