在正则表达式的Javascript不匹配特定模式

Question

我有一个MongoDB的查询例如可以包含动态值

[{$group: { _id: '$os_name', count: { $sum: 1 } }},{$sort:{count:-1}},{$out:'newc'},{$group: { _id: '$os_name', count: { $sum: 1 } }}] 
[{$group: { _id: '$browser', count: { $sum: 1 } }},{$sort:{count:-1}},{$out:'deffC'}] 

我想总是一致的一切，而不,{$out:'anything'}

最终的结果是

[{$group: { _id: '$os_name', count: { $sum: 1 } }},{$sort:{count:-1}},{$group: { _id: '$os_name', count: { $sum: 1 } }}] 
[{$group: { _id: '$browser', count: { $sum: 1 } }},{$sort:{count:-1}}] 

Answer 1

您的正则表达式匹配该字符串是这样的：/,\{\$out:'.*'\}/g

let s = `[{$group: { _id: '$os_name', count: { $sum: 1 } }},{$sort:{count:-1}},{$out:'newc'},{$group: { _id: '$os_name', count: { $sum: 1 } }}] 
 
     [{$group: { _id: '$browser', count: { $sum: 1 } }},{$sort:{count:-1}},{$out:'deffC'}]`; 
 

 
s = s.replace(/,\{\$out:'.*'\}/g, ''); 
 

 
console.log(s);