JavaScript 中的负向后查找等效项

JavaScript 中的负向后查找等效项

javascript
const text = "Hello, world! This is a sample text.";
const pattern = /world(?! sample)/;
const result = text.match(pattern);
console.log(result); // Output: [ 'world' ]

javascript
const text = "Hello, world! This is a sample text.";
const pattern = /world( sample)?/;
const result = text.match(pattern);
if (result && !result[1]) {
  console.log(result[0]); // Output: world
}

javascript
const email = "test@example.com";
const pattern = /^[a-zA-Z0-9._%+-]+@(?!example\.com$)[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/;
const result = pattern.test(email);
console.log(result); // Output: false

javascript
const text = "This is a sample text with some sensitive words.";
const sensitiveWords = ["sensitive", "words"];
const pattern = new RegExp(`\\b(?!${sensitiveWords.join("|")})\\b`, "gi");
const result = text.replace(pattern, "***");
console.log(result); // Output: This is a sample text with some *** ***.