Question

How to check whether a string contains only digits in Node.js

Answer 1

function hasOnlyDigits(str) {
    return /^\d+$/.test(str);
}
  
  
console.log(hasOnlyDigits("node.js")); 
  
console.log(hasOnlyDigits("node.js 2024"));
  
console.log(hasOnlyDigits("9034882"));
  
 
      
      
/*
run:
      
false
false
true
      
*/

 

70+ SQL courses for beginners and professionals

Answer 2

function hasOnlyDigits(str) {
    return str.match(/^[0-9]+$/) != null
}
  
  
console.log(hasOnlyDigits("node.js")); 
  
console.log(hasOnlyDigits("node.js 2024"));
  
console.log(hasOnlyDigits("9034882"));
  
 
      
      
/*
run:
      
false
false
true
      
*/

 

70+ SQL courses for beginners and professionals