Generate random data using mock.js

This article mainly introduces the implementation method of using mock.js random data and using express to output json interface. Friends in need can refer to it

Front-end projects will use the back-end interface, but when the back-end interface When it is not written well, you can use mock.js to randomly generate some fake data to debug the page

Install mock.js

First use express to create a nodejs web project. If the name is demo, I won’t say it here.

yarn add mockjs

Use the random number above

const Mock = require('mockjs')

var data = Mock.mock({
 'list|2': [{
 'id|+1': 1,
 'color': '@color()',
 'date': '@datetime()',
 'img': '@image()',
 'url': '@url(http)',
 'email': '@email()',
 'name': "@name(1,2)",
 'text': '@paragraph()'
 }]
})
console.log(JSON.stringify(data))

The method can be found in the link to the mockjs document given at the bottom. The method called by Mock.Random can be used directly by adding @ in front. It is very convenient.

Output

{
 "list": [
 {
  "id": 1,
  "color": "#8179f2",
  "date": "2015-06-22 12:10:08",
  "img": "http://dummyimage.com/250x250",
  "url": "http://hwujcvh.fk/vfrjfmi",
  "email": "y.ahbatuekk@mbkhfybrh.pl",
  "name": "James Ronald Rodriguez",
  "text": "Zsogshtw qjscoe qwggnfk ppbdpqd avftd pvczrvnu gsyfyefm rbnbjyy tgemy buple ieghyjp klcxauofu lhjmnb kjpyodk. Njync ysrvx jevei stawy mcosrlpo iacryqob wkkcfuh nkrrdutr zduikjvtf dcv pppbhi ygjnkmg xvpusp ayu lvu. Wgqmtwvo ibqzp cct kodyh ovz slo cpc uqaseuwv ubjgbf hihh oudly mooztiojpi tubmwhsmb kktbkyqp hsvwgoluu jrkosqudm. Wpumdvtw riytwoa sbittrr xtjy beorkb osnjpigntu ndrgxhozeq iufhu hpuirgmh lstoijpqx hopk lkxceqhvr uymj pgdms njjmu ivxijmokn."
 },
 {
  "id": 2,
  "color": "#94f279",
  "date": "1980-02-20 19:46:44",
  "img": "http://dummyimage.com/336x280",
  "url": "http://voyqj.cx/jjyksqzur",
  "email": "k.ydgui@gixl.cr",
  "name": "Ronald Nancy Harris",
  "text": "Lbdpwqwpgd sodipqu oncnnyis ebtwho dnbt fqxnjyzr qtrriop gfbjt prto dgmtgff gwaqnhon sdlvpxpj pqomfflsc skj. Cvteunoj oqmjnfm vowvmw ypywtr klcazkvg cvsyzayytl bgvywe kfqqzhfg iahm jwury xsgf xnr pvfxwhaed nauookwi xuxtgnwq flcbmnrm qglgziy vegml. Cexit vdotefuj nptmei hekmljnt bukxrd ndhj lkfyjcv oldpgo rrj kprfklt nfks yvrvc. Aynbyd hxguza ftjrn kmlirqo wxald jqjkvahim jnhezpgm usev qbynwhm yotehgkwdg eyxj vfnm icchnds dgmd odxajing vqrdl yhpp eba. Tykxnhe njod bslwbsjcj rwlv rkvxk rypew fpfqrqi psislxuwgs jcwrbtfn qeszy leovhc jwupwzo kitct nhbdhjq xyiajxms. Gfgkw nnlg drcqnpwn bowqknwy oiw yysaohk fqqsbgvp mulik vusikwv nbp kpbo nhti dhf hrgql."
 }
 ]
}

Integrated into express to output json

const Mock = require('mockjs')

exports.index = function(req, res) {
 var data = Mock.mock({
 'list|2': [{
  'id|+1': 1,
  'color': '@color()',
  'date': '@datetime()',
  'img': '@image()',
  'url': '@url(http)',
  'email': '@email()',
  'name': "@name(1,2)",
  'text': '@paragraph()'
 }]
 })
 // 延时1秒，模拟网络请求时间
 setTimeout(function() {
 res.send(JSON.stringify(data))
 }, 1000);
}

express cross-domain

Interface address and The front-end project address will definitely be different. At this time, the request interface will involve cross-domain issues. The solution in express is as follows

app.all('*', function(req, res, next) {
 res.header("Access-Control-Allow-Origin", "http://localhost:8080");
 res.header("Access-Control-Allow-Headers", "X-Requested-With");
 res.header("Access-Control-Allow-Methods","PUT,POST,GET,DELETE,OPTIONS");
 res.header("X-Powered-By",' 3.2.1')
 res.header("Content-Type", "application/json;charset=utf-8");
 res.header('Access-Control-Allow-Credentials', true);
 next();
});

Description: The above code was found online, but there is no such thing found online. Sentence res.header('Access-Control-Allow-Credentials', true);

The address of my front-end project is http://localhost:8080, so the value of Access-Control-Allow-Origin is http: //localhost:8080

You can modify it according to your own server

The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

Related articles:

How to generate a drop-down list with pure js

vuex’s detailed introduction Chinese document

How to solve the problem of Router cross-module jump

The above is the detailed content of Generate random data using mock.js. For more information, please follow other related articles on the PHP Chinese website!