Write a JS function to tell me whether or not a string is a valid tag. A valid tag may or may not begin with a "#", and all the succeeding characters must be one of: ["P", "Y", "L", "Q", "G", "R", "J", "C", "U", "V", "0", "2", "8", "9"]
system
mujhe yah bataane ke liye ek JS fnction likhen ki ek string ek vaid tag he yaa nahin.ek vaid tag "#" ke saath shuru ho saktaa he yaa nahin, or sabhi safal paatro main se ek hona chahie: ["pi", "vaai", "el", "kyuu", "ji", "aar", ","J "," c "," u "," v "," 0 "," 2 "," 8 "," 9 "]
user
yahaan ek javascript fnction he jo ek bulian lautaata he jo yah darshata he ki string ek vaid tag he yaa nahin.

niryaat fnction isvalidtag (tag: string): bulian {
        vaapasi tag
                .sabko badali karen("#", "")
                .vibhajit karnaa("")
                .0 "," 2 "," 8 "," 9 "]. shaamil (chaar));
}
assistant
<|system|>
</s>
<|user|>
mujhe yah bataane ke liye ek JS fnction likhen ki ek string ek vaid tag he yaa nahin.ek vaid tag "#" ke saath shuru ho saktaa he yaa nahin, or sabhi safal paatro main se ek hona chahie: ["pi", "vaai", "el", "kyuu", "ji", "aar", ","J "," c "," u "," v "," 0 "," 2 "," 8 "," 9 "]</s>
<|assistant|>
yahaan ek javascript fnction he jo ek bulian lautaata he jo yah darshata he ki string ek vaid tag he yaa nahin.

niryaat fnction isvalidtag (tag: string): bulian {
        vaapasi tag
                .sabko badali karen("#", "")
                .vibhajit karnaa("")
                .0 "," 2 "," 8 "," 9 "]. shaamil (chaar));
}</s>
