/**
* @param {number[]} nums
* @param {number} target
* @return {number}
*/
var search = function(nums, target) {
let start = 0, end = nums.length - 1
while (start < end) {
let mid = Math.floor((start + end) / 2)
if (nums[mid] == target) {
return mid
} else if (nums[mid] > target) {
end = mid - 1
} else if(nums[mid] < target){
start = mid + 1
}
}
return -1
};
let eg_arr = [-1,0,3,5,9,12];
let eg_value = 6;
console.log(search(eg_arr,eg_value));
