標籤：
在學習arguments對象時，碰到的一段code,不是太好理解。原文地址中文（http://www.jb51.net/article/25048.htm）、英文（http://www.sitepoint.com/arguments-a-javascript-oddity/）
想要正確理解，需要把握紅色標註的地方。
1，function.prototype.apply()用法
2.需要明白majorTom在這裡指向了匿名函數function(){return func.apply(null, args.concat(Array.prototype.slice.call(arguments)));}
<!DOCTYPE html><html><head lang="en"> <meta charset="UTF-8"> <title></title> <script> function format(string) { var args = arguments; var pattern = new RegExp("%([1-" + arguments.length + "])", "g"); return String(string).replace(pattern, function(match, index) { return args[index]; }); } function makeFunc() { var args = Array.prototype.slice.call(arguments); var func = args.shift(); return function () { return func.apply(null, args.concat(Array.prototype.slice.call(arguments))); }; } var majorTom = makeFunc(format, "This is Major Tom to ground control. I‘m %1."); console.log(majorTom("stepping through the door")) ;//majorTom是匿名函數的引用】 </script></head><body></body></html>
arguments對象、apply()、匿名函數
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