var str = "dogdogdog"; var str2 = str.replace(/dog/g,"cat"); console.log(str2);
参考:https://www.jb51.net/article/23762.htm?tdsourcetag=s_pcqq_aiomsg
str = "dog dog dog12"; str = str.replace(new RegExp("[d]","gm"),"_"); console.log(str);
输出:_og _og _og12

参考:https://www.runoob.com/jsref/jsref-obj-regexp.html
javascript - 如何使用正则表达式在指定字母(即A、D、F、R)和数字之间插入括号?
参考:https://stackoverflow.com/questions/76403788/
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