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正则 匹配 @#%2@#% 为false 其他情况遇到2 都为 true

image.png
目前这样写,始终无法满足要求


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应该在同一个位置前后都进行断言:

/(?!(?<=@#%)(?=2@#%))2/gi

代码可以写为:

new RegExp(`(?!(?<=@#%)(?=${this.value}@#%))${this.value}`, 'ig')

可以在这里查看测试case


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