[Solved] Simple math in HTML enter three values and get result after last value entered


St1, Br1, and Wo1 are references to the textbooks. If you want to add the values inside those textboxes, you should do it like this:

function changeInput(){     
   var calc = parseInt(St1.value) + parseInt(Br1.value) + parseInt(Wo1.value);

   Le1.value = calc;
}

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solved Simple math in HTML enter three values and get result after last value entered