Answers for "how to check a string contains only numbers in javascript"

3

check if string only contains integer digits numbers javascript

let val = '1234567890' 
let isnum = /^\d+$/.test(val);
if (isnum) {
  // val is a number
}
Posted by: Guest on November-03-2020
-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
Posted by: Guest on April-19-2021

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