lib/qunit/qunit.js
function() {
		if ( window.jQuery ) {
			jQuery( "#qunit-fixture" ).html( config.fixture );
		} else {
			var main = id( 'qunit-fixture' );
			if ( main ) {
				main.innerHTML = config.fixture;
			}
		}
	}
function() {
		if ( window.jQuery ) {
			jQuery( "#qunit-fixture" ).html( config.fixture );
		} else {
			var main = id( 'qunit-fixture' );
			if ( main ) {
				main.innerHTML = config.fixture;
			}
		}
	}
function ( ) { if ( window . jQuery ) { jQuery ( "#qunit-fixture" ) . html ( config . fixture ) ; } else { var main = id ( 'qunit-fixture' ) ; if ( main ) { main . innerHTML = config . fixture ; } } }
Resets the test setup. Useful for tests that modify the DOM.

If jQuery is available, uses jQuery's html(), otherwise just innerHTML.
Resets the test setup . Useful for tests that modify the DOM .