normalize() 方法会按照指定的一种 Unicode 正规形式将当前字符串正规化.
str.normalize([form])
;
form
RangeError
form
传入了非法的参数值, 则会抛出 RangeError
异常.// Initial string
// U+1E9B: LATIN SMALL LETTER LONG S WITH DOT ABOVE
// U+0323: COMBINING DOT BELOW
var str = "\u1E9B\u0323";
// Canonically-composed form (NFC)
// U+1E9B: LATIN SMALL LETTER LONG S WITH DOT ABOVE
// U+0323: COMBINING DOT BELOW
str.normalize("NFC"); // "\u1E9B\u0323"
str.normalize(); // same as above
// Canonically-decomposed form (NFD)
// U+017F: LATIN SMALL LETTER LONG S
// U+0323: COMBINING DOT BELOW
// U+0307: COMBINING DOT ABOVE
str.normalize("NFD"); // "\u017F\u0323\u0307"
// Compatibly-composed (NFKC)
// U+1E69: LATIN SMALL LETTER S WITH DOT BELOW AND DOT ABOVE
str.normalize("NFKC"); // "\u1E69"
// Compatibly-decomposed (NFKD)
// U+0073: LATIN SMALL LETTER S
// U+0323: COMBINING DOT BELOW
// U+0307: COMBINING DOT ABOVE
str.normalize("NFKD"); // "\u0073\u0323\u0307"
Specification | Status | Comment |
---|---|---|
ECMAScript 2015 (6th Edition, ECMA-262) String.prototype.normalize |
Standard | Initial definition. |
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | 34 | 31 (31) | 未实现 | 未实现 | 未实现 |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | 未实现 | 34 | 未实现 bug 864843 |
未实现 | 未实现 | 未实现 |