How to get the first few layers of keys by specifying the key. It is best to use javascript

{ {code...} } The object data structure is similar to this. When I know the file name AttackArrow.json, I want to get the special effect 1/special effect 1_1 through this file name. How to get it is equivalent to clicking on the file AttackArrow.json. I want to know which folder directory it is in

三叔 2017-06-28 09:28:20 0  2  809

java - Is there any elegant way to handle calls from different sources differently for the same method?

When I was writing a control. There is a class subViewPager that inherits ViewPager. I need to use the getCurrentItem() method of this ViewPager in another place, which means to get a certain coordinate of this control. But because my ViewPager is for special effects, let it...

淡淡烟草味 2017-07-03 11:42:06 0  2  1265

javascript - Why does my router-link in vue not work?

{code...} {code...} This is the content of App.vue. In fact, the page display has been mounted as a tag, but clicking has no effect, and there is no effect of clicking to change the component {code. ..} This is the code for one of the routers. The other two are basically the same. How can I get the ...

漂亮男人 2017-05-16 13:38:06 0  2  698

JavaScript Basics Notes

JavaScript1. The relationship between JS and DOM. The browser has the function of rendering html code. The html source code is formed into a DOM object in the memory, which is the document object. There is a JS interpreter/execution/engine inside the browser. For example, chrome uses the v8 engine. ...

只是没有如果 2018-11-19 20:33:14 0  0  1098

How to generate QR code with parameters online for WeChat official account?

The QR code with parameters can monitor the source of fans, know the promotion effect, or automatically generate fission posters for more advanced implementation. . . Does anyone have an answer? #微信help function implementation

whb2010 2019-03-07 15:31:01 0  2  1223

javascript - Use H5 technology to implement a barcode similar to WeChat, Alipay, and click full screen and automatically switch to landscape mode?

As title. I developed an APP using H5+. Clicking on the QR code has been implemented. How to better achieve the effect of clicking on the barcode to enlarge and horizontal screen is similar to the payment interface of Alipay and WeChat? Figure 3. I didn't do it well. I beg you all to provide elegant...

扔个三星炸死你 2017-06-14 10:50:51 0  3  1239

php - How to implement caching in ci3.0?

I want to implement database data in ci3.0. After I cached it according to the ci manual, the page effect is still average. Is there any better caching method?

曾经蜡笔没有小新 2017-07-05 10:46:03 0  1  864

javascript - Text click effect of Weex's <text>

The text in weex has no click effect by default. The official website has not found a way to obtain the press status. Is there anyone who can implement a function similar to Android's selector?

ringa_lee 2017-05-19 10:33:24 0  3  586

javascript object problem

js objects, what knowledge is often used in actual development? Array? time? Regular expression? For example, do you need to use these for slideshows or other special effects?

PHPz 2017-05-18 10:52:15 0  4  578

html5 - vuex storage problem in vue project

Implementation effect: Click the button to switch the width of the left menu. I have now used Vuex to store a field IsOpen, and then both the nav component and the menu component have obtained the initial value of the field. When the nav component button is clicked, the value of IsOpen is also switc...

迷茫 2017-06-27 09:19:31 0  2  902

Use tools to generate posters with QR codes in WeChat?

Is there any WeChat third-party tool platform that can implement QR code posters with parameters, and can statistically query the effect of fans? Real-life technology or function #微信 Help Generate poster QR code, promoter QR code function print('')

whb2010 2019-03-12 14:30:52 0  2  1368

javascript - How to write nested components inside vue recursive components?

The outside is a recursive component, but the inside needs special processing and is divided into components. I want to achieve this effect. The demo is at https://jsfiddle.net/u5x1hvbh/. How should I modify it?

phpcn_u1582 2017-05-19 10:32:57 0  1  645

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...

女神的闺蜜爱上我 2017-06-26 10:57:27 0  4  866

Extract more information from PHP pages using JavaScript

In order to automatically update a certain part of the page without having to constantly reload the page, I have implemented this code on the platform. If you just want to update a piece of data, everything works fine, in fact the php page contains multiple queries to populate different sections. Ho...

P粉445714413 2023-08-13 12:27:33 0  1  586

PHP cURL not showing all DOM tags when reviewing collection

I want to implement some code to collect comments from specific page DOM. The cURL results are incomplete and I don't know why because some subtags in the DOM are not visible in the results. The DOM looks like this in the inspector: I tried to collect the DOM using the following code snippet: $domai...

P粉677684876 2023-09-12 20:03:06 0  1  613

Apache server enables HTTPS access

Apache is currently installed on a Centos, and three virtual machines are created, one of which is configured with an SSL service. The effect I want is to disable HTTP access and only allow HTTPS access. How to configure and implement this? Current situation: Both HTTP and HTTPS are accessible.

PHP中文网 2017-05-16 17:01:15 0  2  671

Is there a way to achieve smooth scrolling animation when using the scroll wheel?

I'm trying to make it so that when I scroll the page it moves smoothly instead of the "jumpy" way it does when using the scroll wheel. Most of the sources I've seen related to this involve smooth scrolling when clicking a button or link, like what react-scroll provides, but I specifically ...

P粉118698740 2023-08-16 16:40:27 0  1  612

javascript - Implement the mouse to draw a div frame and obtain the dom element covered by the div

Similar to this effect, move the mouse and pull a div box to select the dom element covered by the div. Do you have any good ideas that can be implemented? The method I came up with is to judge the offsetLeft, offsetTop of the div and the offsetLeft, offsetTop of each element that needs to be select...

仅有的幸福 2017-05-19 10:09:21 0  4  587

c++ - What is the specific implementation of this reserved by library placement?

{Code...} I encountered it when I was learning various forms of operator new (c++ primer didn’t explain much), but I couldn’t understand the role of this function, such as how to use this function call to implement placement new. Construction effect, such as two *abc = new(m) two(10);(...

怪我咯 2017-05-16 13:30:16 0  1  819

javascript - How to implement front-end map animation effect.

Similar to the effect below, the avatar can move according to the route. I have never been exposed to this kind of animation before. How should the front end be implemented? canvas? webGL? or ready-made framework? I have no clue as to what ideas should be used to achieve this effect. . .

PHPz 2017-05-16 13:36:02 0  2  460