如何编辑JavaScript对象

Question

I'm new to Javascript and I have an object that printed to console gives this :

Object
    mots[4]:"unique"

I would like to edit it to get :

Object
    mots[4].lettre:"unique"

I tried using stringify, split and splice but that didn't work. So what is the 'cleanest' way to do that?

Answer 1

mots[4] = { lettre : "unique" }

or generically..

mots[i] = { lettre : mots[i] }

or for each value in the array you can do..

mots = mots.map(function(x) { return { lettre : x }; });

This will convert every element of the array to be an object with the property lettre with the value of the original element. Learn more about the map function .

 var mots = ['This', 'answer', 'is', 'very', 'unique']; console.log('Before:'); console.log(mots); console.log('mots[4] : ' + mots[4]); mots = mots.map(function(x) { return { lettre : x }; }); console.log('After:'); console.log(mots); console.log('mots[4].lettre : ' + mots[4].lettre); 

Answer 2

You have to assign to it an object.

var a=4;
mots[a]={letter:"unique"};

You can access it using bracket notation.

console.log(mots[a]["lettre"]).

 var mots=[]; for(i=0;i<5;i++){ mots[i]=i; } a=4; console.log(mots); mots[a]={letter:"unique"}; console.log(mots[a]["letter"]);