javascript - How to determine if the columns of bootstrap table mergecells have been loaded?

Use bootstrap table options to set up a table, and hope to use the mergeCells method to merge cells, but now I don’t know how to determine whether the columns have been loaded?

高洛峰 2017-05-19 10:15:21 0  1  984

How to automatically generate page numbers 1, 2, 3..., help, urgent

<?php//Paging function//Connect to the database require_once("connect.php");$page = isset($_GET['page'])?intval($_GET['page']):1;//Set The current page number, if not, set it to 1$num=3;//Display 3 pieces of data per page/*First of all, we need to get how much data there is in the datab...

梁温柔 2018-04-18 17:26:51 0  0  1218

I don't understand the meaning of judging whether it is a static instance? ?

One ($instance =null;) has been defined above and the judgment (self::$instance instanceof self) is definitely (false). Why do we still need to judge? Wouldn’t it be enough to directly assign the current object instance to (self::$instance) and then return the value? self::$instance =new self($siten...

God_Like 2019-05-16 12:43:53 0  1  1352

php - nginx redirect, why does the browser prompt too many redirects?

{Code...} This is how I set it in the nginx.conf file... Is this the wrong judgment statement?

曾经蜡笔没有小新 2017-05-16 13:02:38 0  1  358

javascript - How to modify the referer in the request header

When requesting a picture, I found that the referer was judged and the noreferer setting was invalid. Is there any way to modify the referer in the request header?

天蓬老师 2017-06-28 09:24:37 0  2  1348

How to determine whether nginx uses epoll

The nginx documentation says that it can automatically select the appropriate method: {code...} Use epoll is not specified in the configuration file. How to determine whether nginx uses epoll?

过去多啦不再A梦 2017-05-16 17:19:03 0  3  890

Objective-c - How does an iOS device know whether the current network is IPV4 or IPV6?

As the title states, the server my device currently accesses is through IP plus port. This time Apple requires a network that supports IPV6. How should I judge it in the device? Does the server need to be set?

为情所困 2017-05-02 09:29:30 0  2  1387

isset() and empty() - what to use

Can you help me improve my coding style? :) In some tasks I need to check - if a variable is empty or contains something. To solve this task, I usually do the following. Check - is the variable already set? If it is set - I check - is it empty? <?php$var='23';if(isset($var)&&!empty($var))...

P粉165522886 2023-10-16 20:54:57 0  2  558

Why can I access it directly even if I set the judgment?

<?phpnamespace app\admins\controller; use think\Controller; use Util\data\Sysdb;/*** */ class BaseAdmin extends Controller{//Account’s session data, based on admin to determine whether the user is logged in, if not There are no users in admin

phpcn_u211985 2018-07-18 14:55:05 0  8  1587

css - How does AngularJS judge different situations and set different background colors? ?

For example: According to {code...} style="background:green;"`, red, yellow, green, and black can be set according to different values ​​1, 2, 3, and 4 of node.status. How to implement black? Wait online, no one will?

習慣沉默 2017-05-15 17:04:11 0  3  525

Progress bar animation in recyclerview item android - progress bar animation in recyclerview item

To write a demo, I want to animate the progress bar in the item in the recyclerview, so I write it by continuously setting setProgress(). However, in the actual process, the animation will play on the incorrect item, even if I judge that if the item If it is being reused, there is nothing you can do...

扔个三星炸死你 2017-06-08 11:02:32 0  1  1258

javascript - thinkphp3.2.3+HTML5 problem

Regarding the location check-in, you cannot open it if it exceeds this range. Once you have located your location, you need to read your current longitude and latitude, and then determine whether the current longitude and latitude are within the range of the longitude and latitude you set. How does ...

三叔 2017-06-08 11:01:46 0  3  708

java - About the design of Spring MVC login system

My current idea is to define a User object, which includes uid, username, password, isLogined, etc. Then set up an interceptor. When the user requests for the first time (session starts), it determines whether the user is logged in based on user.isLogined from the database. If logged in, se...

天蓬老师 2017-05-17 10:08:17 0  4  578

javascript - Issues related to js login home page

The verification code is not loaded when visiting the page for the first time. The verification code is loaded after the second time. Please tell me how to implement this. The current login page settings are as follows. How to record his first login and then judge. Thank you for your answer.

PHP中文网 2017-05-16 13:36:53 0  4  522

nodejs-express - Use nginx to configure port 80 of a certain domain name. If the root path cannot obtain the static file, it will be forwarded to port 9999 provided by nodejs. How to achieve this?

The code I'm writing now is as follows, but it doesn't work. Do I need to write rewrite rules, use regular expressions, or if? And: If you configure a static file directory in nodejs, app.use(express.static(__dirname)); will the performance be lower than nginx's direct judgment and processing? {code...

我想大声告诉你 2017-05-16 17:20:54 0  3  771

html5 - Verification issues about PHP server time

When I am making a timed appointment, there is a verification condition in the form that determines whether the current time has reached the set time point. If it has not arrived, it cannot be executed {code...} According to logic, if the time does not arrive, The content of the form cannot be acces...

滿天的星座 2017-05-16 13:08:27 0  2  551

How to provide different indent widths for different code files in vim?

How can I set different tab space widths for different code files (which can be simply judged by their suffix names) in the .vimrc file? For example, the tabs of .rb files are indented by two spaces at a time, the tabs of .c files are indented by three spaces, and the tabs of .cs files are indented ...

曾经蜡笔没有小新 2017-05-16 16:41:26 0  1  1122

Vue Apollo uploading files causes Node to crash and the call stack size exceeds the maximum limit of _openReadFs

I'm trying to setup a frontend for graphQl file upload using Apollo-boost-upload. The backend code is based on this link https://dev.to/dnature/handling-file-uploads-with-apollo-server-2-0-14n7. After adding the following line in the server.js file, the parser breakpoint is now reached const{apolloU...

P粉331849987 2024-03-27 09:45:25 0  1  428

How to use UNIQUE of PHP and MySQL to ensure that the user name is unique like JD.com registration?

I think that such quick judgment of duplicate user names is achieved by setting the user name field UNIQUE and then writing to catch the exception. But I tried it and found that the actual operation is not that simple. If the user name is required to be unique, just write a table to see the exceptio...

phpcn_u1582 2017-06-28 09:23:08 0  3  863

What are the benefits of using the __get() method and __set() method instead of setting public properties directly?

Although compared to the PUBLIC attribute, the magic method can control read-only and write-only, but the two magic methods are useful for all private members. If you want to control only some of them, you need to write an If judgment. If this is the case, it is better to set the attribute to PUBLIC...

小毛 2018-04-21 11:31:56 0  0  1316