Question

How to check whether a string contains numbers using regex in JavaScript

Answer 1

var s = "javascript01223c++3php500--9_8";

document.write(/[0-9]+/.test(s)); 
 
 
  
/*
run:
   
true  
      
*/

 

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Answer 2

var s = "javascript01223c++3php500--9_8";

document.write(/\d/.test(s)); 
 
 
  
/*
run:
   
true  
      
*/

 

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Answer 3

function string_has_number(s) {
  return /\d/.test(s);
}

var s = "javascript01223c++3php500--9_8";

if (string_has_number(s))
    document.write("yes"); 
 
 
  
/*
run:
   
yes 
      
*/

 

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