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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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How to implement fixed positioning relative to a specified parent element
the traditional position: fixed; is relative to the window, and there are two main points of the problem .
relative to the specified parent element
fixed positioning
encountered the following problems in mobile development. The green box is the...
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Does JS judge multiple clicks on the same button?
as shown in the figure, there are four sort buttons in a table header, and the requirements are as follows: the first click on descending order, the second click on ascending order, and the third click on the default display (no sorting); I would li...
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How to get style attribute values in an inline style
directly above the picture, how to take this top value
...
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How to achieve automatic focus and jump in vue?
as shown in the figure, v-for generates input, in Vue. When the add button is clicked, the cursor automatically focuses on the latest input, window and automatically moves to the appropriate location! ...
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How to realize the undo function of drawing on canvas
the only thing I can think of now is to save the current canvas to an array every time I finish drawing, and then take it out of the array when I undo it ...
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The problems encountered by antd dropdown
import React, {Component} from react ;
import {Menu, Dropdown, Icon} from antd ;
const handleClick = () => {
console.log(this);
};
const menu = (
<Menu
onClick={handleClick}
onSelect={({item, key, selectedKeys}) => {
con...
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WeChat Mini Programs, why, after Wechat authorized to click permission, why can not directly get the avatar information, but also need to click again?
...
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Vue keep-alive cannot cache
the scheduling page clicks the order to enter the order details. When you return to the scheduling page, you will request data rendering again. Now you want to return to the previous page without rendering. cannot be cached using keep-alive, and activa...
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When using jquery.dataTable, the header is not aligned with the content. Please take a look at it.
var t = $( -sharplxu_dr_table ).dataTable({
data: returnData,
language: trans(),
sDom: "top"i ,
"scrollX": true,
paging:true,
pageLength: 10,
autoWidth: true,
d...
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How to zoom the chart drawn by canvas
use canvas to draw a chart, but how to implement an adaptive browser ...
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Optimization of dynamic setting scroll bar in Firefox browser
recently, if you want to make a table, you need to fix the header and display the first two columns, because the table has a large number of columns, and the width of the table is more than 7000 px. then I have to do fixed two-column positioning. Calcul...
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How to use JavaScript or node.js to find the location according to the people in the picture in the video?
how to use JavaScript or node.js to find the location according to the people in the picture in the video?
do you have any packages or some common simple methods?
...
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The communication between Vue2.0 sibling components (or multilevel components) is better with Vuex or EventBus.
through vuex, it seems that you need to create an extra state variable, and then modify the state through component A, while component B listens for changes in the state, thus realizing the transmission of events. But it feels like the value of this sta...
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How does jq get the date and week of the last seven days
jq gets the date and week of the last seven days, for example: ...
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Invalid jump in mpvue child src/app.vue
determine whether the token,success is printed in this app.vue, but the page does not jump. What is the situation ...
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Video track UI for Video processing
< H2 > encounter an image track that needs to be similar to the figure in a project < H2 >
what UI should be used for video tracks like this in the front end, and what common libraries are there
< H1 > Thank you! < H1 >
...
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How to get the value saved in input autocomplete effect
The input tag has an autocomplete effect, so where are the entered values saved? How can I get it? ...
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Datatable paging control modification
By default, the paging control of datatable is like this. Only the document can be found to control whether the first and last pages, numeric buttons, upper and lower pages are displayed. what you need to do now is to change the default display of 1...
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How to get the DOM element under the current position of the mouse, or determine whether there are any elements in the current position.
how do I get the ID, of the DOM element in the current position of the mouse or determine if there is a DOM element in the current position?
the mouse is followed by a picture and is written with the onmousemove method. I don t know if it will affect...
