How to use hyphens in javascript

Explanation

1. The range of matching characters using a hyphen (-) is not limited to letters. Can also match a range of numbers.

2. A series of letters and numbers can be combined in a single character set. In the = character set, the hyphen (-) defines the range of characters to match.

Example

要求
匹配字符串 quoteSample 中的所有字母。
 
注意：一定要同时匹配大小写字母。
let quoteSample = "The quick brown fox jumps over the lazy dog.";
let alphabetRegex = /change/; // 修改这一行
let result = alphabetRegex; // 修改这一行
 
参考
let quoteSample = "The quick brown fox jumps over the lazy dog.";
let alphabetRegex = /[a-z]/ig; // 修改这一行
let result = quoteSample.match(alphabetRegex); // 修改这一行

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