JavaScript数组按首字母排序

法一

let arr = [
    {
        name:'cas'
    },
    {
        name:'ras'
    },
    {
        name:'das'
    },
    {
        name:'aas'
    },
]
arr.sort((a,b)=>{
     return a.name[0].charCodeAt(0)-b.name[0].charCodeAt(0)
})

console.log(arr);

法二

let arr = [
    {
        name:'cas'
    },
    {
        name:'ras'
    },
    {
        name:'das'
    },
    {
        name:'aas'
    },
]
arr.sort((a,b)=>a.name[0].localeCompare(b.name[0]))

console.log(arr);