often see articles that introduce call or apply, and then use the following code as an example. function identify() { console.log("Hello,I m " + this.name); } let me = { name: "Kyle" }; let you = { name: "Reader" };...
as shown in the figure, there are two times for each request, the last column? Who can explain? ...
npm err! Code ELIFECYCLE npm err! Errno 3221225725 npm err! Kr-vue@1.0.0 dev: cross-env NODE_ENV=development node server index.js npm err! Exit status 3221225725 npm err! npm err! Failed at the kr-vue@1.0.0 dev script. npm err! This is probably ...
at present, the page is laid out in rem, how to implement large, medium and small fonts? ...
parse post 1: 2:girlletterrequest 3::http: fanyi.baidu.com sug 4:formdata kw:girl 5:return json==> need package json from urllib import parse,request -sharpmanage json moudel import json 1:data urlopen 2:json style result ...
A page written by bootstrap: : : this is the background code: @PostMapping(value = "forgetPassword", produces = "application json;charset=utf-8") @ResponseBody public String forgetPassword(@RequestParam("email&quo...
purpose: to give the json data of nodes and connections, and draw a flow graph with vue. The flow graph in the artboard is composed of several directed graphs , the artboard in the flow graph is required to be scaled , the node size can be set , the ...
Gods, how to set up pictures when sharing Wechat s web page in uc browser? Some of his phones read the first picture directly, while others did not have a picture. It s annoying. ...
the new node project is very simple, just app.post ( " upload ", router.doPost); app.get ( " getat ", router.doGetAT); actually wants to expose these two interfaces. my public network ip of Aliyun is http: 112.74.191.12. I deployed a project b...
question: Function A () {this.fn} what if B. prototype = new A () prototype chain inherits, it will pollute the variable space of B, for example, there is fn in B? ...
here s the thing! the project uses react + axios , and token needs to be set in header for axios to send requests. The problem with is that token is returned from the login api interface. So obviously, this token is worth saving as a global variab...
who can give an example of webexcel s dom project, thank you very much ...
currently encapsulated table plug-ins are as follows: (function ($) { function Table() { this.config = { } }; Table.prototype = { table rend: function (config) { return this; ...
vue project, a parent component contains two same paging components. If I click on the next page event of one of the pages, I will pass this event to the parent component. How does the parent component know which child page component passed it ...
now there is an implementation requirement that when the page scrolls up and down, I need to get the label scrolled to the current visual area from time to time. Is there any way to do that? at present, it is known that it is not easy to use the visi...
I want to get the information in the subcomponent, but I don t know why I can t get the data this is the subcomponent ts file html Why can t I get the data in the subcomponent ...
when I copy the files of a project into another folder intact, I re-start, the code every time I change it. Webpack doesn t update the code. What s going on? ...
change host to 0.0.0.0, mobile phone can access, but only on iPhone access is the white screen, PC and Android are normal. Notice that when I use IOS9.3 and IOS11, the screen is white. Try a lot of methods on the Internet are ineffective! ...
[question]: what does this in new constructor, ordinary function call, object method call, call call, apply call mean? ...
I m going to start developing Mini Program recently. I don t know which is better between mpvue and wepy. It seems that they all have their own holes. I just want to ask if you think there are fewer holes. ...
I want to use hibernate validation to implement back-end data validation. As required, I need to introduce EL dependencies. But when I added the javax.el dependency to .run, the following bugs, appeared and I looked up a lot of answers online. But still...
front-end items are often cached by browsers , but in some emergencies, it is often hoped that the cached html and js will not take effect, but go to the server to request the latest html , js and other files. scenario: when a company s busin...
the problem is this: when you use v-for to render a group of data, the backend will return a timestamp field to me. I need to time-stamp the page and start the countdown. Now the data can be printed on the console, but the page does not have Synchronize...
Enterprise users do not have a very good experience of printing directly with pdf on the web side. Currently, testing the feasible way, the client side installs a program (websocket service), and the web side communicates with the locally installed progr...
problem description just want to match {0}, {1}, in the string template. Wait, for example: var str1 = "I am {0}, age {1} "; str1.format ( "aa ", 12); then str1: I am aa, age 12 related codes String.prototype.format = function (args) { var resul...