compression_test()

2499function compression_test() {2500	?>2501	<script>2502	var compressionNonce = <?php echo wp_json_encode( wp_create_nonce( 'update_can_compress_scripts' ), JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ); ?>;2503	var testCompression = {2504		get : function(test) {2505			var x;2506			if ( window.XMLHttpRequest ) {2507				x = new XMLHttpRequest();2508			} else {2509				try{x=new ActiveXObject('Msxml2.XMLHTTP');}catch(e){try{x=new ActiveXObject('Microsoft.XMLHTTP');}catch(e){};}2510			}2511 2512			if (x) {2513				x.onreadystatechange = function() {2514					var r, h;2515					if ( x.readyState == 4 ) {2516						r = x.responseText.substr(0, 18);2517						h = x.getResponseHeader('Content-Encoding');2518						testCompression.check(r, h, test);2519					}2520				};2521 2522				x.open('GET', ajaxurl + '?action=wp-compression-test&test='+test+'&_ajax_nonce='+compressionNonce+'&'+(new Date()).getTime(), true);2523				x.send('');2524			}2525		},2526 2527		check : function(r, h, test) {2528			if ( ! r && ! test )2529				this.get(1);2530 2531			if ( 1 == test ) {2532				if ( h && ( h.match(/deflate/i) || h.match(/gzip/i) ) )2533					this.get('no');2534				else2535					this.get(2);2536 2537				return;2538			}2539 2540			if ( 2 == test ) {2541				if ( '"wpCompressionTest' === r )2542					this.get('yes');2543				else2544					this.get('no');2545			}2546		}2547	};2548	testCompression.check();2549	</script>2550	<?php2551}