javascript简单的阻塞说明

这段代码后面的引用JS会阻塞前面行内JS代码

<?php

$type = @$_GET['type'];
if ( $type == 1 ){
	sleep(10);
	echo "alert(1);";
	exit;
}
echo time();
?>
<script type="text/javascript" src="/jquery/jquery.js"></script>
<script>
$(function(){
	alert(22);
})
</script>

<script type="text/javascript" src="http://test.xtgxiso.cn/test.php?type=1"></script>

简单修改成这样就不会了

<?php

$type = @$_GET['type'];
if ( $type == 1 ){
	sleep(10);
	echo "alert(1);";
	exit;
}
echo time();
?>
<script type="text/javascript" src="/jquery/jquery.js"></script>
<script>
$(function(){
	alert(22);
})
</script>

<script type="text/javascript">
    $(function(){
    var _bdhmProtocol = (("https:" == document.location.protocol) ? " https://" : " http://");
    document.write(unescape("%3Cscript src='" + _bdhmProtocol + "test.xtgxiso.cn/test.php?type=1' type='text/javascript'%3E%3C/script%3E"));
    })
</script> 

先简单说明一下，有时间再仔细分享.

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