假设以下是我们带逗号的字符串-
"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,并在其中使用正则表达式。以下是代码-
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.
在这里,我的文件名为demo164.js。
输出结果
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