Intl.collator.compare

该Intl.Collator.prototype.compare属性返回一个getter函数，该函数根据此Collator对象的排序顺序比较两个字符串。

语法

collator.compare(string1, string2)

参数

string1string2字符串相互比较。

描述

这个函数将会返回一个数字，这个数字是按顺序比较string1和string2的字符：如果string1的字符在string2之前则会返回负数，如果string1的字符在string2之后则会返回正数; 如果它们别认为是相等的则会返回0

例子

使用compare进行数组排序

使用comparegetter 返回的函数对数组进行排序。请注意，该函数与所选的collator相关，所以它可以直接传递给Array.prototype.sort()。

var a = ['Offenbach', 'Österreich', 'Odenwald'];
var collator = new Intl.Collator('de-u-co-phonebk'
a.sort(collator.compare
console.log(a.join(', ')
// → "Odenwald, Österreich, Offenbach"

使用compare在array搜索

使用comparegetter 返回的函数来查找数组中的匹配字符串：

var a = ['Congrès', 'congres', 'Assemblée', 'poisson'];
var collator = new Intl.Collator('fr', { usage: 'search', sensitivity: 'base' }
var s = 'congres';
var matches = a.filter(v => collator.compare(v, s) === 0
console.log(matches.join(', ')
// → "Congrès, congres"

规范

Specification	Status	Comment
ECMAScript Internationalization API 1.0 (ECMA-402)The definition of 'Intl.Collator.prototype.compare' in that specification.	Standard	Initial definition.
ECMAScript Internationalization API 2.0 (ECMA-402)The definition of 'Intl.Collator.prototype.compare' in that specification.	Standard
ECMAScript Internationalization API 4.0 (ECMA-402)The definition of 'Intl.Collator.prototype.compare' in that specification.	Draft

浏览器兼容性

Feature	Chrome	Edge	Firefox (Gecko)	Internet Explorer	Opera	Safari
Basic support	24	(Yes)	29 (29)	11	15	No support

Feature	Android	Chrome for Android	Edge	Firefox Mobile (Gecko)	IE Mobile	Opera Mobile	Safari Mobile
Basic support	No support	26	(Yes)	56.0 (56)	No support	No support	No support