I'm still learning JS, how to place inner text to a same multiple td at once using JavaScript ? I'm trying to place "working Time" to multiple td element that have same id name which is "cellWork" but in my input it doesn't show :S why ?

I'm still learning JS, how to place inner text to a same multiple td at once using JavaScript ? I'm trying to place "working Time" to multiple td element that have same id name which is "cellWork" but in my input it doesn't show :S why ?
