log(match.groups.month) // → 03 console.log(match.groups.day) // → 04 这也是为什么在使用 capture groups 的时候输出里老是有一个 groups === undefined解构小技巧 值得注意的是, named group 其实也是 capture group, 只不过是特殊的 capture group, 所以下面的代码依然可以运行 const re = /(?<...
let regex = /t(e)(st(\d?))/g let string = 'test1test2test3' let matches = [] let match while (match = regex.exec(string)) { matches.push(match) } console.log(matches) // [ // ["test1", "e", "st1", "1", index: 0, input: "test1test2test3", groups: undefined], //...
// groups: {year: "2015", month: "01", day: "02"} // ] console.log(result2.groups.year); // 2015 10.2 在 regex 内使用 Named groups 使用\k<组名>格式来反向引用正则表达式本身中的组,例如: // 在下面的例子中,我们有一个包合的“水果”组。 // 它既可以配“苹果”,也可以配“橘子”...
如果正则里面有了命名分组,那么匹配结果会多了一个groups 的属性,这个属性中包含了一切命名分组的捕获结果。配合上解构大法使用又是一股清流: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 const{groups:{day,year}}=RE_DATE.exec('1999-12-31');console.log(year);// 1999console.log(day);// 31 ...
RegExp named capture groups(正则表达式命名捕获组) 代码语言:javascript 代码运行次数:0 运行 AI代码解释 constregex=/(?<year>\d{4})-(?<month>\d{2})-(?<day>\d{2})/;constmatch=regex.exec('2023-06-25');console.log(match.groups.year);// 2023console.log(match.groups.month);// 06conso...
// Change thisconstname=XRegExp.exec(str,regexWithNamedCapture).name;// To thisconstname=XRegExp.exec(str,regexWithNamedCapture).groups.name; Seethe README on GitHub ⇨for more examples of using named capture withXRegExp.execandXRegExp.replace. ...
varregex=newRegExp(/xyz/,'i');// Uncaught TypeError: Cannot supply flags when constructing one RegExp from another ES 6改变了这种行为。如果RegExp构造函数第一个参数是一个正则对象,那么可以使用第二个参数指定修饰符。而且,返回的正则表达式会忽略原有的正则表达式的修饰符,只使用新指定的修饰符: ...
✔ RegExp named capture groups ✔ Rest/spread operators for object literals (...identifier) ✔ SharedArrayBuffer ECMAScript 2019 ✔Array.prototype.flat,Array.prototype.flatMap ✔String.prototype.trimStart,String.prototype.trimEnd ✔Object.fromEntries ...
For example, using ruby named groups - https://extendsclass.com/regex/ffedfad (password: 123)While editing some unicode symbols in substitution field seems broke parser (play with ¢ symbol) Reply Cyril (admin)-2020-06-24 16:45 Hi, thank you for reporting this bug! Reply Cyril (admin...
The sequence \k within a regex that doesn't have any named capturing groups is treated as an identity escape. The syntax characters ], {, and } may appear literally without escaping if they cannot be interpreted as the end of a character class or quantifier delimiters.Function...