All Questions
53
questions
0
votes
0
answers
36
views
How does this function know to search for my input?
So probably a silly question. How does this function know to replace "obj" with whatever object I put in, and replace "checkProp" with whatever property I put in?
I'm pretty much ...
1
vote
2
answers
715
views
create object property by assign value in a for loop
In this excercise I create 3 function. score() to generate a random Number. generateStudents() to create a list Object. Object has format {student:'name',marks:{...}} as define in generateStudents(). ...
- 29
0
votes
0
answers
15
views
Learning to use functions in objects... I can't understand why my function is outputting undefined [duplicate]
So I am creating a simple object with one of the properties being a function... I cannot figure out why when I call it, it outputs undefined!
Here is the code...
const team = {
partner1: "...
- 157
0
votes
1
answer
163
views
How to create a function that checks if a property exists in an object? [duplicate]
My task is to create a function that checks if a specific property exists in object. I don't understand why the second log returns false when 'b' obviously exists in numbers object. Would be very ...
- 19
1
vote
3
answers
107
views
JavaScript Objects is not recognised by it's property
my program is very simple - it should save movies in array and then print them in JSON format.
The problem is with 'contains()' method (i think). It works well with one-named-movie but it returns null ...
- 55
0
votes
1
answer
98
views
Cannot pass parameter to be property name for an object [duplicate]
const persons = {
name: 'David',
age: 40
};
const myFunction = (x) => {
console.log(persons.x)
};
myFunction('name');
If I pass myFunction('name'), I expect it to print 'David'.
If ...
- 69
0
votes
1
answer
137
views
Pass object and properties by reference in Javascript
I've seen lots of questions about passing objects by reference in Javascript, but not the object and properties by reference. Is it possible?
Right now I only found a way to do it by going through ...
- 5,174
0
votes
3
answers
129
views
Building Calculator, getting Cannot set property 'value' of null
I am building a Calculator and I keep getting this error, I've tried typing it a few different ways but I couldn't figure it out, help, please!
const calculator = {
displayValue: '0',
...
- 15
0
votes
2
answers
57
views
i am trying to store my function call within an object
i am trying to store my function call within an object, so when i refenence the property, it runs the function. this is the code i wrote, but its not working. this is my code so far.
html:
<!...
- 73
-1
votes
2
answers
38
views
Function to create properties of an object?
I'm new to javascript and I'm trying to code a game.
I need to create an object that stocks the height of 10 "columns". These columns must be set to zero. so I need something like this :
var ...
1
vote
1
answer
120
views
Is it a good practise to inject properties into ReactJS functional components using literal dot notation setters?
Fiddling with a React code written by someone else, I stumbled upon this pattern:
// So far so good:
const displayName = 'aComponentsName'
const propTypes = {
// not important
}
const ...
- 3,097
1
vote
2
answers
1k
views
Why I cannot and how I can assign a return value of function to object property?
Thank you for ideas!
Console: "Uncaught TypeError: program.test is not a function..."
let program = {
name: "...something..."
};
program.wantedKeys = program.test();
program.test = () =...
- 1,116
-1
votes
2
answers
47
views
Why is this undefined when I call a functions property?
Here is my code:
function myOuterFunction() {
myInnerFunction();
var myObject = {say: myInnerFunction.myProperty1,
say2: myInnerFunction.myProperty2
...
- 25
0
votes
1
answer
3k
views
Accessing Object Properties in Array VBA
I cannot figure out how to access object properties in an array using VBA. I have created an array like:
Dim objectArray(10) as Variant
Dim counter as Integer 'used to move to next ...
- 328
1
vote
2
answers
832
views
set property value when instance new object in javascript
I want to learn about this syntax below: (this is the three.js library)
var material = new THREE.MeshBasicMaterial( { color: 0x00ff00 } );
What is ( { color: 0x00ff00 } ) ?
I know: ( { property: ...
- 121