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Checkbox validation - at least one selected

 
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Hi, I have number of checkboxes and another checkbox for "Select All"

I want to check if the user has selected at least one checkbox. Need modification in javascript

 
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Before getting to the JavaScript, you need to design the HTML. What are your checkboxes called? How do you identify each one? A number, a different name, an array? Show some more of the HTML.
 
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And be sure to use proper formatting and indentation in your code. Unformatted code s surprisingly hard to read.
 
M sallu
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Done

 
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