$("p").each(function(index){...}): 遍历所有的<p>元素。 $(this).text("这是第 " + (index + 1) + " 个段落。"): 修改当前遍历到的<p>元素的内容,将其设置为“这是第X个段落。”,其中X是当前元素的索引加1。5
🔍 遍历和筛选 遍历:.each(function(index, element) {}) 筛选:.filter(), .not()📚 插件使用 利用社区丰富的插件扩展jQuery功能🛡 性能优化 减少DOM操作 利用事件委托 选择合适的选择器📈 学习资源 jQuery官方文档:详尽的API和示例 W3Schools:jQuery教程和实例 Stack Overflow:社区问答,解决实际问题0 0 ...
.hover(functionName1, functionName2) jQuery(".post") .hover(function(){//code}); 适用于mouseenter/mouseleave事件类型,为所选元素绑定两个函数,分别在mouseenter和mouseleave时执行。 .toggle(functionName1, functionName2, functionName3, etc) jQuery(".post") .toggle(function(){//code}); 适用于c...
function validateForm() { $(".validate:text").each(function(){ if ($(this).val()=="") // We'll loop through each textfield on the page with a class of "validate" // and if they are blank, we will put text in the immediately afterwards // with the error message. $(this...
// inline function here -- this is analogous with the anonymous classes in Java. // You can either call a separate function, or write an inline function like this. var increment = 1; $("p").each(function(){ // now add a paragraph count in front of each of them. Notice how we ...
清单10. each 循环 // Will loop through each tag on the page. Notice the use of the // inline function here -- this is analogous with the anonymous classes in Java. // You can either call a separate function, or write an inline function like this. var ...
Examples in Each Chapter Our "Try it Yourself" editor makes it easy to learn jQuery. You can edit code and view the result in your browser: Example $(document).ready(function(){ $("p").click(function(){ $(this).hide(); }); ...
$(document).ready(function(){varitems=["Item 1","Item 2","Item 3"];var$list=$("");$.each(items,function(index,item){var$li=$("").text(item);$list.prepend($li);});$("#myList").append($list);}); 1. 2. 3. 4
« W3Schools Home Next Chapter » jQueryjQuery is a JavaScript Library.jQuery greatly simplifies JavaScript programming.jQuery is easy to learn."Try it yourself" Examples in Each ChapterWith our online editor, you can edit the code, and click on a button to view the result....
jQuery提供了一个便捷的方法$.each()用于遍历数组,并将每个元素添加到列表中。 以下是一个示例数组: vararray=["apple","banana","orange","grape"]; 1. 我们可以使用$.each()方法将该数组转换成一个有序列表。 varul=$("");// 创建一个空的有序列表$.each(array,function(index,value){varli=$(""...