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<script type="text/javscrpt">//<![CDATA[
alert(tmp); //输出 undefined
var tmp = 1;
alert(tmp); //输出 1
//]]></script>
<script type="text/javscrpt">//<![CDATA[
aa(); //浏览器报错
//]]></script>
<script type="text/javscrpt">//<![CDATA[
aa(); //输出 1
function aa(){alert(1);}
//]]></script>
<script type="text/javascript">//<![CDATA[
document.write('<script type="text/javascript" src="test.js"><\\/script>');
document.write('<script type="text/javascript">');
document.write('alert(2);')
document.write('alert("我是" + tmpStr);');
document.write('<\\/script>');
//]]></script>
<script type="text/javascript">//<![CDATA[
alert(3);
//]]></script>
<script type="text/javascript">//<![CDATA[
document.write('<script type="text/javascript" src="test.js"><\\/script>');
//]]></script>
<script type="text/javascript">//<![CDATA[
document.write('<script type="text/javascript">');
document.write('alert(2);')
document.write('alert("我是" + tmpStr);');
document.write('<\\/script>');
//]]></script>
<script type="text/javascript">//<![CDATA[
alert(3);
//]]></script>
<script type="text/javascript">//<![CDATA[
window.onload = f;
function f(){alert(1);}
alert(2);
//]]></script>
window.onload = function(){f();f1();f2();.....}
if(document.addEventListener){
window.addEventListener('load',f,false);
window.addEventListener('load',f1,false);
...
}else{
window.attachEvent('onload',f);
window.attachEvent('onload',f1);
...
}
<script type="text/javascript">//<![CDATA[
document.write('<script type="text/javascript" src="test.js"><\\/script>');
document.write('<script type="text/javascript" defer="defer">');
document.write('alert(2);')
document.write('alert("我是" + tmpStr);');
document.write('<\\/script>');
//]]></script>
<script type="text/javascript">//<![CDATA[
alert(3);
//]]></script>