<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <title>偏函数的应用</title> </head> <body> <script> var s = "iii"; var t = Object.prototype.toString.call(s); function pian(x) { return function (s) { alert(Object.prototype.toString.call(s) == "[object "+x+"]"); } } pian("String"); var isString = pian("String"); var isArray = pian("Array"); isArray([1,2,3,4,"333"]); // 传两次参数,第一次确定需要判断或者是需要处理哪个类型的函数； // 第二个是真正需要处理的函数; </script> </body> </html>