| <!DOCTYPE html> | 
 | <link rel="help" href="https://www.w3.org/TR/1999/REC-xpath-19991116/#function-substring"> | 
 | <script src="/resources/testharness.js"></script> | 
 | <script src="/resources/testharnessreport.js"></script> | 
 | <script src="helpers.js"></script> | 
 | <body> | 
 | <div id="context"></div> | 
 | <script> | 
 | test(() => { | 
 |  const context = document.querySelector('#context'); | 
 |  context.innerHTML = '<span>^^^bar$$$</span><span></span><br><br><br><br>'; | 
 |  assert_equals(evaluateString('substring((./span)[1], count(./br))', context), 'bar$$$'); | 
 | }, 'substring() arguments depending on the context node'); | 
 | </script> | 
 | </body> |