var title = 'blog';(function(title){  $.post(url, {}, function(data){    alert(title);//output single's blog, 我们期望的是输出 blog  })}(title))title = "single's blog";(function(title){  $.post(url, {}, function(data){    alert(title);//output single's blog  })}(title))for(var i=0;i<3;i++){   ((function(i){        $.get('/?'+i, {}, function(data){            alert(i); // alert(1) alert(2) alert(3)        })    }(i))}