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javascript - A js exercise question, why the last getElementsByTagName('a')[0] here is 0

{Code...} The effect of this implementation is the effect of adding and deleting the last column in a table. I don’t understand why oTd.getElementsByTagName('a')[0].onclick after createElement creates the a tag adding and deleting function. =function() The TagName selected here is [0], no...

女神的閨蜜愛上我 2017-06-26 10:57:27 0  4  944

javascript - Problems with adding and deleting using Vue in a for loop?

There is a requirement as follows: What is marked in color is the vendor that the client has added, and what is marked in gray is the vendor that the website expects the client to add (in this category). Now the requirement is: if the client adds a vendor in the category that the client is expected ...

過去多啦不再A夢 2017-06-12 09:31:27 0  1  747

java - How to realize unified operation function in PHP multi-management backend?

The diversification of needs has led to several backends A B C D... The derived backends are deployed on multiple different servers S1 S2 S3... Multiple management backends have some of the same functions: user addition, deletion, modification and query, article management, equipment management Oper...

PHP中文網(wǎng) 2017-05-16 13:02:55 0  3  572

How to use decorator to process redis operations in Python?

In python, decorators are used to process redis operations (including adding, deleting, modifying, and checking some operations). How to deal with it?

習慣沉默 2017-05-16 13:20:00 0  1  1140

PHP manages MySQL database

What knowledge points do you need to learn to use PHP to implement operations such as adding, deleting, modifying, and querying MySQL?

長江 2018-08-21 08:26:22 0  0  1158

mysql optimization - the situation behind mysql update, delete and insert operations on multiple pieces of data

1.Update, delete and insert operate multiple pieces of data, adding, modifying and deleting one by one. Is this correct? 2. Is there any way to prove it?

為情所困 2017-05-27 17:39:00 0  1  956

In TP51, return ['status'=>$status,'message'=>$message] will report an error

In TP51, return ['status'=>$status,'message'=>$message] will report an error, and adding json() will still cause an error.

邯鄲易住宋至剛 2019-10-15 19:29:04 0  2  1257

javascript - The problem of using js to manipulate tables and realize the change style of adding and deleting cells.

As shown in the picture, when I check these checkboxes, the table generated is like the one above. If I cancel the consignee's mobile phone number, the zip code will fill the vacancies in the consignee's mobile phone cell. The delivery address will fill the vacancies in the zip code cell. Manipulate...

迷茫 2017-05-16 13:45:16 0  1  809

Batch data is written into the data table, and a progress bar is displayed on the WEB side.

I want to send a group message. The number of members is too large and adding data is too slow. I want to make a progress bar.

A板命郎 2018-01-24 16:35:10 0  2  1664

python - Error when starting `Django` with `Pycharm`

I used pycharm to run the built Django project, and after adding my own webapp, an error message appeared {code...}. I searched Google but couldn't find the answer.

習慣沉默 2017-05-18 10:47:05 0  1  636

Symfony2 (2.0.17-DEV) 500 error occurs after creating form type

I made a demo of adding, browsing, updating, and deleting products according to the latest official PDF manual (en Edition). There is a many-to-one category attribute in the product. After previous testing, there was no problem. src/Acme/StoreBundle/Entity/Product.php {code...} sr...

黃舟 2017-05-16 16:46:23 0  1  530

javascript - The pdf in the webpage cannot be displayed and an error is reported. Can anyone tell me what it means is that the font is missing? How to solve it?

The pdf keeps being transferred and cannot be displayed, and the error message NOTICE Adding /usr/share/xpdf/xpdf-chinese-simplified to language pack directories,NOTICE outputting one file per page,ERROR Internal error: No current splash fontinfo...

過去多啦不再A夢 2017-05-16 13:00:45 0  1  883

javascript - Add multiple pieces of data organized into an object and pass it to php. How does php receive the parameters and parse them into normal data and insert them into the table?

I made a table for adding, deleting, modifying, and querying. There are many new pieces of data. Now I always use ? in the URL. Pass it to php in the form of appended parameters, and then php uses $_GET[''] to receive the passed parameters. This is a way to add new data. What I want to ask is, if th...

阿神 2017-05-16 12:59:35 0  7  602

javascript - After adding or deleting, the detected data is not sorted normally. How to solve it?

Recently, I have encountered a lot of problems while learning PHP. The information I checked online is incomplete or I can't understand it. I have to ask you to help me solve these problems. Thank you! Question: After adding or deleting, the queried data is not sorted properly and is all messed up. ...

曾經(jīng)蠟筆沒有小新 2017-05-16 12:58:26 0  2  606

Preview of teaching courses on September 14, 2018: Common DOM operations and practical cases

1. Teaching topic: Common DOM operations: Document Object Model (DOM, Document Object Model) is mainly used to operate the content of HTML and XML documents. DOM depicts a hierarchical node tree. By operating on nodes, functions such as adding, deleting, modifying, and searching document content can...

藏色散人 2018-09-14 10:52:17 0  0  1354

About absolute paths

1 is an absolute path and 2 is a relative path. Although both can be used, after adding a "/" in front of static, a code error message appears in phpstorm 1, which is very annoying. I don't know if there is a way to eliminate it or just leave it there.

益?zhèn)?2018-12-09 12:17:32 0  1  1082

LARAVEL: all elements in foreach have id 1, which makes deleting them impossible

My situation is very difficult. I'm building a birth list clone using scraper, but I'm having a hard time coding it because I'm inexperienced. I successfully created an admin page with multiple forms for inserting sites, categories and link forms where you can specify on which link should be crawled...

P粉064448449 2024-01-28 23:17:43 0  1  667

Google Earth ee.data.authenticateViaPopup is blocked by persistent pop-ups

When I implement the example of Google Authentication in the Google Earth JavaScript API, the popup login window is blocked and the following message is displayed on the console: The Cross-Origin-Opener-Policy policy will prevent the window.closed call. Lv@cb=gapi.loaded_0?le=scs:406 I tried adding ...

P粉124890778 2023-08-18 14:14:26 0  1  631

javascript - I want to learn adding, deleting, checking and modifying login in a week. Is there any good demo for getting started with node.js+express+mongoos? Do you have experience with thinkphp?

I want to learn how to add, delete, check, modify and log in within a week. Is there any good demo for getting started with node.js+express+mongoos? If you have experience with thinkphp on the front end, a demo for getting started would be fine. It doesn’t need to be complicated.

女神的閨蜜愛上我 2017-07-05 10:39:29 0  1  1181

Adding group in Davical causes error

Hi I'm trying to install Davical next to Nextcloud using Postgres, nginx and php8.1, it has been partially working (adding users or resources works fine), but when I want to create groups I get the following error message: I can Create a group in the admin panel, but when I call the group page (http...

P粉460377540 2023-09-04 22:16:39 0  1  870