//单个情况

str1 = "{id:"+ id+",name:"+ name+"}"； eval("(" + str1+ ")");

//多个情况

str2  = "{[{...},{...}]}"   eval(str2);

 location.search取每一个参数的值 转换json格式
//?pname=14 - 解脫&author='aaa'&copyright='bbb'&info='cccc''

代码 
    var arrurlvalue="";
    var urlvalue ;
    var url = location.search;
    url = url.substring(1,url.length);
    var arrurl = url.split('&');
    arrurlvalue = "{";
    for(var i=0;i<arrurl.length;i++){
        if(i == arrurl.length-1)
            arrurlvalue +=  arrurl[i].split('=')[0]  +":"+ "'"+ arrurl[i].split('=')[1] +"'";
       else   
            arrurlvalue +=  arrurl[i].split('=')[0]  +":"+ "'"+ arrurl[i].split('=')[1] +"'"+",";
        
    }
    //{pname:'14 - 解脫',pauthor:'aaa',pcopyright:'bbb',pinfo:'cccc'}
    arrurlvalue += "}";
    var p = eval("(" + arrurlvalue+ ")");
    alert(p.pname);

 

[
 [
   {"id":0,"width":85.608,"top":0,"left":0,"oy":0,"name":"左侧窗口","ox":0,"height":240,"ms":0,"ex":0,"zindex":1200,"cursor":"","mt":0},
   {"id":1,"width":96,"top":0,"left":144,"oy":0,"name":"右上窗口","ox":0,"height":120,"ms":0,"ex":0,"zindex":1201,"cursor":"","mt":0},
   {"id":2,"width":96,"top":120,"left":144,"oy":0,"name":"右下窗口","ox":0,"height":120,"ms":0,"ex":0,"zindex":1202,"cursor":"","mt":0}
 ],
 [
   {"id":0,"width":240,"top":0,"left":0,"oy":0,"name":"上窗口","ox":0,"height":230.4,"ms":0,"ex":0,"zindex":1200,"cursor":"","mt":0},
   {"id":1,"width":240,"top":230.4,"left":0,"oy":0,"name":"字幕窗口","ox":0,"height":9.6,"ms":0,"ex":0,"zindex":1201,"cursor":"","mt":0}
 ],
 [
   {"id":0,"width":240,"top":0,"left":0,"oy":0,"name":"满屏","ox":0,"height":240,"ms":0,"ex":0,"zindex":1200,"cursor":"","mt":0}
 ]
]

{[
{"i":1,"id":355,"bg":"","bgi":"","isdel":"0","tv":5,"d":3600,"p":0,"s":"","t":"音视","ds":"01:00:00","n":"Test File #9"}, 
{"i":1,"id":354,"bg":"","bgi":"","isdel":"0","tv":3,"d":3600,"p":100,"s":"","t":"图片","ds":"01:00:00","n":"q_2"}, 
{"i":2,"id":356,"bg":"","bgi":"","isdel":"0","tv":-3,"d":4027,"p":0,"s":"888","t":"直播","ds":"01:07:07","n":"888"}
]}


[{
  persons:
  [{name:"jordan",sex:"m",age:"40"},
   {name:"bryant",sex:"m",age:"28"},
   {name:"McGrady",sex:"m",age:"27"}
  ]
}]
有[    UserList[0].pname

var UserList = [
{pname:'14 - 解脫',pauthor:'aaa',pcopyright:'bbb',pinfo:'cccc',pduration:272,
    chapter:
    [
      {pc_order:0,pc_duration:240,pc_program_id:533},
      {pc_order:0,pc_duration:272,pc_program_id:533}
    ]
}
];
没有[   UserList.pname   chapter: [{},{}]必须要[

var UserList =
{pname:'14 - 解脫',pauthor:'aaa',pcopyright:'bbb',pinfo:'cccc',pduration:272,
    chapter:
    [
      {pc_order:0,pc_duration:240,pc_program_id:533},
      {pc_order:0,pc_duration:272,pc_program_id:533}
    ]
};