1、基本选择器(重点) #id:根据元素的 id 属性来获取元素 element:根据元素的名称来获取元素 selector1,selector2:同时获取多个元素 .class:根据元素的 class 属性来获取元素 2、层级选择器(重点) ancetor descendant :选取祖先元素下的所有后代元素(多级) parent > child :选择父元素下的所有子元素(一级) prev...
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】...
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 native getElementsByClassName() function if the ...
九、jQuery selector and selection method 本节深入学习jQuery的选择器语法,以及用来改善和增加选择元素的多个方法。 1、jQuery选择器 选择器语法有三层。第一层是简单的选择器,如"#test","div", "div.note";第二层是用连接符连起来的简单选取器,如:"div.noet>p";第三层是由多个第一层或者第二层选择器用...
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....
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
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 "myCss...
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 ...
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...