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javascript - js array finds elements by index and returns

js array finds elements by index and returns the element

为情所困 2017-05-19 10:37:33

mongodb - Mogodb uses text index, can't it use compound index?

Is it true that if a text index is used, a composite index cannot be used? Because I used the following query statement but only did text indexing: {code...} Checked through explain, he did text indexing. Then filter out other conditions from this index! So what should I do to fully...

PHP中文网 2017-05-24 11:31:30

It is originally done through $obj2 = $obj, so it should be equal. If you want to determine whether it is a reference, shouldn't you use $obj2 = new Demo();?

It is originally done through $obj2 = $obj, so it should be equal. If you want to determine whether it is a reference to the current object, shouldn't you use $obj2 = new Demo(); and then determine whether it is equal?

何、夕 2019-01-30 15:59:34

How to call PHP function through JavaScript?

I'm trying to call a PHP function via JavaScript from an external PHP file. My code is relatively long, so I'll write a sample code here. This is my PHP code: This is my JavaScript code: var phpadd = add(1,2); // Call the phpadd function var phpmult = mult(1,2); // Call the phpmult function var ph.....

P粉133321839 2023-07-30 18:57:00

Websites created through tools can only open the index.php file through the URL.

The website created through the tool can only open the index.php file content through the URL. If it is created with another name, such as demo1.php, it cannot be opened through the URL and 403 will be reported.

龙 2017-12-22 12:03:40

How to render data through DOM instead of through table

I have a question about an application I'm creating, I'm using an Oracle database and I'm getting information from the database and presenting it on the screen via a table, but I'd like to try processing the data individually, for example creating a paragraph and displaying it a value. I can only pr...

P粉207483087 2024-04-04 18:17:27

javascript - JS library conversion problem from script reference to using import

Maybe the title is not very clear, so I will explain in detail: I rely on a jq component in a project, which is referenced through script tags. How can I make it available through the import method? {Code...} This is the library above. I forgot to hang it on the window...

ringa_lee 2017-05-19 10:47:36

How to stream http mjpg over https using php proxy

I have this php script which is supposed to load an mjpg stream over HTTP and output over HTTPS. However, all it produces is a broken image: <?phpfunctionproxyMjpegStream($url){$ch=curl_init($url);curl_setopt($ch,CURLOPT_HEADER,false);curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);curl

P粉835428659 2023-09-03 20:54:13

6.0 cannot be installed via git

6.0 cannot be installed via git

TTT 2019-08-15 20:30:23

firestore: Is it faster to retrieve documents by id or by query?

My collection of documents has an id (of course), but also has a field that holds the same id. Question: Is it faster to retrieve the document by id collection.doc(id).get().then(....) or by querying collection.where('id','==',id).get() .then(...) I just refactored my function code. I used to use qu...

P粉291886842 2023-09-14 08:54:32

Is there a way to differentiate resource requesters via PHP or .htaccess

Is there a way to differentiate between the browser loading the page that requested the resource (e.g., <scriptsrc="https://www.example.com/requested_script.js"></script> versus the resource being requested directly by using PHP or .htaccess Direct (no referrer) by typing the U...

P粉821808309 2024-04-04 08:37:32

Print newline with single quotes in PHP

I tried to use single quotes as much as possible, but I noticed that I can't use \n inside single quotes. I know I could enter the newline character directly by pressing enter, but that would break the indentation of my code. Is there some ASCII character or something I can type that will produce a ...

P粉436052364 2023-08-23 23:53:11

node.js - How to decrypt files encrypted by golang with nodejs?

I used golang to implement file encryption and decryption, but I don't know how to use nodejs to implement golang's decryption. Golang code: {code...} If the file encrypted by the above golang code is parsed using nodejs? I don’t know that converting to nodejs mainly focuses on a few bytes of golang...

PHP中文网 2017-05-31 10:39:35

How can I simplify this JavaScript code by chaining functions?

I'd like to know how to simplify these function calls by chaining them. Is there a way to chain forEach, push, destructuring arrays and map together? Let selectorsForLoader = ['a', 'b'], loadingElements = []; selectorsForLoader.forEach(selector => {loadingElements.push(...Array.from(documen

P粉099145710 2023-07-28 22:21:25

Laravel search via pure (unsupported) enumeration

I'm trying to perform a search in the database via a pure enum field: enumEnum1{caseCase1;}Model::query()->where('enum1',Enum1::Case1)->first() and it doesn't work, causing Error ErrorObjectofclassEnum1Couldnotbeconversiontostring. When I search by supported enum it works: enumEnum2:int{ca

P粉773659687 2024-02-03 20:19:05

Cannot get through domain name /admin/user/

Teacher, I cannot open it through the domain name /admin/user/get. It reports 404.

阿杜 2019-08-13 13:58:10

Share images via social media using PWA

In my NuxtPWA I have a function that converts HTML to Canvas using this package. The generated image is in hexadecimal format. Now I want to be able to share the image via: Whatsapp, Facebook, Email, Instagram, etc. I've found several packages, but none of them seem to support sharing just file URLs...

P粉300541798 2024-01-28 22:02:28

php - Posting articles on the website needs to pass the third-level review. How to achieve this? ?

To edit and publish an article, it needs to pass review. It needs to pass two reviews. Only users who pass the review can see it. How is this function implemented? ? Are there any good ideas? ?

某草草 2017-06-07 09:22:56

The page function definitely exists, but when accessed through the program, it prompts that the page function does not exist. What is causing this?

The page function definitely exists, but when accessed through the program, it prompts that the page function does not exist. What is causing this?

财神保佑 2022-02-24 11:42:46

File permission setting test failed

File permission setting test failed

vous 2018-05-08 15:36:14