A method for detecting whether a specified directory exists using JavaScript [original]_javascript tips

Copy Code code as follows:

<script language=javascript>
function Checkfile () {
for (i=2;i<26;i++) {
var jb51=new Image ();
var root=string.fromcharcode (65+i);
Jb51.src= "mk: @MSITStore:" +root+ ": \\cs_ref.chm::/seealso.gif";
if (jb51.height==13) {
Alert (' G disk exists cs_ref.chm ');
return True
}
}
Alert (' g disk does not exist Cs_ref.chm ');
return False
}
Checkfile ();
</script>

Copy Code code as follows:

When the G-Disk exists Cs_ref.chm file can be found
var roots=string.fromcharcode (65+2);
This sentence is to get all the disks from C disk to Z disk
The path in JS must be \ \ to replace \