为了在结果字符串中使用 $ ，请使用 $$ as $ 在JavaScript正则表达式和字符串替换中有特殊含义>方法： https://developer.mozilla.org/en/ JavaScript / Reference / Global_Objects / String / replace＃Specifying_a_string_as_a_parameter

In order to use $ in resulting string, use $$ as $ has special meaning in JavaScript Regular Expressions and String replace method: https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/String/replace#Specifying_a_string_as_a_parameter