Question

How to extract only numbers from a string in JavaScript

Answer 1

function extract_only_numbers(s) {
    var len = s.length; 
    var numbers = "";
           
    for (var i = 0; i < len; i++) { 
         ch = s[i]; 
         var regex = /^[0-9]+$/;
                 
         if (ch.match(regex)) {
            numbers = numbers + ch; 
         }
    } 
    return numbers; 
} 


var s = "c++14@vb.net&%JavaScript*() php <>/python 3.7.3"; 
 
document.write(extract_only_numbers(s));
      

 
 
  
/*
run:
   
14373
      
*/

 

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