setTimeout没有污染全局命名空间？

Question

考虑以下javascript:

$(function(){
  var private_function = function(){
    alert("private_function!");
  }

  setTimeout("private_function();", 1000);  

});

这会产生错误"private_function not defined".

有没有办法在javascript中推迟执行私有/匿名函数而不污染全局命名空间/通过全局模块公开它？

谢谢你的任何建议.

Answer 1

$(function(){
  var private_function = function(){
    alert("private_function!");
  }

  setTimeout(private_function, 1000);  

});

要么

$(function(){
  var private_function = function(){
    alert("private_function!");
  }

  setTimeout(function(){
    private_function(); // with this method you can also pass some arguments
  }, 1000);  

});