Question

Angular电子邮件REGEX是：

/ ^ [A-Z0-9＃$％＆安培;＆＃39;！？ + / = ^ _`{|}〜.-] + @一个-Z0-9（A-β。 Z0-9？） $ / I

我理解一切，但我不确定我最后的意思是什么。

它是唯一拥有它的REGEX：

var ISO_DATE_REGEXP = /\d{4}-[01]\d-[0-3]\dT[0-2]\d:[0-5]\d:[0-5]\d\.\d+([+-][0-2]\d:[0-5]\d|Z)/;
var URL_REGEXP = /^(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?$/;
var EMAIL_REGEXP = /^[a-z0-9!#$%&'*+\/=?^_`{|}~.-]+@[a-z0-9]([a-z0-9-]*[a-z0-9])?(\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$/i;
var NUMBER_REGEXP = /^\s*(\-|\+)?(\d+|(\d*(\.\d*)))([eE][+-]?\d+)?\s*$/;
var DATE_REGEXP = /^(\d{4})-(\d{2})-(\d{2})$/;
var DATETIMELOCAL_REGEXP = /^(\d{4})-(\d\d)-(\d\d)T(\d\d):(\d\d)(?::(\d\d)(\.\d{1,3})?)?$/;
var WEEK_REGEXP = /^(\d{4})-W(\d\d)$/;
var MONTH_REGEXP = /^(\d{4})-(\d\d)$/;
var TIME_REGEXP = /^(\d\d):(\d\d)(?::(\d\d)(\.\d{1,3})?)?$/;

Answer 1

它是不区分大小写的标志：

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp

Answer 2

i修饰符用于执行不区分大小写的匹配。

Answer 3

i表示不区分大小写。有关详细信息，请参阅此处：matchsearchhttps：//www.w3schools.com/jsref/jsref_regexp_i.asp

Answer 4

ignore case或case-insensitive匹配标志。

A和a意味着同样的事情。

var regex = /pattern/flags;。以下是用于高级搜索的标志。

在/ i中REGEX完成是什么意思

4 个答案: