[LeetCode][JavaScript] 1. TwoSum

var twoSum = function(nums, target) {
    let obj={}
    for (let i=0; i<nums.length; i++){
        let e= nums[i];
        let index=i;
        if(obj[e]!==undefined){
            let ansarr= [obj[e],index]
            let intarr=ansarr.map(e=>Number(e))
            return intarr;
        }
        else{
        obj[target-e]=index;
        }
    }
};

TwoSum