1.通过id获取 document.getElementById(“id”) 2.通过name获取 document.getElementsByName(“Name”) 返回的是list 3.通过标签名选取元素 document.getElementsByTagName(“tag”) 4.通过CLASS类选取元素 document.getElementsByClassName(“class
var elements=document.getElementByTagName(tagName""); jQuery对其包装后的简化方法是 var $elements=$("tagName"); 3、类选择器 JavaScript没有提供内置的类选择方法,我们能够自己为其拓展一个。代码例如以下: document.getElementsByClassName=function(className){ var el=[], _el=document.getElementsByTagName(...
var elements=document.getElementByTagName(tagName""); jQuery对其包装后的简化方法是 var $elements=$("tagName"); 3、类选择器 JavaScript没有提供内置的类选择方法,我们可以自己为其拓展一个,代码如下: document.getElementsByClassName=function(className){ var el=[], _el=document.getElementsByTagName("*"...
// 通过 id 获取vardiv1=document.getElementById('div1')// 元素// 通过 tagname 获取vardivList=document.getElementsByTagName('div')// 集合console.log(divList.length)console.log(divList[0])// 通过 class 获取varcontainerList=document.getElementsByClassName('container')// 集合varparentDOM=document...
class selector Description:Selects all elements with the given class. version added:1.0jQuery( ".class" ) class:A class to search for. An element can have multiple classes; only one of them must match. For class selectors, jQuery uses JavaScript's nativegetElementsByClassName()function if the...
...mabeyClass(也许是个类选择器),那么咱们就通过getElementsByClass来取它; maybeNot(没有这个变量的),那么就通过getElementByTagName...(但是jQuery不是这么写的,至少不全是,因为jQuery还有一些自己的伪类,zepto是没有的); 关于那个slice.call()只是为了将里边返回的dom对象放在一个数组里罢了。
var arr = jQuery.makeArray(document.getElementsByTagName("div")); arr.reverse(); // use an Array method on list of dom elements $(arr).appendTo(document.body); jQuery.map( array, callback ) 使用某个方法修改一个数组中的项,然后返回一个新的数组 ...
Selects all direct child elements specified by “child” of elements specified by “parent”.Traversing > Tree Traversal .children() Get the children of each element in the set of matched elements, optionally filtered by a selector.Selectors > Basic Class Selector (“.class”) ...
.class: find elements by class name, e.g. .masthead [attribute]: elements with attribute, e.g. [href] [^attr]: elements with an attribute name prefix, e.g. [^data-] finds elements with HTML5 dataset attributes [attr=value]: elements with attribute value, e.g. [width=500] (also ...
.position()– Get an object with position information for the first element in the selection, relative to its first positioned ancestor.This is a getter only. .val()– Get or set the value of form elements. Changing things about elements is trivial, but remember that the change will affect...