Multiple Checkboxes - At Least One Checked Required

hello again.  last cry hope. 

 

i have 6 checkboxes.  need @ least 1 box checked option check all.  need required check @ least 1 out of group or form not submit.  understand need use different names each checkbox. 

 

i found post below after searching online cannot work. 

 

 

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because checkboxes not mutually exclusive, set set of differently named fields. have determine event validate whether 1 of boxes checked.

 

the easiest way test whether value of field not "off". whole set of five, combine tests logical or (||).

 

this this:

 

if (this.getfield("mybox1").value != "off" || this.getfield("mybox2").value != "off" …)

 

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thanks or online resources.  

 

still searching on if has guidance.

 

many thanks! 

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