var arr[2];
for(i=0; i<arr.length; i++) {
arr[i] = prompt() * 1;
}
But i was wondering you can do like var arr = [x,y,z] = [1,2,3]; can you do a loop for "x, y, z" with a prompt?
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3 Answers
You could also do this by using the Array() constructor and Array#map(). The Array#fill() is necessary in order to let map iterate through the whole array:
var [x, y, z] = Array(3).fill().map(prompt).map(Number)
console.log(x, y, z)This approach uses the destructuring assignment syntax.
2 Comments
Stojan Spasic
Thank you so much for making it easyer
Patrick Roberts
@StojanSpasic all those methods have links, just click on them.
Just create an array with prompts and assign it to variables:
var prompts = [
prompt('0', '0'),
prompt('1', '1'),
prompt('2', '2'),
];
var [x, y, z] = prompts;
console.log(x, y, z);4 Comments
Patrick Roberts
Neither of these actually do anything with the
prompt()... FYI, I'm not the one that downvoted, I'm just making an observation.
P.S.
@PatrickRoberts, what do you mean? What should we do with
prompt()?P.S.
@PatrickRoberts, if you mean that i didn't pass any default content - the OP didn't say, that he needs it. But i have updated the answer with prompt's content
Patrick Roberts
I meant you didn't assign it to anything... they're just a bunch of pointless prompts that don't actually store anything to memory.
You cannot store variable references in an array, you could store the variables in an object, however:
var x;
var y;
var z;
var arr = {
x,
y,
z
};
for (key in arr) {
arr[key] = prompt() * 1;
}
console.log(arr);