javascript - How to recombine series by combining echarts with ajax?

1. How to obtain the series in echarts that is combined into a histogram based on the data of the json file? 2. The following is json data: { { "info": { {code...} }, "item": [ {code...} ]} 3. The following is an example of the histogram that needs to be made: 4 .Sample code: &am...

大家讲道理 2017-05-19 10:18:47 0  1  595

Looking for help: How to permanently display data labels on a chart consistent with their position

I want to display these data labels permanently on the chart so that they are always visible, not just on mouseover. Can anyone help me? [Here is an example, similar to this one] I also put down my code. (https://i.stack.imgur.com/TY8X1.png) Pie chart example //Get the canvas element varcanvas=docum...

P粉302160436 2023-08-15 23:21:18 0  1  515

javascript - Problems with bootstarp-fileinput initialization preview

I want to directly display the existing image when initializing fileinput. This image is accessed from ajax and is an array. {Code...} The following is the prototype: {Code...} The following is the json data {Code...} initialPreview can obviously receive arrays directly, and my json data above...

代言 2017-06-26 10:56:57 0  1  787

javascript - Flow chart to obtain depth, please help with algorithm experts

This problem has been bothering me for a long time recently. I have the following json data {code...} Among them, prev_node represents the previous node and next_node is the next node. If prev_node is Null, it means that the current node is the first node. Next_node is null. The last node. According...

仅有的幸福 2017-05-19 10:48:24 0  2  1124

Image not loading in page

I want to load sliding images in a web application and for this I am using Bootstrap carousel. Get pictures from the background. Images are stored in image state. Below is the JSON format for getting the data. images:[{SNO:'1',NAME:'image.jpg',PIC_NAME:'image'}] After uploading the images, they are ...

P粉238433862 2023-09-09 20:59:03 0  1  596

javascript - Using fetch to request json data in react returns an html page

The problem is that we need to render a map component in the react code and request a json data. It is expected that the json data will be injected into the map component after the request is successful, but what we see in the console is that the content in index.html is returned. No json data is re...

PHPz 2017-05-19 10:47:17 0  2  1129

javascript - How to accept json data sent from jquery from flask?

The flask app accepts json data from the front end, but the flask request does not accept it successfully. There is no data in it, and it does not work after changing many functions. js code {code...} View function in flask: {code...} only determines whether request.json exists, but the returned...

漂亮男人 2017-05-18 11:01:48 0  3  655

Node-Express MySQL API output JSON array as string

Try setting up an ExpressAPI server to get some data for a portfolio website. I have set up a MySQL table with a JSON data type for my "image" column. "images" should have multiple image links for the gallery. However, the server outputs the image array as a string instead of an ...

P粉575055974 2024-03-30 12:49:49 0  1  416

Graphics cannot be displayed on PHPLOT

I would like to ask for help on PHPLOT if possible. The chart displays fine when using dummy data, but when I call the $words array, the chart does not display. Chart code: <?phpinclude_once("class/ProcessaPdf.class.php");require_once'lib/phplot-5.5.0/phplot.php';//$words=ProcessaPd...

P粉211273535 2023-08-20 22:13:56 0  2  568

Google chart animation loses visibility when chart data changes

I'm having trouble getting Google Chart animations to work properly. I think the problem is that the chart keeps redrawing instead of just updating the data, but based on Google's sample code and my limited knowledge of JavaScript, I'm not sure how to fix this. I don't want to include a button to up...

P粉170438285 2023-09-02 12:32:58 0  1  736

php - sql server2012 database data loss

The timer program reads data from redis every 5 minutes for table storage. Later, it was discovered that there were multiple tables with data loss from April 27 to May 3 as shown in the picture. What are the reasons for data loss? The code for joining the team is as follows:

过去多啦不再A梦 2017-05-24 11:31:01 0  1  483

javascript - How to implement this algorithm?

The data format is as follows: {code...} Requirement description: Draw each data on a 1-day coordinate map (00:00 - 24:00). The possible schematic diagram is as follows: 1. According to the startTime and endTime of the data, it can be obtained Get the coordinates of the data on the Y axis (expressed...

ringa_lee 2017-05-18 10:53:41 0  3  571

How would you use the map function in styled components to process data?

I'm practicing how to use map function. I have created a json file and want to display each data using map function. The data is transferred very well. But the problem is the way the image is displayed. The images are all in one file, and the way to display the image is to use background-position to...

P粉982009874 2024-03-30 18:06:00 0  1  478

Thinkphp has some issues about passing parameters to view

Click the a tag to transmit the parameter id to the controller. The controller queries the record value of the id row from the data table and displays it in the view through assign. However, when clicking on different links, all the records in the first row of the data table are displayed. Is there ...

给我你的怀抱 2017-07-05 09:56:02 0  2  892

Why does the order change after mysql uses group_concat?

Since the fields in the two tables contain a one-to-many relationship, the group_concat function was used to splice multiple pieces of data when constructing the view to reduce the amount of data. However, after splicing, it was found that the original order had changed. For example: original data: ...

天蓬老师 2017-05-18 10:49:30 0  1  862

In MongoDB, how to aggregate the data that records location information and query it to get the results?

Vehicle monitoring project records vehicle GPS positioning data. When we inspected highways in Zhejiang Province, the GPS heat map showed that the result became like this, as shown in the figure: In MongoDB, the format of stored data is as follows {{Code... } } After querying, the json format return...

某草草 2017-06-14 10:54:45 0  2  949

Unable to post data from useState to Mysql

I'm trying to post input data from useState to Mysql but it's not happening. While I am able to get the data from the database to the page, when it comes to publishing, I don't know how to send the data from the status hook to mysql when there are a lot of values. Please take a look at my code for s...

P粉368878176 2024-04-03 10:53:49 0  1  390

Create method in Laravel

{Code...} The above is my method of creating new data, using the Ukcont table. The picture below shows the error message: I’m a bit confused, why is it ukconts? The model I created is also ukcont, and the data table is also ukcont. Ask for advice.

淡淡烟草味 2017-05-31 10:34:25 0  2  465

jQuery traversing table error

I use jQuery to traverse table data, why can I only retrieve the first row of data? As shown in the figure, if there are three rows of data in the table, only the first row of data will be repeated three times. Code: Please help me, masters, thank you! $("#btn_show").click(function () { v...

P粉154884468 2023-03-29 18:20:32 0  0  646

javascript - How to render multi-layer nested json data in vue.js

Not long after reading the vue.js document, I wanted to use vue.js to make a small demo. I used Douban's API and obtained several layers of json data. js code {code...} vue component {code...} The image is obtained, but I don’t know how to get the name under the author. If I write autho directly, it...

PHP中文网 2017-05-19 10:29:17 0  3  719