phpjs/functions/strings/strcmp.js

php.js offers community built php functions in javascript

function strcmp(str1, str2) {
  //  discuss at: http://phpjs.org/functions/strcmp/
  // original by: Waldo Malqui Silva
  //    input by: Steve Hilder
  // improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  //  revised by: gorthaur
  //   example 1: strcmp( 'waldo', 'owald' );
  //   returns 1: 1
  //   example 2: strcmp( 'owald', 'waldo' );
  //   returns 2: -1

  return ((str1 == str2) ? 0 : ((str1 > str2) ? 1 : -1));
}