Within a function, I have the following statement:
Math.random() > 0.5 ? 'spikes' : 'slime'
I am interested in adding one more variable, let's call it 'stone', and having the program randomly choose between those three options. How can I modify the statement to achieve this without utilizing arrays? Any guidance on this matter would be greatly appreciated as I am a novice and finding difficulty comprehending this open source code.
Using an array is definitely the optimal choice:
var result = ['spikes', 'slime', 'stone'][Math.floor(Math.random() * 3)];
console.log(result);While switch/case can work, it requires more code compared to using an array:
function getRandom() {
var num = Math.floor(Math.random() * 3);
switch (num) {
case 0:
return 'spikes';
case 1:
return 'slime';
default:
return 'stone';
}
}
console.log(getRandom());Using arrays is an efficient method. All you need to do is create an array with the options you want and then randomly select one.
Array.prototype.selectRandom = function() {
return this[Math.floor(Math.random() * this.length)];
}
// example without modifying Array.prototype
function chooseRandom(arr) {
return arr[Math.floor(Math.random() * arr.length)];
}
var items = ['apple', 'banana', 'cherry', 'date', 'orange', 'pear', 'strawberry'];
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