#1 element.children The first way to get the child elements is with the element.children. If you want to check out what kind of properties the DOM Element Object has for you, check it onW3schools. That is btw one of my favorite websites to check JavaScript example’s & documentation. J...
To get the first child node of an HTML element, you can use the firstChild property. This property returns a node's first child, as a Node object. Let us say you have the following HTML code snippet: JavaScript Node Java Ruby Rust The following example selects the first element b...
children; c[1].style.backgroundColor = "yellow"; 复制尝试一下 获取元素的第三个元素的文本: var c = document.getElementById("mySelect").children[2].text; 复制尝试一下 循环遍历的所有子项并将其背景颜色更改为红色: var c = document.body.children; var i; for (i = 0; i < c...
constfirstPara=document.getElementById('firstPara');console.log(firstPara.children[0]); Output: "Hello World!" When you run the above code in any browser, the console of the browser will display"Hello World!". This is because this property returns only DOM elements of the calling node....
Element继承了Node类,也就是说Element是Node多种类型中的一种,即当NodeType为1时Node即为ElementNode,另外Element扩展了Node,Element拥有id、class、children等属性。 以上就是Element跟Node的区别。 那么用document.getElementById("xxx")取到的是Node还是Element呢?我们来测试一下: ...
if (c.indexOf(" " + needle + " ") != -1) return NodeFilter.FILTER_ACCEPT; } return NodeFilter.FILTER_SKIP; } var treeWalker = document.createTreeWalker(document.documentElement, NodeFilter.SHOW_ELEMENT, acceptNode, true); var outArray = new Array(); ...
document.getElementById("contain") if(ps.children) { var oFirst= ps.firstElementChild; oFirsta = ps.children[0];//children是一种很好的兼容写法 alert(oFirst===oFirsta); var oLast = ps.lastElementChild; oLasta = ps.children[ps.children.length-1]; alert(oLast===oLasta); var oNext...
您可以测试是否option使用 选择了一个元素.select,因此您可以遍历所有选项并获取所选元素的值,如下所示:function getSelectedValue(dropDownId) { var options = document.getElementById(dropDownId).children; for (option of options) { if (optio...
const siblings = node => Array .from(node.parentNode.children) .filter(sibling => sibling !== node) const cousins = node => siblings(node.parentNode) .reduce((children, element) => { // Get the children of the current element const currentChildren = Array.from(element.children) // .....
AdvertisementsParentNode.childElementCount ParentNode.childElementCountreturns the number of children of this ParentNode which are elements. The property is implemented both by document and element of the DOM. To determine the child elements, we can useParentNode.childrenproperty. ...