Else statement not executed javascript

Question

Hey Guys in the below code every time the if statement is executed no matter what the condition is.

function addRow(tableID) {

            var table = document.         


        

Answer 1

This is why I love yoda conditionals. You're assigning a value (=) rather than evaluating it ==.

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EDIT As suggested, I may point out that the order of checks in this particular statement is wrong. The check whether an element #select_degree exists should naturally occur before attempting to modify its properties.

However, given the element exists, the condition would still always evaluate true since the return value of the assignment (=) is used as an argument. As advocator for yoda conditionals, might I point out their advantage: for the following statement a syntax error would have been raised:

if ('hidden' = element.style.visibility)
{
// ...
}