Reset
Set all DIVs on the page Element's background color|
Set the background color of the second DIV|
Set the background color of DIVs except the second DIV|
Set the name attribute value to Elements starting with DIV|
Set the name attribute value Elements ending with ly|
Set the element whose name attribute value contains th|
Comprehensive application
1.$("selector [Attribute]")--Note, the following is directly abbreviated as [Attribute]
Description: Get the set of elements with the Attribute attribute in the set of elements selected by the selector. It should be relatively simple, so I won’t explain it in detail here. If you don’t understand, please post it below.
Return value: Array(Element);
2.[attribute=value]
Return value: Array(Element);
3.[attribute!=value]
Description: Get the set of elements whose Attribute attribute value is not equal to Value in the set of elements selected by the selector.
Return value: Array(Element);
4.[attribute^=value]
Description: Get the set of elements whose Attribute attribute value starts with Value in the set of elements selected by the selector. Equivalent to the regular specification ^^
Return value: Array(Element);
5.[attribute$=value]
Description: Get the Attribute attribute value ending with Value in the set of elements selected by the selector Collection of elements. Equivalent to the regular specification ^^
Return value: Array(Element);
6.[attribute*=value]
Description: Get the elements whose Attribute attribute value contains Value in the set of elements selected by the selector. gather.
Return value: Array(Element);
7.[selector1][selector2][selectorN]
Description: Same as the comprehensive application of basic selectors in Chapter 1, this method is also the first 6 The comprehensive version, just like in my example $("div[id][name !=Fifthly][name *= i]") is to take all div elements that have ID attributes&&name attributes!=Fifthly&&name attributes that contain the character i A collection of DIV elements. If you try it with my example, you will be able to clearly understand and see the effect, haha. It should be useful to make good use of this method^^
Return value: Array(Element);

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。

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。

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。


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