Question

How to extract lowercase characters from a string in JavaScript

Answer 1

function extract_lowercase(s) { 
    var len = s.length;
    var lower_s = ""; 
          
    for (var i = 0; i < len; i++) { 
         if (s[i] >= 'a' && s[i] <= 'z') 
             lower_s += s[i]; 
    } 
    return lower_s; 
} 
     
 
var s = "JAjaVvAaSscCRripItPT"; // JAVASCRIPTjavascript

var lc = extract_lowercase(s)
       
document.write(lc);
 
 
 
/*
run:
  
javascript 
  
*/

 

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