request data asynchronously, but lifecycle functions are also asynchronous, so how can you ensure that you get the data before rendering?
request data asynchronously, but lifecycle functions are also asynchronous, so how can you ensure that you get the data before rendering?
before rendering, created,beforeCreate starts to adjust the interface, and then the page is empty as soon as it comes in, and the corresponding part is displayed after it is returned. In this way, rendering and request are asynchronous, waiting for the request to come back before releasing the page (v-if).
your request can be understood in this way?
after I request an API, in beforeCreate, I don't want VUE to continue until the data comes back before executing the life cycle of VUE?
if this is the case, it cannot be done.
for a simple workaround, you can use the v-if idea upstairs.
in addition, it can also be done by the authorities, and it can be done this way.
requests data before the route jumps to this point, and after the next () operation is performed, the lifecycle of VUE execution begins.
data: get data before navigation
ajax is an asynchronous operation. Vue cannot guarantee to get the data before rendering. What vue can do is initialize the visibility:hidden of the page and display the data again.
positive solution upstairs. Due to the existence of asynchronous operation, vue cannot guarantee to get the data before the page is rendered, so the general practice is to hide the page, call the API to obtain the data when created or beforeCreate, and control the page display in the callback function after successfully getting the data. This can avoid the problem of page jumping to the greatest extent
the solution to this problem should be to add a loading. Adding a loading when obtaining data asynchronously means that you are now getting the data, and then rendering it again after obtaining the data
blocking. You can add loadding to avoid page whitespace, and the other means that the page will not jump when the data is loaded again
change the request data into Synchronize
this hook that should be routed
beforeRouterEnter(to,from,next) {
doAjax.then(res => {
//
next(vm => {
//
})
})
}just can t show it. Thank you very much for your advice. ...
< H2 > now there is a strange situation, that is, when I use the Loadmore component, the pull-up load is not performed, only the drop-down refresh is performed. It only executes every time I change the location of the component, but after I refresh it, i...
like this [array [xxx], array [xxx], array [xxx].] merge all xxx in array into one array [xxx.] ...
1. Scrolling loading cannot be achieved with vue-waterfall,. The first screen displays normally. Scrolling to the bottom does not send ajax, and how to modify the current page 2. The code is as follows: script created ...
message is an empty object, var app = new Vue({ el: -sharpapp , data: { message: {}, }, and then in <input ... v-model="message.foo"> <input ... v-model="message.foo.bar"> how do ...
http: www.qqbsmall.com data .; > http: www.qqbsmall.com data .; > http: www.qqbsmall.com data .; > http: www.qqbsmall.com data .; > http: www.qqbsmall.com data .; > http: www.qqbsmall.com data .; > http: www.qqbsmall.com data ....
for projects created with vue-cli, the default webpack configuration is packaged into a single file. Now there is a need to package out many folders. The corresponding html,js and css in different folders have modified some configurations to be in the f...
I introduced another A.vue page in a B.vue page. Now click the method in A to adjust the method in B (with a form) this is the form < el-form: model= "dialogForm.data " > of A. <el-row> <el-input type="hidden" v-mode...
enter a newline character in the reverse apostrophe, which is output as is. How to make the newline character work ...
the resLoader plug-in causes the ios9 browser web page to go blank vue project ...
Vue the first button clicks to jump out of the countdown, and the second button clicks to jump out of the fixed data, but the data that pops out suddenly jumps back to the automatic countdown var app = new Vue ({ el: -sharpapp , data:{ ite...
each time nuxt uses keep-alive, to switch pages, it will empty the data in data, which is inconsistent with the performance of keep-alive in normal vue-cli-built projects. for example, the asynchronously acquired data I loaded in list is switched to i...
The problem with is that I have a vue plug-in (which uses vue install exports and can use plug-ins introduced by vue.use ()), and I want to use vuex to communicate between components in this plug-in. currently there are the following problems: what I...
whether a vue project can set the root domain name of the provider by reading web.config or config.json after packaging. in this way, even if the root domain name is redeployed in the background, the front end of the root domain name does not have to be...
now my project is to package css and js separately, and the directory structure after packaging is the same as before. before packing: csscssimages.. csscss.. .. : webpack.config.js csscss csscss I would like to ask all the great gods, what ...
when submitting the form, I have been reporting 415 errors and tried many ways. My own is not good, nor is my copy colleague s, but my colleague s will not report an error, exactly the same way. I don t know why. html have you ever encountered th...
upload financial bills. The front end parses nearly 300000 data when uploading files. When you click the upload button, you need to send these 300000 pieces of data to the backend. now you will report Message length exceeded maximum allowed length. w...
there is a mobile project currently in testing, using vue (2.2.2) + mint-ui for development, and I don t know how to handle compatibility. What method should be used to determine whether the current environment is working properly? I just looked at t...
nuxt 1.4 uses keepAlive, in nuxt, but I find that when the page component is switched, the data in data will be reset and emptied when entering the interface . Is this his bug? if there is a problem with the setting, how can I modify the setting? ...
use vue to do a nine-grid lucky draw, which is fast at the beginning, slow down after a few laps, and can control where to stop. There is a big lucky draw button in the middle of the prize. How to write the style, ask for advice ...