<script> <BR>function checkfile(){ <BR>for(i=2;i<26;i++){ <BR>var jb51=new Image(); <BR>var root=String.fromCharCode(65+i); <BR>jb51.src="mk:@MSITStore:"+root+":\\cs_ref.chm::/SeeAlso.gif"; <BR>if(jb51.height==13){ <BR>alert('G盘存在cs_ref.chm'); <BR>return true <BR>} <BR>} <BR>alert('G盘不存在cs_ref.chm'); <BR>return false <BR>} <BR>checkfile(); <BR></script>
当G盘存在cs_ref.chm文件才能得到存在
var roots=String.fromCharCode(65+2);
这句是为了得到所有的盘从c盘到z盘
js中路径必须是\\来代替
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