Explanation
1. The number of curly bracket specifiers can be used to specify the upper and lower limits of the matching pattern. But sometimes only a specific number of matches is needed.
2. To specify a certain number of matching patterns, just place a number between the curly brackets.
Example
要求
修改正则表达式timRegex，以匹配仅有四个字母 m 的单词 Timber。
let timStr = "Timmmmber";
let timRegex = /change/; // 修改这一行
let result = timRegex.test(timStr);
参考
let timStr = "Timmmmber";
let timRegex = /tim{4}ber/i; // 修改这一行
let result = timRegex.test(timStr);The above is the detailed content of How to match specific quantity in javascript. For more information, please follow other related articles on the PHP Chinese website!
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