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聊聊正则的正预测先行断言, 断言自身出现的位置的后面能匹配表达式exp
找出如下字符串中的规定数字后面必须有px
const str = '1pt 2px 3em 4px'
正则
/\d(?=px)/g
在线调试
The text was updated successfully, but these errors were encountered:
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零宽断言之正预测先行断言(?=exp)用法
示例
找出如下字符串中的规定数字后面必须有px
正则
/\d(?=px)/g
在线调试
The text was updated successfully, but these errors were encountered: