In jquery, you can use the attr() method to modify the name attribute value of the input. This method is used to set or return the attribute value of the selected element. The syntax is "input element object.attr('name', Modified name attribute value)".
The operating environment of this tutorial: windows10 system, jquery3.2.1 version, Dell G3 computer.
How to modify the name of input in jquery
In jquery, you can modify the name attribute value of input by obtaining the input object and using the attr() method.
Create a new html file, named test.html, to explain how jquery modifies the input name. In the p tag, use the input tag to create a text box and set its name attribute value to user.
Set the id of the input tag to myinput, which is mainly used to obtain the input object through this id below. Use the button tag to create a button with the button name "Modify name attribute". Bind the onclick click event to the button button. When the button is clicked, the editname() function is executed.
Create the editname() function. Within the function, obtain the input object through id(myinput), and use the attr() method to change the name attribute to username. The code is as follows:
Open the test.html file in the browser, click the button to view the source code.
After clicking the button:
Summary:
1. Create a test.html file .
2. In the file, in the p tag, use the input tag to create a text box, set its name attribute value to user, and create a button button to trigger the execution of the js function.
3. Create a function in the js tag. Within the function, obtain the input object and use the attr() method to change the name attribute to username.
Notes
attr() method not only modifies the name attribute value, but also modifies the attribute value of the element.
Recommended related video tutorials: jQuery video tutorial
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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。

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。

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。

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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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