使用 JavaScript 正则表达式替换逗号?

javascriptweb developmentobject oriented programming更新于 2025/11/17 19:56:17

假设以下是带有逗号 − 的字符串

"My Favorite subject is,"
"My Favorite subject is, and teacher name is Adam Smith"
"My Favorite subject is, and got the marks 89"

要替换逗号,请使用 replace,其中使用正则表达式。以下是代码 −

示例

const makingRegularExpression = /,(?=[^,]*$)/;
replaceComma("My Favorite subject is,");
replaceComma("My Favorite subject is, and teacher name is Adam Smith");
replaceComma("My Favorite subject is, and got the marks 89");
function replaceComma(values){
   console.log(values, " ==== replaced by JavaScript ==== ", values.replace(ma
   kingRegularExpression, " JavaScript"));
}

要运行上述程序,您需要使用以下命令 −

node fileName.js.

这里,文件名是 demo164.js。

输出

这将产生以下输出 −

PS C:\Users\Amit\javascript-code> node demo164.js
My Favorite subject is, ==== replaced by JavaScript ==== My Favorite sub
ject is JavaScript
My Favorite subject is, and teacher name is Adam Smith ==== replaced by
JavaScript ==== My Favorite subject is JavaScript and teacher name is Ad
am Smith
My Favorite subject is, and got the marks 89 ==== replaced by JavaScript
==== My Favorite subject is JavaScript and got the marks 89

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