If there is a numerical operation then the string is converted into a number. The + is a string concatenation operator and a numerical operator, string wins in this case. So "1" concatenate the result of 1*2 = 2 becomes "12" as a string.
Note that + on its own is always a numerical operator which is why you might see this:
functionadd(a,b){return+a++b}
The +a is bound to convert a to be a number (if possible) etc.
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If there is a numerical operation then the string is converted into a number. The + is a string concatenation operator and a numerical operator, string wins in this case. So "1" concatenate the result of 1*2 = 2 becomes "12" as a string.
Note that
+on its own is always a numerical operator which is why you might see this:The
+ais bound to convertato be a number (if possible) etc.