JavaScript bitwise NOT operator (~)

See the lottery code {code...} of <TFC2017/> Why can the ~ operator round numbers?

伊谢尔伦 2017-06-28 09:29:08 0  1  1030

Confusion caused by javascript select all function

The code directly is as follows. The select all function is not easy to use. {Code...} Change one sentence {Code...} Why does the code execute normally when _input is placed below? Can't we get external variables in the callback function according to the scope?

大家讲道理 2017-05-19 10:34:59 0  5  515

The element must disappear when the page nears the end

I have this JS code for adding and removing classes when scrolling down from the top of the page, but what I want to do is disappear when you get close to the end of the page or go back to revert to the old state after some scrolling (e.g. from the right: 7px to right: -150px). I copied the same JS ...

P粉463418483 2024-03-29 23:04:00 0  1  386

Detect browser or tab closure

Is there any cross-browser JavaScript/jQuery code that can detect if the browser or browser tab is closed, as opposed to being caused by clicking on a link?

P粉760675452 2023-07-31 13:55:00 0  2  607

Vuejs @input="function" is not working but @input="() => do some" is working

I don't understand why when I pass an anonymous function to the @input field of my html input component it works, but when I call the real function with the exact same code inside it doesn't work. This is the code when it doesn't work: <scriptsetup>import{ref}from'vue'consttext=ref('')constnum...

P粉659518294 2024-03-19 19:11:59 0  1  321

Loop through multiple elements and calculate the price discount for each element

I'm trying to find the percentage difference between the old price and the new price for each individual. Currently, my code only gets the percentage difference of the first one and loops the same percentage difference into the rest. Does anyone know how to update this code to target each individual...

P粉506963842 2023-09-02 17:14:31 0  1  520

Safari 16.4 and iOS 16.4 change dynamically set CSS properties on their own

I made a javascript puzzle game a few years ago and it worked just fine. Recently, after iOS16.4 and Safari16.4 update, the code is not working the same way, after investigating I found the problem but I don't know how to fix it. In my code, I set 2 CSS properties (background size and background pos...

P粉099985373 2024-02-21 15:11:28 0  1  381

Why doesn't my Bootstrap navigation bar render correctly?

I'm trying to make a navigation bar using Bootstrap4 but my code doesn't seem to work. My code is almost identical to the tutorial, with just a few changes to the nav-brand. What did i do wrong? This is what it looks like. <navclass="navbarsticky-topnavbar-lightbg-light"><aclass=&...

P粉121081658 2023-09-16 16:14:06 0  1  939

The home page content looks the same as the H-UI template

This learning content is the same as the homepage content that comes with H-ui. Why do I need to rewrite the code? After downloading H-UI, I opened it directly in the browser and it had this homepage function.

juni 2020-02-26 10:07:57 0  0  1165

javascript - jQuery event binding on and off problem

The code is as follows: {Code...} Why does this code output handler1 and handler2 when it is clicked for the first time? The off in handler1 works but handler2 is still executed once. What is the reason? Refer to the jQuery documentation. The documentation explains: Adding or removing event...

迷茫 2017-05-18 10:51:00 0  3  540

How to improve python?

I watched a set of python tutorials and studied them systematically. I feel that the code is still less written, and many functions cannot be applied flexibly. Is there any good way to improve it? Some suitable for novices?

为情所困 2017-05-18 10:55:16 0  3  673

How to make php code automatically run on win server?

I hope that the php code can continue to run after the browser disconnects. I have tried many methods but none of them work. Simple and direct regardless of the consequences 12345678910 <?phpignore_user_abort();//Close the browser, and the PHP script can continue to execute.set_time_limit (0);// ...

朱 2022-06-06 23:17:51 0  4  1652

How to add WordPress password reset link in HTML email?

I'm trying to replace WP core password reset emails with Html emails. Overall it works great, the emails are well formatted and sent correctly. However, implementing dynamic resetting of the link doesn't work (same goes for the username, but that's not even the most important thing) I used the follo...

P粉136356287 2023-09-02 13:52:43 0  1  619

Using jQuery: Add array index value to output

I'm new to jQuery and JavaScript. Managed to get the following code to work, adding a new text input field based on the number selected by the user from the (previous) dropdown select field. <script>$(function(){varinput=$('<inputplaceholder="Enter a name or title..."type="te...

P粉567112391 2023-09-16 09:54:22 0  1  812

javascript - jquery uses the for method to obtain the page attribute value of a repeated name and cannot get help.

The situation is as follows: I have a form that needs to dynamically add input items, and the name of each input item is the same. Since non-null verification is required, consider using jquery to obtain the value of each element and judge it. The code is as follows: $("#reg").click(functi...

PHPz 2017-05-19 10:17:03 0  3  516

Uncaught error with useNavigate() only in the context of a <Router> component in React JS

I removed some code to make it easier to read but everything is imported correctly and working fine but I can't resolve this error I got this error but I saw a tutorial and even reactRouter website has the same method but it's Not working in my code I want to change route when enter key is pressed o...

P粉207969787 2023-08-26 12:55:20 0  1  581

"The hide method of Bootsrap-Vue Modal is invalid"

I have a simple bootstrap-vuemodal which contains an inputtext. I want the Ok button to not automatically close when I press it, so I used "prevent". Then I do some validation and then want to close it using the "hide" method. But doesn't work for me. The strange thing is that th...

P粉428986744 2023-08-25 17:59:43 0  2  597

I've created an element in pure CSS via bookmarks. It is created but not visible

My code is as follows: g=document.createElement('div');g.setAttribute("id","divcontainer");g.innerHTML=`HTMLGOESHERE` When I use this on my website I want the div to be centered and Visibly, it's working because it creates the div (tested in console), but I can't see it. I'm not ...

P粉725827686 2024-04-04 17:27:27 0  1  575

Automatically expand text area

I'm trying to make a simple auto-expanding text area. This is my code: textarea.onkeyup=function(){textarea.style.height=textarea.clientHeight+'px';} But the textarea grows infinitely as you type... I know there are Dojo and jQuery plugins It is possible to achieve this, but I don't want to use them...

P粉245489391 2023-10-21 08:49:23 0  2  682

javascript - As a beginner in programming, should I use an editor to copy the source code of jQuery or thinkphp?

Beginners in programming, do you want to use an editor to copy the source code of the jQuery library or thinkphp framework? To improve your programming abilities and ideas? I remember seeing a person on Zhihu who did the same thing. Now look for that answer. Not here. Can the experts tell me how eff...

高洛峰 2017-06-05 11:07:36 0  3  598