specifically, the onload () method assigns values to page variables in Mini Program. The code is as follows:
onLoad() {
console.log("all", app.globalData);
console.log("app", app.globalData.appinfo.client_id);
console.log("user", app.globalData.userinfo);
this.setData({
nickName: app.globalData.userinfo.nickName,
avatarUrl: app.globalData.userinfo.avatarUrl
});
}the screenshot printed out is:
Why can"t userinfo get it?
console is asynchronous, that is, when you press the object arrow, the data will be requested again, so userinfo exists when you click on it, but when you get it on the page, there is actually data acquisition delay . If you set the settimeout delay of 3 seconds to get it, you should be able to get it.
I have encountered this problem before. The final solution is not to get the data in the page js, but to use a js under utils to obtain the data , and to return a method , then adjust this method when the page onload, and then assign the returned value to the page data , and then take the value directly on the page. If you have to process the data, It is recommended that declare functions in the . There will be data delays in the page js. wxs file to deal with
for example:
for example, the data of my shopping cart needs to change in real time, so I wrote a shopping-cart.js file under utils, and sc is all the data needed for the page contained in the shopping cart
sc
wxs;
you didn't call the API to get userinfo
desired effect my implementation filter-option.js Component({ methods: { onTap () { console.log("i clicked"); this.triggerEvent( tapoption , {}, { bubbles: true, composed: true ...
now there are two problems 1 2 ask all kinds of experts for advice, thank you very much ...
when Wechat s developer tool does not log in for a period of time, log in again figure 1: : : --------------- https: developers.weixin.qq.... ...
the array set in data, setData is populated with list, but the length of the array is still an empty array. What is the principle of this? ...
Page({ apps onLoad: function (options) { this.setData({ articleId: options.article_id }) let contentGroupID = 000000000000000 let MyContentGroup = new wx.BaaS.ContentGroup(contentGroupID) MyContentGroup.getContent(a...
tab-template.wxml <template name="tab-template"> <button bindtap="onshow" wx:if="{{show}}">< button> <view class= wrapper wx:if="show"> <view class= main >xx< view> <...
I have also written several form applications, all of which can be run. I don t know what happened to this form, but it didn t respond when I clicked on the button. There was no error in the console. I really can t see what the problem is. Look forwa...
the usage scenario is mobile phone WeChat Mini Programs. needs to enable the user to enter @ in the text box to jump to the contact s page. My idea is to listen to input events and get the input key code, but look for the key code without @ on the Inte...
var obj = { f1: function() { var p = new this.f2() Object.assign(this, p) console.log(1, this) }, f2: function() { console.log(2, this) this.f3 = function() { console.log(3, this) } ...
= > pull-down bottoming event on the page = > handle waterfall stream effect function (image preload function callback is required to perform picture output) = > picture preload function now I don t know how to determine the completion of loading a...
in native js, the drawImage method of canvas supports passing video elements. url: ask the gods, if you want to intercept the first frame of the video as a picture in WeChat Mini Programs, what can you do? ...
I asked for the mini code at the front end, which returned a pile of garbled codes. java has found a way to convert binary streams and pictures to each other on the Internet, but the data obtained from the WeChat Mini Programs code interface cannot get...
the data returned by the interface of generating QR code with WeChat Mini Programs is like this. How can I display the QR code picture without going through the server? ...
there is a painful need is that the selector data of a form page is obtained from the server data, return several objects, generate several picker, (not necessarily generate several), the user selects the data and clicks the submit button to get the data...
the first requirement is that when the page is loaded for the first time, it will verify whether it has been stored in the database. If it is saved, it will display indexA. If the database cannot find data, how can indexB, control the display? I can wri...
I have a business scenario page An is a first-level page, page B is a detailed page of page A, in which there is a button to add details to enter the C form page, fill out the form and click to successfully enter D. Confirm page D click the button insi...
the user name and password sent through the post method in WeChat Mini Programs (self-built login method) are currently in clear text. Is there any good way to encrypt the data (do not allow plaintext transmission), so as to improve security. ...
my Mini Program, after opening it, first go to the-> login page and successfully log in to save the token obtained by the server to globalData (the expiration time of token is 1 hour), then go to the index page, and then exit Mini Program. enter Mini Pr...
use the variable news to save the news data obtained from the interface :api.xxx.com api news ?pageNumer=1&pageSize=50 js: this.setData({ news:data.data }) wxml: <block wx:for="{{news}}" wx:for-item="new"> <view&g...
found that writing class= xxx doesn t work, and only inline styles can be assigned. How can it be solved without in-line use? ...
