Search Insertion Position

My Solution:

/**
 * @param {number[]} nums
 * @param {number} target
 * @return {number}
 */
var searchInsert = function(nums, target) {
    let pos = nums.indexOf(target);
    
    if (pos < 0) { 
        nums.push(target);
        nums.sort((a,b) => a-b);
        pos = nums.indexOf(target);
    }  
    
    return pos;
};