补: .innerHTML只能获得封闭标签的内容 表单元素的值只能用.value
words.innerHTML= "hello word!"; box.appendChild(words);</script> 2、出现报错信息 box.appendChild is not a function 3、解决办法 let box = document.getElementsByClassName("box")[0]; 4、总结原因 使用document.getElementsByClassName() 获取节点,返回的是一个包含了所有指定类名的子元素的类数组对象。
address:"中国香港"};console.log(user.age);//访问对象中的属性,未定义vari;console.log(i);//变量未赋值functionf(n1){console.log(n1);}varresult=f();//参数未赋值console.log(result);//当函数没有返回值时为undefined</script></body></html>...
/*简而言之就是是否为原生HTML或只是普通文本,innerHTML的时候为true,textContent的时候为false*/ this.raw = false /*静态节点标志*/ this.isStatic = false /*是否作为跟节点插入*/ this.isRootInsert = true /*是否为注释节点*/ this.isComment = false /*是否为克隆节点*/ this.isCloned = false /*...
innerHTML = "This is a new paragraph element."; // 获取容器元素并将新元素添加进去 var container = document.getElementById("container"); container.appendChild(newParagraph); </script> </body> </html> 在上述示例中,我们首先在HTML中创建了一个空的<div>元素,并为其设置了id属性为"container",...
Add a click event to the document: document.addEventListener("click", myFunction); function myFunction() { document.getElementById("demo").innerHTML = "Hello World"; } Try it Yourself » Simpler syntax: document.addEventListener("click", function(){ document.getElementById("demo").innerHT...
对于HTML 文档来说,document对象一般有两个子节点。第一个子节点是document.doctype,指向<DOCTYPE>节点,即文档类型(Document Type Declaration,简写DTD)节点。HTML 的文档类型节点,一般写成<!DOCTYPE html>。如果网页没有声明 DTD,该属性返回null。 vardoctype =docu...
Dominateis a Python library for creating and manipulating HTML documents using an elegant DOM API. It allows you to write HTML pages in pure Python very concisely, which eliminates the need to learn another template language, and lets you take advantage of the more powerful features of Python....
但是innerHTML不是这么看的。 The innerHTML property takes a much simpler view. This is how it sees the markup inside “testdiv” window.onload = function() { var testdiv = document.getElementById("testdiv"); alert(testdiv.innerHTML); ...
document.getElementById(id).onclick = function(){code}Adding event handler code to an onclick event Finding HTML Objects The first HTML DOM Level 1 (1998), defined 11 HTML objects, object collections, and properties. These are still valid in HTML5. ...