look at the following code: function test(){ console.log(this === window); show(); window.show(); function show(){ console.log(this === window, fn ); } } function show(){ console.log(this === window, local ); } tes...
var a = 10; var obj1 = { a: 20, fn: (function() { this.a *= 2; a = 5; var a = 6; return function() { this.a *= a; console.log(a) } })() } var obj2 = { a: 30 } var fn = obj1.f...
A topic about the scope of JS functions related codes var xyx = 1; function fx(){console.log(xyx)} var xyx = 2; fx(); The result of the output is 2. isn t it supposed to look from the inside to the outside of the fx function declaration, and the...
Scope = VO + All Parent VOs I think this represents the variable object in this function scopeChain = [[VO] + [VO1] + [VO2] + [VO nesti1]]; this represents all the variable objects in the global environment All Parent VOs. ...
Why the difference between the two is wrong in the first place? it feels like a scope, but I can t tell why. Is there a specific first ? function e (v) { console.log(w) } function a(z){ return function b(y) { return function c(x) { ...
in the part where thinkphp5 is used as the site configuration item to take effect in real time read the data in the configuration table in the app_init hook function, which can be read in all pages. My idea is to use $GLOABLS. But I see other people ...
I have just learned python and encountered some problems about the scope of variables, as follows: the following is not very clear var a = 3 const f = () => { a += 4 console.log(a) } a() 7 f() 7 in js , you can not only access gl...
Code written by colleagues function tableVue(tableData){ var tableData = tableData; * vue * var tableV = new Vue({ el: -sharptable , data: { item:[] }, mounted: function () { ...
var a= 1; function fn1(){ alert(a); a = 2; } fn1(); alert(a); output 1 first, and then output 2 I would like to ask the browser about the process of performing this, and ask for advice ...
function student () { var name = xxx ; var getName = function () { return name } var setName = function (newName) { name = newName; } return { getName: getName, setName: setName, name: na...
how do you explain the relationship between spring scope and threads? Is there any relevance? the problem is as follows: spring scope is simulated in singleton mode, so it is considered that multiple requests for the same address will be executed seq...
what I want to achieve is that after clicking publish, the latest message is displayed at the top and animated (transparency from 0 to 1, height from 0 to 30px). In order to make the message appear at the top, I use this.list.unshift (this.msg) instead ...
current practice: put the statistical code directly in index.html; problem: cannot count the url; during route hopping <script type="text javascript">var cnzz_protocol = (("https:" == document.location.protocol) ? " ht...
how to change the term effect on phpstorm to this on iterm2 the main problem is front jagged, no iterm2 neat problems with installing zsh on mac show the effect of zsh on phpstorm zshiterm2 ...
when I install cnpm, I prompt the following error (node:v8.11.1 npm:5.6.0 on centos6.9) npm err! Path download node-v8.11.1-linux-x64 lib node_modules cnpm node_modules npm node_modules JSONStream npm-shrinkwrap.json npm err! Code ELOOP npm err! Er...
The name of the image has also been changed to its own user name project name , but an error is still reported during push, and no error is found in the comparison. What s the problem? ...