javascript 正则判断身份证号 in javascript

You can use the following regular expression to validate Chinese ID cards in JavaScript:

index.tsx
function validateIDCard(idCard) {
  var reg = /(^\d{15}$)|(^\d{18}$)|(^\d{17}(\d|X|x)$)/;
  return reg.test(idCard);
}
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This regular expression checks for either 15 digits or 18 digits, or 17 digits followed by either a digit or the letter X or x. You can use this function to validate ID cards in your JavaScript code as shown below:

index.tsx
var idCard = "12345678901234567X";
if (validateIDCard(idCard)) {
  console.log("Valid ID card");
} else {
  console.log("Invalid ID card");
}
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In this example, we pass a sample ID card number to the validateIDCard() function and check if it is valid or not. The function returns true if the ID card is valid, and false otherwise.