Using Math.floor(Math.random() ) with an object JavaScript

Question

I trying to write a little practice program to get better at JavaScript. It's a random exercise generator. The idea is it picks an exercise at random and logs it to the console. The exercises are sorted in an object and I'm trying to use  a function with Math.random to randomly pick an exercise from that object. But I'm not sure why my code isn't working? The function generates a number then feeds it to the objects index, so don't know why it's not working?
const theBigExercise = {
    exercise: "Bench Press",
    exercise: "Shoulder Press",
    exercise: "Deadlift",
    exercise: "Squats"
};
function mainExercise() {
    let randomMain = Math.floor(Math.random() * 4);
console.log(theBigExercise.exercise[randomMain]);

return randomMain;
}

Jeff Muday · Accepted Answer

It's great your showing your code and ideas-- good stuff!
I think you meant to have a single key/value pair with an array.  That makes this work.
Good luck with your JavaScript journey!
```javascript
const theBigExercise = {
    exercise: ['Bench Press',  'Shoulder Press',  'Deadlift' , 'Squats']
}
function mainExercise() { 
    let randomMain = Math.floor(Math.random() * theBigExercise.exercise.length);
    console.log(theBigExercise.exercise[randomMain]);
    return randomMain;
}
```

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Chris Roper

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Using Math.floor(Math.random() ) with an object JavaScript

1 Answer

Jeff Muday

Jeff Muday

Chris Roper

Chris Roper