偵 測 JavaScript 版 本
<script language="JavaScript">
<!--
var version = 1;
//-->
</script>
<script language="JavaScript1.1">
<!--
var version = 1.1;
//-->
</script>
<script
language="JavaScript1.2">
<!--
var version = 1.2;
//-->
</script>
<script
language="JavaScript">
<!--
document.write('你正在使用的瀏覽器支援 JavaScript ' + version);
//-->
</script>
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