json怎样实现动态添加

Question

var list = [{"TypeId":0,"LayoutId":LayoutId,"CoordinateX":10,"CoordinateY":10,"Width":10,"Height":10}
];if(条件一)
{
 list 添加一个 {"TypeId":1,"LayoutId":LayoutId,"CoordinateX":20,"CoordinateY":20,"Width":20,"Height":20}
变成 
 list = [{"TypeId":0,"LayoutId":LayoutId,"CoordinateX":10,"CoordinateY":10,"Width":10,"Height":10},{"TypeId":1,"LayoutId":LayoutId,"CoordinateX":20,"CoordinateY":20,"Width":20,"Height":20}
];类似于stringbuild的append
能不能实现
}

Answer 1

list.push({"TypeId":1,"LayoutId":LayoutId,"CoordinateX":20,"CoordinateY":20,"Width":20,"Height":20}
)  不知可否

Answer 2

if(条件一）
list.push(...);你那个json就是一个数组 对象啊，可以随便操作的

Answer 3

这不是json添加，这是数组添加

Answer 4

把json存在数组中 再push就可以

Answer 5

//你那list是Array调用push方法即可
var list = [{"TypeId":0,"LayoutId":LayoutId,"CoordinateX":10,"CoordinateY":10,"Width":10,"Height":10}
];if(条件一)
{
 list.push({"TypeId":1,"LayoutId":LayoutId,"CoordinateX":20,"CoordinateY":20,"Width":20,"Height":20});
/*变成 
 list = [{"TypeId":0,"LayoutId":LayoutId,"CoordinateX":10,"CoordinateY":10,"Width":10,"Height":10},{"TypeId":1,"LayoutId":LayoutId,"CoordinateX":20,"CoordinateY":20,"Width":20,"Height":20}
];*/
alert(list.join('') + eval(list.join('')));//其实不用eval，本来就是array的
/*类似于stringbuild的append
能不能实现*/
}

Answer 6

 var list=[];
             
            if(dp("txtVideoWidth").value!="")
            {alert("1"); 
              list.push({"TypeId":0,"LayoutId":LayoutId,"CoordinateX":20,"CoordinateY":20,"Width":20,"Height":20});
              alert(eval(list.join('')));
            }
            if(dp("txtPicWidth1").value!="")
            {alert("2");
              list.push({"TypeId":1,"LayoutId":LayoutId,"CoordinateX":20,"CoordinateY":20,"Width":20,"Height":20});
            }
             if(dp("txtPicWidth2").value!="")
            {alert("3");
             list.push({"TypeId":1,"LayoutId":LayoutId,"CoordinateX":30,"CoordinateY":30,"Width":30,"Height":30});
            }
             if(dp("txtPicWidth3").value!="")
            { alert("4");
             list.push({"TypeId":1,"LayoutId":LayoutId,"CoordinateX":40,"CoordinateY":40,"Width":40,"Height":40});
            }
            if(dp("txtWidth").value!="")
            {alert("5");
              list.push({"TypeId":2,"LayoutId":LayoutId,"CoordinateX":40,"CoordinateY":40,"Width":40,"Height":40});
            }
alert("6");
            alert(list.join('') +"ppp"+ eval(list.join('')));//这里显示不出来任何数据。最后执行到alert("6");

Answer 7

到alert("2");
就执行不下去了

Answer 8

var list=[];
             
            if(dp("txtVideoWidth").value!="")
            {alert("1"); 
              list.push({"TypeId":0,"LayoutId":LayoutId,"CoordinateX":20,"CoordinateY":20,"Width":20,"Height":20});
             
            }
            if(dp("txtPicWidth1").value!="")
            {alert("2");
              list.push({"TypeId":1,"LayoutId":LayoutId,"CoordinateX":20,"CoordinateY":20,"Width":20,"Height":20});
            }
             if(dp("txtPicWidth2").value!="")
            {alert("3");
             list.push({"TypeId":1,"LayoutId":LayoutId,"CoordinateX":30,"CoordinateY":30,"Width":30,"Height":30});
            }
             if(dp("txtPicWidth3").value!="")
            { alert("4");
             list.push({"TypeId":1,"LayoutId":LayoutId,"CoordinateX":40,"CoordinateY":40,"Width":40,"Height":40});
            }
            if(dp("txtWidth").value!="")
            {alert("5");
              list.push({"TypeId":2,"LayoutId":LayoutId,"CoordinateX":40,"CoordinateY":40,"Width":40,"Height":40});
            }
alert("6");
            alert(list.join('') +"ppp"+ eval(list.join('')));//这里显示不出来任何数据。最后执行到alert("6");