javascript - react input file

1. There is a hidden input type file element in my page. This element can be obtained through the ref attribute and is named this.inputFile. 2. There is a button on the right side of the head of the page. Click the button to trigger the this, fileInput. .click()3 But the result is that the file sele...

我想大声告诉你 2017-07-05 10:44:09 0  1  992

TP5.0 How to update the variable values ​​in the interface template without refreshing

I am a beginner and want to add a search function to a data list. I just click the search button and use the returned results to directly assign values ​​to the original data list.

 2018-07-12 17:50:56 0  2  1183

php - Asking for advice on the algorithm for distributing materials

Now there is an activity to get materials by answering questions. There are 4 types of materials 1, 2, 3, and 4 in three days. Material 4 is a scarce material. If the player answers the question correctly, a material will be distributed to the player. Material 4 will not appear on the first day, and...

PHPz 2017-05-24 11:33:26 0  2  1221

javascript - Ask: How to delete selected array elements in Vue (when there are multiple selections)?

The data is simulated. When clicking edit, I want to delete the selected elements. That is, if one is selected, one will be deleted. If multiple are selected, multiple will be deleted, so that each element in the array, By default, there is a checked attribute demonstration address html structure {c...

我想大声告诉你 2017-05-19 10:35:09 0  3  1087

How to make files/results downloadable in HTML

I will ask you to check out this repository: https://github.com/imsikka/ArtGallery I want to make the result downloadable using a download button, I know how to make a download button but I don't know how it will make the file downloadable, I Need to link a button with a specific section of code or ...

P粉845862826 2024-04-03 13:15:55 0  1  527

CSS - anchor point move display:flex and position:absolute

I have a Flex element and three child elements. The second child should overlap the first child using absolute positioning, like this: Expected: Note that the second child should be on top of the first child, not next to it. However, setting display:flex on the parent seems to move the absolute elem...

P粉252116587 2024-03-29 23:51:55 0  2  515

How can the width of a font style be independently fixed?

There is a horizontal menu: Text Text 2 When the user clicks on one of the li's, its font becomes bold. Therefore, the width of the li element will change slightly. As a result, the menu jumps. How can I fix it so that it is not affected by the text width?

P粉502608799 2023-08-13 19:50:49 0  1  487

javascript - Questions about the jQuery File Upload plug-in

The user uses the input="file" tag to select a picture. After I draw the picture selected by the user to canvas for processing, I get the base64 picture data. Then the question comes, how do I put this result into jQuery File Upload, and then click the button What about uploading? {code......

淡淡烟草味 2017-06-10 09:49:07 0  1  645

Personalize the look of Select2 Dropdown

In my case, I'm using select2Combobox for my dropdown. Here, when the Country selection changes, I pass that selected id to the JSON result and get the result, assigned to the Province combo box. When this happens, the dropdown view changes from round edges to square. I want to know how to add the s...

P粉256487077 2024-04-03 11:27:22 0  1  470

Unable to get input element from website

So I'm trying to get an input element from Twitter, but when I run it it keeps giving me an error like this in the node terminal, and as a result, the browser window created by this code will close itself because it can't find the correct input selector. How do I get the correct type of input? Error...

P粉574695215 2024-04-06 18:59:57 0  1  659

javascript - for loop traversal assignment fails

The effect is to select a specific location in the table to display data. Originally, there were only two places with data. As a result, the entire column was assigned the value of the loop body $scope.dateList data structure. The background incoming data structure is displayed in the front-end styl...

某草草 2017-05-16 13:18:40 0  1  651

Image to text OCR web image URL upload

Referring to the working codepen demo here, the application works fine if I click the select file button to upload an image from my local machine and extract the text in the image. But how do I upload a web image URL like this instead of a local computer file and output the OCR text result with the ...

P粉316890884 2024-03-29 21:37:25 0  1  440

"Array.prototype.fill() uses objects to pass references instead of creating new instances"

I'm playing around a bit and trying to instantiate a new array of length x where all elements of the array are initialized to the value y: vararr=newArray(x).fill(y); If the value of y is not an object then this method Can work very well. That is to say, if y is an object, then the following conditi...

P粉682987577 2023-08-23 09:15:17 0  2  458

Tailwind CSS: Crafting Navigation Design

I'm new to CSS and VueJs so I'm creating a tab panel design + functionality Currently I'm using the tailwindCSS plugin The design I want is like this: Current: CodePen I can't replicate this wish because I'm missing the : between elements of spaces: I tried using flexspace-x-10 or gridgrid-gap-20 bu...

P粉515066518 2024-02-26 16:48:59 0  1  365

It was found that there is a duplicate id attribute value "x" in the web page.

I'm using Angular7 - three components [a, b, c] use input elements with id [x], however, component [b] also uses 4 input elements with id [x]. This raises accessibility issues - since the id needs to be unique. The test case uses 'getElementById' to retrieve the value and expects certain results. No...

P粉905144514 2023-08-31 16:06:41 0  2  570

How can I allow only one element to be selected in my click function? (Pure JS)

I'm creating a quiz app that pulls data from an API, builds a series of questions, and then loads a different number of "answer elements" on the quiz page each time, depending on which question is randomly selected from the array. Below is the creation Features a series of clickable "...

P粉345302753 2024-01-29 14:08:19 0  1  467

javascript - jquery each loop gets the width of the div and assigns it to the parent element. Why is the result wrong?

{Code...} Originally the result should be like this, but after removing the inline style, the result is so big. Why remove inline styles? That's it? ? ? ?

迷茫 2017-05-19 10:42:40 0  7  749

Design a database table structure that meets the following business requirements?

I was stumped by the last question in today's interview: (original picture) Design a database table structure that meets the following business needs: 1. A certain merchant holds a lottery for playing games for a period of time. Only users who play the game with 50 points or more can win the lottery...

phpcn_u36412 2018-03-14 23:00:16 0  1  1298