JS技巧 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
    <script type="text/javascript">

    var i=10;
    while(i--)
    {
     alert(i);
    }

    var a=true;
    var b = false;
  
    
        var obj = { name: 'xiaoxiao',  m1: function () { alert('m1'); } }
        obj.m1;
        alert(JSON.stringify(obj));    
        var i = 1;  
        i = +i;alert(i);
        var test =''|| false; alert(test);
        alert(test);
     
        var array = [1,2,3];
        len = array.length;
        i = i ? i < 0 ? Math.max(0, len + i) : i : 0;
        alert(i);

        var results = null;

        var ret = results || [];
     
        alert(ret.length);
      
        for (; i < 10; ) {
            alert(i);
            i++;
        }

        var ja = function () { alert('this is ja'); }

        ja.c = function () { alert('acccccc'); };
        ja.pg = function () { alert('this is pg'); abc = 'this is abc00001'; return this.pg; };
        //        ja.pg() = function () { alert('this is pg()'); }
        //ja.pg().ac = function () { alert("this is ac"); return '01'; }
        ja.pg().title = 'this is title';
        alert(ja.pg().title);
        alert(ja.pg.title+'static');
//        alert(ja.pg['a01']);
//        alert(ja.pg()['a01']);
//        ja.pg().c = function () { alert('this is c1'); }
//        ja.pg().c();
//        ja.pg().c = "ccc1";
//        ja.pg()['ac'] = 'this is ac';
//        alert(ja.pg()['ac']);
//       alert( ja.pg().c);
    </script>
</head>
<body>

</body>
</html>

 

posted @ 2016-06-21 10:11  甜菜波波  阅读(186)  评论(0)    收藏  举报