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How to: Operator precedence with Javascript Ternary operator

How to: Operator precedence with Javascript Ternary operator

Operator precedence with Javascript Ternary operator

I cant seem to wrap my head around the first part of this code ( += ) in combination with the ternary operator.

h.className += h.className ? ' error' : 'error'

The way i think this code works is as following:

h.className = h.className + h.className ? ' error' : 'error'

But that isn’t correct because that gives a error in my console.

So my…

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