在CSS 中,有所謂 Selector 的概念,大家應該都看過以下寫法: table a { color: red } #myTable .clsInput { width: 60px; } 以上語法可以一口氣將所有被包在 <table> 中的 <a> 改為藍色,將 <table id="myTable"> 下 class="clsInput" 的元素寬度設為 60px,是不是比起 DOM API 的愚公移山先進...
(Element Selector): 【2】ID选择器(ID Selector): 【3】类选择器(Class Selector) 【4】属性选择器(Attribute Selector): 【5】选择器组合(Multiple Selectors): 【6】后代选择器(Descendant Selector) 【7】子元素选择器(Child Selector): 【8】下一个兄弟元素选择器(Next Adjacent Selector) 【9】...
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...
②. document.getElementsByName('uname')(表单元素) ③. document.getElementsByTagName('div') ④. document.getElementsByClassName('btn') ⑤. document.querySelector('选择器') ⑥. document.querySelectorAll('选择器') 遍历DOM 节点: ①. node.parentNode ②. parent.childNodes、parent.children ③. nod...
基础语法:$(selector).action() 美元符号定义 jQuery 选择符(selector)”查询” 和 “查找” HTML 元素 jQuery 的 action() 执行对元素的操作 实例: $(this).hide() – 隐藏当前元素 $(“p”).hide() – 隐藏所有 <p> 元素 $(“p.test”).hide() – 隐藏所有 class=”test” 的 <p> 元素 ...
class2type.toString, core_hasOwn = class2type.hasOwnProperty, core_trim = core_version.trim, // Define a local copy of jQuery jQuery = function( selector, context ) { // The jQuery object is actually just the init constructor 'enhanced' return new jQuery.fn.init( selector, context, ...
id selector Description:Selects a single element with the given id attribute. version added:1.0jQuery( "#id" ) id:An ID to search for, specified via the id attribute of an element. For id selectors, jQuery uses the JavaScript functiondocument.getElementById(), which is extremely efficient....
This code selects an element with an ID of "myDivId". Since IDs are unique, this expression always selects either zero or one elements depending upon whether or not an element with the specified ID exists. 1 $("#myDivId"); This code selects an element with a class of "myCssClass...
The #id selector selects the element with the specific id.The id refers to the id attribute of an HTML element.Note: The id attribute must be unique within a document.Note: Do not start an id attribute with a number. It may cause problems in some browsers....
linkSelecting Elements by ID 1 $("#myId");// Note IDs must be unique per page. linkSelecting Elements by Class Name 1 $(".myClass"); linkSelecting Elements by Attribute 1 $("input[name='first_name']"); linkSelecting Elements by Compound CSS Selector ...