jQuery Corner is a jQuery plug-in, originally developed by Dave Methvin, but with the assistance of Comrade Malsup, some important improvements were made. The project is now on github. Of course, for convenience, this article will provide the plug-in as an attachment, but if you want to get the latest version, please go to the project's github.
The reason why rounded corners and other styles appear like magic is because the plug-in adds some small strips to the target element. These small strips are the background color, so the human eye only sees rounded corners, but they are actually small. Something covers up the original right angle.
It seems that I am really not a magician. I exposed my background as soon as I got started. Don’t worry, let me add some requirements for this magic:
1. The plug-in is specially written for block elements, so div, p, etc. are applicable; while inline elements are not so lucky. Of course, it does not mean that inline cannot be used at all, but it is more expensive to add corners to span. god. However, normal people would not argue with the rounded corners of span, so just change span to div.
2. Regarding the border-radius function newly added by the plug-in, IE
OK, the basic points have been introduced. Teach everyone how to use it, this is the key point, but it is very simple. The first step is to build a basic HTML web page, DIV layout, and CSS.
<html> <head> <style type="text/css"> div{ width:350px; height:200px; background-color: #6af; } </style> </head> <body> <div></div> </body>

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。

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。

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")”。

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。

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。

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。

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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