Question

How to get the start position of the first matched number in a string using regex in JavaScript

Answer 1

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

document.write(s.search(/[0-9]+/)); 
 
 
  
/*
run:
   
10
      
*/

 

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Answer 2

var s = "javascript";

document.write(s.search(/[0-9]+/)); // not matched = -1
 
 
  
/*
run:
   
-1
      
*/

 

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