This question already has answers here:
What does this symbol mean in JavaScript?
(1 answer)
What does curly brackets in the `var { ... } = ...` statements do?
(4 answers)
What do {curly braces} around javascript variable name mean [duplicate]
(1 answer)
Closed 4 years ago.
I was reading some JavaScript code and saw a line of code similar to this.
const {name, password, email} = user;
I tried searching around but could not figure out what this syntax is called so I am not able find the documentation. Is this a new JavaScript syntax? What is it called? What does it do exactly?
Related
This question already has answers here:
In Typescript what does <T> mean?
(4 answers)
What does enclosing a class in angle brackets "<>" mean in TypeScript?
(2 answers)
Closed last month.
In this code below, what does Promise<LetterService[]> mean?
Is the LetterService[] saying create an array with LetterService objects inside it?
What are the <> indicating here?
export default interface LetterService {
GetLetters(): Promise<LetterService[]> }
This question already has answers here:
Javascript || operator
(5 answers)
Javascript Shorthand - What Does the '||' Operator Mean When Used in an Assignment? [duplicate]
(6 answers)
JavaScript OR (||) variable assignment explanation
(12 answers)
Closed 3 months ago.
The community reviewed whether to reopen this question 3 months ago and left it closed:
Original close reason(s) were not resolved
I've been given a function by a client to create a custom script for tracking purposes which is fine, but being new to JS I'm having trouble understanding this line of code:
d[p]=d[p]||function(){(d[p].q=d[p].q||[]).push(arguments);};
function example is:
(function (d,e,k,u,p) {
d[p]=d[p]||function(){(d[p].q=d[p].q||[]).push(arguments);};
var a=e.createElement(k),b=e.getElementsByTagName(k)[0]; a.async=1;a.src=u;b.parentNode.insertBefore(a, b);
}(window,document,'script','https://www.example.com/bundle.js','stringname'));
If anyone could explain it that would be great
Just want to understand the statement better, it works fine and I can copy and paste with the correct url and string name but better if I understand the statement
This question already has answers here:
Why doesn't my arrow function return a value?
(1 answer)
Curly Brackets in Arrow Functions
(3 answers)
When should I use a return statement in ES6 arrow functions
(6 answers)
Closed 1 year ago.
The following code works:
let check = checkingImages.every((item)=>item.classList.contains('matched'))
But this one doesn't:
let check = checkingImages.every((item)=>{
item.classList.contains('matched')
})
Can someone explain what's the reason for the second code not working, please?
This question already has answers here:
What is the (function() { } )() construct in JavaScript?
(28 answers)
What does this symbol mean in JavaScript?
(1 answer)
Closed 2 years ago.
I know, similar questions have been asked but none answered my question of What does the second () mean?
And also no the syntax is not (function...) rather its just function(a,d){...}(Jquery,...);
Is it that we are making objects of Jquery, I am also using Hammer.js so basically the second paranthesis has (Jquery, Hammer)
This question already has answers here:
How can I do string interpolation in JavaScript?
(21 answers)
Closed 6 years ago.
I have the following code
dt.ajax.url( 'test.php?status=' ).load();
I defined a variable
var status= 55
I wand to add status_2 in the link like this
dt.ajax.url( 'test.php?status=&status' ).load();
How can I do it ?
Try this. You need to concatenate the variable with url
dt.ajax.url('test.php?status='+status).load();