How to Convert an Array into an Object

Question

I'm trying to make a circle from a radius and x,y coordinate. I have it all done except the array is not the correct format for my use. I get:

[
    "X_PROPS:40,Y_PROPS:0",
    "X_PROPS:39.99390780625565,Y_PROPS:0.6980962574913405",
    "X_PROPS:39.97563308076383,Y_PROPS:1.3959798681000388",
    "X_PROPS:39.94518139018295,Y_PROPS:2.093438249717753"
]

but I need:

[
    {X_PROPS:40,Y_PROPS:0},
    {X_PROPS:39.99390780625565,Y_PROPS:0.6980962574913405},
    {X_PROPS:39.97563308076383,Y_PROPS:1.3959798681000388},
    {X_PROPS:39.94518139018295,Y_PROPS:2.093438249717753}
]

I tried this:

function spec(radius, steps, centerX, centerY){
  var xValues = [centerX];
  var yValues = [centerY];
  var result = [];
  for (var i = 0; i < steps; i++) {
    xValues[i] = (centerX + radius * Math.cos(2 * Math.PI * i / steps));
    yValues[i] = (centerY + radius * Math.sin(2 * Math.PI * i / steps));

    result.push('X_PROPS:'+ xValues[i]+','+'Y_PROPS:'+ yValues[i]);
  }

  return result;

}
console.log(spec(40,360,0,0))

Ori Drori · Accepted Answer · 2019-12-03 19:23:56Z

5

This expression 'X_PROPS:'+ xValues[i]+','+'Y_PROPS:'+ yValues[i] creates a string. Create an object literal instead:

function spec(radius, steps, centerX, centerY) {
  var result = [];
  for (var i = 0; i < steps; i++) {
    result.push({
      X_PROPS: (centerX + radius * Math.cos(2 * Math.PI * i / steps)),
      Y_PROPS: (centerY + radius * Math.sin(2 * Math.PI * i / steps))
    });
  }

  return result;

}
console.log(spec(40, 360, 0, 0))

answered Dec 3, 2019 at 19:23

Ori Drori

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