"This sort of thing happens in type conversion languages. You can either use === to stop conversion or you can understand how conversion works."
Even JavaScript isn't insane enough to somehow coerce a string to 0.
Even JavaScript isn't insane enough to somehow coerce a string to 0.
console.log(5*"12");
60
console.log(5*"0x0C");
60PHP doesn't have that concept in it.
I always understood that the 'isNaN()' function was required to check if a numeric variable is equal to 'NaN' directly, since normal equality cannot be used as there are multiple valid bitwise representations of 'NaN' in the standard - it is a float with an exponent of all ones and a non-zero fraction. However, 'isNaN()' now seems to have been co-opted into being used to check if a string is not a number, i.e. does not represent a numeric value, and in fact I believe this is now the documented description of the function in ECMAScript?
We use Java at the backend and of course Javascript for frontend. When serializing, in Java we should
String dataRaw = "42";
int objectId = Integer.parseInt(dataRaw);
dataRaw = "42";
var objectid = +dataRaw;