once the default value of the parameter is set, the parameter forms a separate context when the function is declared to initialize. When initialization is complete, the scope disappears. This syntax behavior is not an extension of the function when th...
Hello everyone, I have a requirement now. Now, for example, I have a class. There are no specified functions in the class. The effect I need to do is object.fun ( kwargs) or objcet.func_path.func ( kwargs) . object is my instantiated object, and then ...
I am a rookie. I have a doubt about the following code. The code is as follows: function showPrimes(n) { nextPrime: for (let i = 2; i < n; iPP) { for (let j = 2; j < i; jPP) { if (i % j == 0) continue nextPrime...
Today, we look at the problems encountered in the authoritative Guide to javascript, which describes that there is a subtle difference between functions and "executable object (callable object) " in Javascript. All functions are executable, but an obje...
assume that the original data id type time 1 1 201X-XX-XX XX:XX 21 201X-XX-XX XX:XX 3 1 201X-XX-XX XX:XX 4 2 201X-XX-XX XX:XX 52 201X-XX-XX XX:XX query statement Select t.typepart. TimeMAX (t.id), t.* FROM t WHERE t.time between 2018-08-01 ...
question: the ajax request initiated within a function will get a code, so as a b function, how to get the return value (code) of a function? The b function is triggered by other events. ...
Code written by colleagues function tableVue(tableData){ var tableData = tableData; * vue * var tableV = new Vue({ el: -sharptable , data: { item:[] }, mounted: function () { ...
ask for an explanation because I learned es6, directly at the beginning. Es6, has always been in the class way of ES6, and function has not been used much. ...
I want to put multiple independent if statements in a function; such as: function(){ if(){ return true if }else{ return false if }; if(){ }else{ }; if(){ }else{ }; }; if the ...
Let me ask you a question. has made a new wodpress theme by myself. What code can I add to functions to load the previously installed wordpress plug-in into my new theme? ...
hypothetical function number($id){ .... sizeof($array); } <?= number(id);?> when number is complete, there will be a value how can I write to my function so that it will be printed ...
export default class Base extends Component<Props> { constructor(props) { super(props); console.log("Base this",this) this showToast renderModal } * *Toast * * showToast=(msg)=>{ cons...
first of all, let s talk about my problem. I m currently building a project using webpack + typescript to define a class: NetData. requirements are as follows: there is a frequently used function: (netdata: NetData) = > void . I wrote an alias u...
suppose I generate a value on some if faces $name if(xxx==xxx){ if(xxx==xxx){ if(xxx==xxx){ $name = xxx; } } } I want to add $name to the outside of if to use so what should I do?! ...
I write curl on a function like this: function httpRequest ($api, $data_string) { $ch = curl_init($api); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST"); curl_setopt($ch, CURLOPT_POSTFIELDS, $data_st...
there is a strange question suppose I declare $self = $_SERVER[ PHP_SELF ]; then I wrote a function below $self = $_SERVER[ PHP_SELF ]; function report(){ echo $self; } and then I ll do another one report(); he will say Undefined vari...
here I abstract the actual business I try to create a class that has the following methods: import types class A: def __init__(self,num): self.num = num self.add_prop(10) -sharp 10 def add_prop(self, n): f...
whenever I press Router, it will extract the ip, of the relevant router from the database and put it in the list-group on the right list-group ? < hr > def getdata(request): qd = request.GET[ ic-element-id ] print (qd) device_list = ...
this.$element.trigger(`init.zf.${pluginName}`); I don t understand very well, there is no declaration of any events like "init.zf.xxx " in the code, so what does this trigger trigger? ...
<button id="b1" value="receive">receive< button> <button id="b2" value="reject">reject< button> js var el = document.getElementsByTagName("button"); el.addEventListener("c...
var a = [ {id:1,name : "Jack"}, {id:2,name : "Lucy"}, {id:3,name : "Tom"} ] * var b = {id:3,name : "Joy"} var b = {id:4,name : &q...
HTML and PHP characters are both utf-8,. Why are there garbled codes ? < meta http-equiv= "Content-Type " content= "text html; charset=utf-8 " > header ( "content-type:text html;charset=utf-8 "); mysql_query ( "set names utf-8 "); ...