drop down items selected show related check box

good morning all,

 

i have 1 drop down menu multiple selections available.

upon user selecting 1 item, "show" check box - if selected of course.

i have reviewed java script solutions posted haven't found 1 works scenario.

 

this have been using "validation"

 

if(dropdown1.value="bike")

    this.getfield("check box1").display=display.visible;

else this.getfield("check box1").display=display.hidden

 

if there blank field in drop down selected, nothing shows. if any text selected, show check box1. want show given check boxes associated item selected in drop down.

 

any guidance welcomed , yes, have limited exposure java script.

 

thank - doug

the comparison operator of js "==", not "=".

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