Answers:
var div = document.createElement("div");
div.style.width = "100px";
div.style.height = "100px";
div.style.background = "red";
div.style.color = "white";
div.innerHTML = "Hello";
document.getElementById("main").appendChild(div);<body>
<div id="main"></div>
</body>var div = document.createElement("div");
div.style.width = "100px";
div.style.height = "100px";
div.style.background = "red";
div.style.color = "white";
div.innerHTML = "Hello";
document.getElementById("main").appendChild(div);
OR
document.body.appendChild(div);使用父引用而不是document.body。
取决于您的操作方式。纯JavaScript：
var div = document.createElement('div');
div.innerHTML = "my <b>new</b> skill - <large>DOM maniuplation!</large>";
// set style
div.style.color = 'red';
// better to use CSS though - just set class
div.setAttribute('class', 'myclass'); // and make sure myclass has some styles in css
document.body.appendChild(div);使用jquery进行相同的操作非常容易：
$('body')
.append('my DOM manupulation skills dont seem like a big deal when using jquery')
.css('color', 'red').addClass('myclass');干杯!
div因此无法回答问题
虽然这里的其他答案有效，但我注意到您要求一个包含内容的div。所以这是我的版本，带有更多内容。JSFiddle链接位于底部。
JavaScript （带注释）：
// Creating a div element
var divElement = document.createElement("Div");
divElement.id = "divID";
// Styling it
divElement.style.textAlign = "center";
divElement.style.fontWeight = "bold";
divElement.style.fontSize = "smaller";
divElement.style.paddingTop = "15px";
// Adding a paragraph to it
var paragraph = document.createElement("P");
var text = document.createTextNode("Another paragraph, yay! This one will be styled different from the rest since we styled the DIV we specifically created.");
paragraph.appendChild(text);
divElement.appendChild(paragraph);
// Adding a button, cause why not!
var button = document.createElement("Button");
var textForButton = document.createTextNode("Release the alert");
button.appendChild(textForButton);
button.addEventListener("click", function(){
alert("Hi!");
});
divElement.appendChild(button);
// Appending the div element to body
document.getElementsByTagName("body")[0].appendChild(divElement);HTML：
<body>
<h1>Title</h1>
<p>This is a paragraph. Well, kind of.</p>
</body>CSS：
h1 { color: #333333; font-family: 'Bitter', serif; font-size: 50px; font-weight: normal; line-height: 54px; margin: 0 0 54px; }
p { color: #333333; font-family: Georgia, serif; font-size: 18px; line-height: 28px; margin: 0 0 28px; }注意：从Ratal Tomal借用的CSS行
JSFiddle： https ：//jsfiddle.net/Rani_Kheir/erL7aowz/
此解决方案使用jquery库
$('#elementId').append("<div class='classname'>content</div>");这是我要使用的一种解决方案：
var div = '<div id="yourId" class="yourClass" yourAttribute="yourAttributeValue">blah</div>';如果您希望属性和/或属性值基于变量：
var id = "hello";
var classAttr = "class";
var div = '<div id='+id+' '+classAttr+'="world" >Blah</div>';然后，附加到正文：
document.getElementsByTagName("body").innerHTML = div;非常简单。
[0]时指定getElementsByTagName()。（太短，
您可以这样创建
board.style.cssText = "position:fixed;height:100px;width:100px;background:#ddd;"
document.getElementById("main").appendChild(board);完整的可运行代码段：
var board;
board= document.createElement("div");
board.id = "mainBoard";
board.style.cssText = "position:fixed;height:100px;width:100px;background:#ddd;"
document.getElementById("main").appendChild(board);<body>
<div id="main"></div>
</body>用id名称创建div
var divCreator=function (id){
newElement=document.createElement("div");
newNode=document.body.appendChild(newElement);
newNode.setAttribute("id",id);
}将文本添加到div
var textAdder = function(id, text) {
target = document.getElementById(id)
target.appendChild(document.createTextNode(text));
}测试代码
divCreator("div1");
textAdder("div1", "this is paragraph 1");输出
this is paragraph 1