How to remove click events through jquery: first add a button in html; then use jquery to add a click event to the button; finally use jquery's unbind method to remove the event.
The operating environment of this tutorial: Windows 7 system, jquery version 3.2.1. This method is suitable for all brands of computers.
How to remove click events through jquery:
1. We first add a button to the html.
#2. Then use jquery to add a click event to the button.
3. To delete the added event, we just use jquery’s unbind method to remove the event. Add: unbind()
to the code. method call.
4. Of course, all the events of the button are removed above. If your button is bound to multiple events, such as click event, mouseover event, etc., As long as we remove the click event, we can write that "click" is what we want to remove in the first parameter of the method.
5. To run the page, we are clicking the button on the page.
#6. After clicking, you can see an alert box popping up, indicating that an event has been added.
7. When we close the pop-up box and click the button again, we will find that the prompt box no longer pops up because the event has been removed.
Related free learning recommendations: javascript (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。

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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