SOURCE

const arr = [{a:'data'},{a:'code'},{a:'data.total'},{a:'data.list'},{a:'daca.last'}]


function sortFn(arr,attr) {
    let result1 = arr.map((item)=>{return item[attr]}).sort()
    let result2 = []
    result1.forEach(item=>{
        result2.push(arr.find((el)=>{return el[attr] === item}))
    })
    return result2
}

console.log(sortFn(arr,'a'))