check if string contains any number js code example
Example 1: javascript check if string includes numbers
/**
* Function to check if a string contains any numbers
* @author Sebastian Keable
* @param {String} str - String to be checked.
* @returns {Boolean} str - Result of the check.
*/
function containsNumbers(str){
var regexp = /\d/g;
return regexp.test(str);
};
// use function below
containsNumbers("Here are some Numbers 2123"); // => true
containsNumbers("Here are no Numbers"); // => false
Example 2: how to check if a string contains numbers in javascript
/**
* Function to check if a string contains numbers
* @author Okoro Redemption
* @param {String} str - The string to be checked.
* @returns {Boolean} str - The result of the check.
*/
function hasNumbers(str){
var regexp = /d/g;
return regexp.test(str);
};
// use function below
hasNumbers("I am 20years old"); // => true
hasNumbers("I am a boy"); // => false