JavaScript：对ASCII字符串和非ASCII字符串的混合数组进行排序

Question

For example I have an array

let fruits = ["apple", "яблоко", "grape"]

When I do

let result = fruits.sort()

Result will be

["apple", "grape", "яблоко"]

But I want unicode items to be at the start of result array.

Answer 1

You can check to see if the string starts with a word character in the sort function:

 const fruits = ["apple", "яблоко", "grape"]; const isAlphabetical = str => /^\\w/.test(str); fruits.sort((a, b) => ( isAlphabetical(a) - isAlphabetical(b) || a.localeCompare(b) )) console.log(fruits); 

A more robust sorting function would check each character against each other character:

 const fruits = ["apple", "яблоко", "grape", 'dog', 'foo', 'bar', 'локоfoo', 'fooлоко', 'foobar']; const isAlphabetical = str => /^\\w/.test(str); const codePointValue = char => { const codePoint = char.codePointAt(0); return codePoint < 128 ? codePoint + 100000 : codePoint; }; fruits.sort((a, b) => { for (let i = 0; i < a.length; i++) { if (i >= b.length) return false; const compare = codePointValue(a[i]) - codePointValue(b[i]); if (compare !== 0) return compare; } return true; }) console.log(fruits);