Creation and insertion of jquery elements
doing exercises on the creation and insertion of dynamic elements while watching the sharp jQuery
<ul id="ul">
<li title=""></li>
<li title=""></li>
<li title=""></li>
</ul>
$("html"); // dom
//li
var $li_1 = $("<li></li>");
//li
var $li_2 = $("<li><li>");
// li
var $li_3 = $("<li tltle = ""><li>");
//
// append()
$ul.append($li_1).append($li_2).append($li_3);
as a result, it is found that the empty li tag is repeated many times
unclosed tags
after $li_2 and $li_3 are not closed
insert can be written together $ul.append ($li_1,$li_2,$li_3)
//li
var $li_2 = $("<li><li>"); //<li></li>
double tag elements with a slash at the end, such as < / div >
unclosed tags will be recognized as two elements in high-version browsers, such as
banana will be recognized as
banana after actual compilation.
Banana should be Banana . Notice the closing tag. The
should be followed by .
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The proportional width of the echarts graph is inconsistent.
The horizontal coordinates of echarts are not specifically marked, and the X coordinates do not have a grid to indicate. Here is a figure that specifies .
js
* *
createChartSix() {
this.$http
.get(this.$api.dataChart)
.then(rsp => {
...
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Using node to build video streaming server
sincerely ask for advice:
< hr >
I want to use node as the background to build a video streaming server. The front end is similar to Youku VOD. It can record the playback node function, and load the progress bar at any point (starting from the c...
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In the chained promise function, how to determine which promise threw the error
I need to implement in a chained promise function, any function error in the middle terminates the program, and can catch the error function, and then perform different operations according to different error functions. How can the following code be imp...
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Ajax request
I would like to ask what is wrong with this code. Thank you for your answers.
...
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Apply method confusion
is doing a question on Niuke.com. I encounter a problem: to achieve the function callIt, after the call meets the following conditions 1, the returned result is the result after calling fn 2, and the call parameter of fn is all the parameters after th...
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Countdown, click event?
A timing examination system is triggered if the click event is triggered within 5 seconds, and if it is not triggered, the system marks the correct answer at the end of the countdown. How to implement ...
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On the problem of regular matching
description: a regular match is given to the content of an input box, and the matching content is the product activation code. looks like this: "0C31-0B81-BB32-3094-0C31-0B81-BB32-3094 "
Code:
$( -sharplicenseCode ).keyup(function () {
le...
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Custom event, 2 clicks at a time
1. The custom event triggers the click event of .cpcstartrefresh, but triggers 2 click events each time
2. The code is as follows: window.onmessage = function (e) { create an event object,
var myEvent = document.createEvent( Event );
m...
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Problems with Chrome downloading using window.open ()
I configured the MIME type of the file with the amr suffix in the apache configuration as application ms-download, Why it is a garbled page when opening a file in amr format using window.open in chrome, while a file in amr format can be successfully dow...
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Multiple choice questions, how to judge whether the chosen answer is the correct answer?
I got a set of data, which is to choose the type of question. How can I tell if I have chosen the right one
answera: "Olympic Games " answerb: "Asian Games " answerc: "Paralympic Games " answerd: "University Games " id: "1772 " question: "f...
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Read a number, such as 521, change this number to 0521, and put it into four div, how to achieve?
read a number, such as 521
change this number to 0521
but put it into four div separately, how to realize it?
0 < div > 5 < div > 2 < div > 1 < div >
...
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React projects cannot save store? using redux, data
react projects cannot save store? using redux, data
index.js
ReactDOM.render(
<Provider store={store}>
<Router >
< Provider>, document.getElementById( root ))
registerServiceWorker()
actions
export const SET_USER = ...
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How to find all the 'NA' characters in a HMLT page and replace it with "and invalid"
how to find all the NA characters in a HMLT page and replace it with "and invalid " with native JS ...
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Why not pause after alert, but immediately refresh the address, this alert is written by yourself?
...
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Can I use import and export directly?
suppose there are only a.js and b.js (only two js and nothing else)
b.js export A variable is used for a.js
can you directly use import and export without using packaging and compilation tools such as webpack or babel
can it be achieved with the h...
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The problem of uploading attachments to the mobile version
do the gods have plug-ins for uploading attachments in the mobile version that can also be uploaded more than one? ...
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WeChat Mini Programs login problem
what does the code circled in the following picture mean? ...
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Ask a question about the jquery window object
I look at a html ui project with items such as:
var apiserver = window[ apiserver ];
url = apiserver + "filterUrlController getUrlData";
I searched the whole project and couldn t find the value of window [ apiserver ]. How do you un...
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The vue project introduces particles.js to realize the particle effect, but there is a problem when switching pages?
In the vue-cli project, I directly introduced the particls library into index.html, and the related files are placed in the static directory .
<div id="particles-js">< div>
<script type="text javascript" src="s...
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Js performs asynchronous operations in a loop and then adds each asynchronous result to an array. How can this array be used outside the loop?
How does the code return only the result after the last asynchronous operation in the for loop is completed as shown in the figure? Please stop by and give me a hand.
...
