Iam currently working with a project where project is almost partially completed. So I just saw a some weired code whihc I havent seen before and tried to find it via google and couldnt find anythig.
This is the code
methods: {
getMap() {
let A = this.$store.getters['MAP']
let B = this.$store.getters['MAP2']
return { ...A, ...B}
}
}
What I really wants to know is
return { ...A, ...B}
what does it means ? any reference or any clarification please.
It's javascript spread syntax. What it does is merge two objects by keys, similar to Object.assign. For instance, in the following example, keys from A and B are merged into the final object with values from the latter object taking precedence.
const A = { a: 3, b: 4 }
const B = { c: 5, d: 7, a: 4 }
console.log({ ...A, ...B })In your case, getMap return a combined object with key value pairs from Map and Map2 merged.