Export and save after js modifies the contents of the json file

topic description

js modify the contents of the json file and export and save

sources of topics and their own ideas

want to write a web page similar to online notes, the back end is not at all, just want to create a json file to record the number of people entering the page, time, and then display on the page.

related codes

/ / Please paste the code text below (do not replace the code with pictures)

what result do you expect? What is the error message actually seen?

Operation method for js to modify json file and save it

Javascript json

Jun.16,2022

using nodejs's express, it's easy to build a simple website backend, even if it doesn't have a backend.

Previous: Gatwayworker is distributed, and the server cannot find all clients. SendToAll is not successful and can only be sent to the client that connects to the current server.

Next: How to use vue routing in pure js files

Several problems of obtaining json by ajax
< H2 > how did the printed index max item come from < H2 >? ...

Ajax javascript json php

Mar.03,2021
Js conversion problem: {id: 111, name: 'aaa'} converted to "id=111&name=aaa"
how to convert {id: 111, name: aaa } to "id=111&name=aaa " most conveniently...

Javascript json

Mar.06,2021
Given that an object and a string of data paths are known, how to find the value according to the data path
there is an object var obj = { a: { b: { c: 3 } } }; var text = a.b.c how to modify the value of c according to text path to 4 , so that the result is { a: { b: { c: 4 } } } Mini Program s setData meth...

Javascript json

Mar.11,2021
Jsonp grabbed the list of QQ Music singers and reported an error Uncaught SyntaxError: Unexpected token:.
this is the singers list https: y.qq.com portal singe. ...

Json javascript jsonp

Mar.14,2021
A multi-level json object, delete the object is an empty key value, think you can use recursion, how to achieve
let arrn=[ { "MENU_URL": "serviceManage", "MENU_ID": "8619ca0b6fbc42649a27475e339d5d4a", "MENU_INFO": [ { "MENU_URL&quo...

Javascript json map

Mar.26,2021
How to deal with the JSON of 3W pieces of data is the most efficient and takes up the least resources?
A file about the size of 4MB. How to deal with it more efficiently and take up less resources. is primarily a read operation. ...

Node.js javascript json

Mar.28,2021
Js json object from the child to find the outermost layer how to find the parent, is there a way
the parent can find the direct point of the subset, but the subset can find the parent. How to operate let arrn=[ { "MENU_URL": "dashboard", "MENU_ID": "104a580029c54e139210b7e87dca6d89...

Javascript json

Mar.28,2021
How to preformat whole-row JSON data into an observable and standard format
for example, there is a whole row of JSON data and what I need is { productNo:xxx, key1:value1, key2:value2 } in this form ...

Javascript json

Sep.16,2021
How to design the json level 4 menu with the first layer?
[{ "name": "", }, { "name": "", }, { "name": "&quo...

Javascript json

Sep.17,2021
The value mapping of the json object is displayed in Chinese
for example, the json string returned after the request { color:1, ... } the corresponding relationship between color numbers and Chinese: (1: blue 2: yellow 3: green) would like to ask, how to convert to Chinese to bind to the data object? (...

Javascript json vue.js

Nov.08,2021
How to change the array object to the one I want to split with','
...

Javascript json

Nov.24,2021
The string of JSON is one line. Is there a npm package that can format it into a newline style?
for example, the string { "errcode ": 0, "errinfo ": "} can be formatted as when displayed. { "errcode":0, "errinfo":"" } Is there a plug-in implementation for ? of course not only this kind of value is a st...

Javascript json

Jun.20,2022

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1bee4cc-3112f.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bee4cc-3112f.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?