我如何创建一个reg exp或数组来改变这一点？

const input = "This is a test string with $<3> unwanted characters.";
const cleanedInput = input.replace(/\$<3>/g, '');
console.log(cleanedInput); // 输出: "This is a test string with  unwanted characters."

const input = "This is a test string with $<3> and other unwanted characters.";
const unwantedStrings = ["$<3>", "other unwanted characters"];
let cleanedInput = input;

unwantedStrings.forEach(unwanted => {
  const regex = new RegExp(unwanted, 'g');
  cleanedInput = cleanedInput.replace(regex, '');
});

console.log(cleanedInput); // 输出: "This is a test string with  and ."

import re

input_text = "This is a test string with $<3> unwanted characters."
cleaned_input = re.sub(r'\$<3>', '', input_text)
print(cleaned_input)  # 输出: "This is a test string with  unwanted characters."

val input = "This is a test string with $<3> unwanted characters."
val cleanedInput = input.replaceAll("\\$<3>", "")
println(cleanedInput)  // 输出: "This is a test string with  unwanted characters."