CODEWITHSUNDEEP
javascriptjavascript-objects
Swagnik Dutta
Swagnik Dutta

Reputation: 351

How to assign same random number to more than one variable while creating new objects?

My javascript code looks something like this:

var balls = [];
var size = 10;

for(var i=0; i<size; i++){

    balls.push({
        x: 100,
        y: 100,
        radius: getRandomInt(20,50),
        mass : //here i want mass to have same value as that of radius.
    })
}

As I'm pushing newly created objects in my array of objects, I want the variables radius and mass to have same random number returned by getRandomInt(20,50).

How do I achieve that? Writing mass: radius or mass: this.radius doesn't seem correct.

Thanks!

Upvotes: 1

Views: 68

Answers (2)

Dalin Huang
Dalin Huang

Reputation: 11342

Store(assign) the random number to a temp variable then use it within the current scope.

var balls = [];
var size = 10;

for(var i=0; i<size; i++){
    var temp = getRandomInt(20,50);
    console.log('this temp: ' + temp);
    balls.push({
        x: 100,
        y: 100,
        radius: temp,
        mass : temp
    })
}


function getRandomInt(min,max){
  return Math.floor(Math.random() * (max - min + 1) + min);
}

Upvotes: 3

Liquidchrome
Liquidchrome

Reputation: 904

use a global variable and assign it to that when you run the function

var balls = [];
var size = 10;
var rndNum=0;

for(var i=0; i<size; i++){
getRandomInt(20,50);
    balls.push({
        x: 100,
        y: 100,
        radius: rndNum,
        mass : rndNum
    })
}

function getRandomInt(x,y){
rndNum=//do random math and assign to rndNum
}

Upvotes: -1

Related Questions