Inserting a Div Into another Div?

Im creating a web app and would like to know why the following code is not working. It first creates a element which is then added to the body. I then create another Div element which i would like to place inside the first div element that i created.

Im using MooTools classes to create and initialize objects and it works fine but i just cant seem to get the following code to work. The code is inside aninitialize: function() of a class:

this.mainAppDiv = document.createElement("div");
this.mainAppDiv.id = "mainBody";
this.mainAppDiv.style.width = "100%";
this.mainAppDiv.style.height = "80%";
this.mainAppDiv.style.border = "thin red dashed";
document.body.appendChild(this.mainAppDiv); //Inserted the div into <body>
//----------------------------------------------------//
this.mainCanvasDiv = document.createElement("div");
this.mainCanvasDiv.id = "mainCanvas";
this.mainCanvasDiv.style.width = "600px";
this.mainCanvasDiv.style.height = "400px";
this.mainCanvasDiv.style.border = "thin black solid";
document.getElementById(this.mainAppDiv.id).appendChild(this.mainCanvasDiv.id);

As you can see it first creates a div called "mainBody" and then appends it the document.body, This part of the code works fine. The problem comes from then creating the second div and trying to insert that usingdocument.getElementById(this.mainAppDiv.id).i(this.mainCanvasDiv.id);

Can anyone think of a reason the above code does not work?

标签： javascript jquery html dom mootools

3条回答

祖国的老花朵

2楼-- · 2019-06-16 07:34

Instead of:

document.getElementById(this.mainAppDiv.id).appendChild(this.mainCanvasDiv.id);

Just do:

this.mainAppDiv.appendChild(this.mainCanvasDiv);

This way you are appending the mainCanvesDiv directly to the mainAppDiv. There is no need to getElementById if you already have a reference to an element.

0人赞添加讨论(0) 举报

爷的心禁止访问

3楼-- · 2019-06-16 07:53

Do like this:

this.mainAppDiv.appendChild(this.mainCanvasDiv);

0人赞添加讨论(0) 举报

叛逆

4楼-- · 2019-06-16 07:55

why do you use mootools yet revert to vanilla js?

this.mainAppDiv = new Element("div", {
    id: "mainBody",
    styles: {
        width: "100%",
        height: "80%",
        border: "thin red dashed"
    }
});

this.mainCanvasDiv = new Element("div", {
    id: "mainCanvas",
    styles: {
        width: 600,
        height: 400,
        border: "thin black solid"
    }
}).inject(this.mainAppDiv);

this.mainAppDiv.inject(document.body);

0人赞添加讨论(0) 举报

Inserting a Div Into another Div?

采纳回答

编辑标签

举报内容

检举类型

检举原因

检举说明(必填)

打开微信“扫一扫”，打开网页后点击屏幕右上角分享按钮

付费偷看金额在0.1-10元之间