4.8.2.JSDOM对象控制HTML元素详解

水深无声 2023-08-17 17:17 117阅读 0赞

<!DOCTYPE html>
    <html>
    <head>
        <meta charset="utf-8" />
        <title>DOM对象控制HTML</title>
    </head>
    <body>
        <p name="pn">hello</p>
        <p name="pn">hello</p>
        <p name="pn">hello</p>
        <a id="aid" title="得到了a标签的属性">hello</a>
        <a id="aid2">aid2</a>
        <ul><li>1</li><li>2</li><li>3</li></ul>
        <div id="div">
            <p id="pid">div的P元素</p>
        </div>
        <script>
            function getName() {
                var count = document.getElementsByName("pn");
                alert(count.length);
                var p = count[2];
                p.innerHTML = "World";
            }
            function getAttr() {
                var anode = document.getElementById("aid");
                var attr = anode.getAttribute("id");
                alert(attr);
            }
            function setAttr() {
                var anode = document.getElementById("aid2");
                anode.setAttribute("title", "动态设置a的title属性");
                var attr = anode.getAttribute("title");
                alert(attr);
            }
            function getChildNode() {
                var childnode = document.getElementsByTagName("ul")[0].childNodes;
                alert(childnode.length);
                alert(childnode[0].nodeType)
            }
            function getParentNode() {
                var div = document.getElementById("pid");
                alert(div.parentNode.nodeName);
            }
            function createNode() {
                var body = document.body;
                var input = document.createElement("input");
                input.type = "button";
                input.value = "按钮";
                body.appendChild(input);
            }
            function addNode() {
                var div = document.getElementById("div");
                var node = document.getElementById("pid");
                var newnode = document.createElement("p");
                newnode.innerHTML = "动态添加体格p元素";
                div.insertBefore(newnode, node);
            }
            function removeNode() {
                var div = document.getElementById("div");
                var p = div.removeChild(div.childNodes[1]);
            }
            function getSize() {
                var width = document.body.offsetWidth || document.documentElement.offsetWidth;
                var height = document.body.offsetHeight;
                alert(width + " " + height);
            }
            getSize();
        </script>
    </body>
    </html>

转载于:https://www.cnblogs.com/kikyoqiang/p/11223313.html