Method: 1. Use slideUp(), the syntax "$("element").slideUp(milliseconds)" will hide the selected element in a sliding manner; 2. Use slideToggle(), the syntax "$( "Element").slideToggle(milliseconds)", when the element is in the display state, the element will be hidden in a sliding manner.
The operating environment of this tutorial: windows7 system, jquery1.10.2 version, Dell G3 computer.
jquery method to realize the element sliding up and disappearing
1. Use slideUp()
The slideUp() method hides the selected elements in a sliding manner.
Note: Hidden elements will not be fully displayed (no longer affect the layout of the page).
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <script src="js/jquery-1.10.2.min.js"></script> <script> $(document).ready(function() { $(".btn1").click(function() { $("p").slideUp(1000); }); }); </script> </head> <body> <p>这是一个段落。</p> <button class="btn1">上滑隐藏元素</button> </body> </html>
2. Use slideToggle()
slideToggle() will check the visible state of the selected element. If an element is If an element is visible, the element will be hidden by sliding up; if an element is hidden, the element will be displayed by sliding down.
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <script ></script> <script> $(document).ready(function() { $(".btn1").click(function() { $("p").slideToggle(1000); }); }); </script> </head> <body> <p>这是一个段落。</p> <button class="btn1">滑动的隐藏/显示元素</button> </body> </html>
[Recommended learning: jQuery video tutorial, web front-end video】
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实现方法:1、用“$("img").delay(毫秒数).fadeOut()”语句,delay()设置延迟秒数;2、用“setTimeout(function(){ $("img").hide(); },毫秒值);”语句,通过定时器来延迟。

修改方法:1、用css()设置新样式,语法“$(元素).css("min-height","新值")”;2、用attr(),通过设置style属性来添加新样式,语法“$(元素).attr("style","min-height:新值")”。

区别:1、axios是一个异步请求框架,用于封装底层的XMLHttpRequest,而jquery是一个JavaScript库,只是顺便封装了dom操作;2、axios是基于承诺对象的,可以用承诺对象中的方法,而jquery不基于承诺对象。

增加元素的方法:1、用append(),语法“$("body").append(新元素)”,可向body内部的末尾处增加元素;2、用prepend(),语法“$("body").prepend(新元素)”,可向body内部的开始处增加元素。

在jquery中,apply()方法用于改变this指向,使用另一个对象替换当前对象,是应用某一对象的一个方法,语法为“apply(thisobj,[argarray])”;参数argarray表示的是以数组的形式进行传递。

删除方法:1、用empty(),语法“$("div").empty();”,可删除所有子节点和内容;2、用children()和remove(),语法“$("div").children().remove();”,只删除子元素,不删除内容。

on()方法有4个参数:1、第一个参数不可省略,规定要从被选元素添加的一个或多个事件或命名空间;2、第二个参数可省略,规定元素的事件处理程序;3、第三个参数可省略,规定传递到函数的额外数据;4、第四个参数可省略,规定当事件发生时运行的函数。

去掉方法:1、用“$(selector).removeAttr("readonly")”语句删除readonly属性;2、用“$(selector).attr("readonly",false)”将readonly属性的值设置为false。


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