Does Javascript handle integer overflow and underflow? and if yes how ?

Question

i want to analyse some program written in javascrpt by TAjS tool . so i want to answer the following question :

Does Javascript handle integer overflow and underflow? If yes, how?

Answer 1

Javascript Number does have a maximum (defined by Number.MAX_VALUE).

From experimentation: The following code illustrates how Javascript (at least in Chrome console) handles overflow:

var i = Number.MAX_VALUE *2;
console.log(i);

>> Infinity

Underflow doesn't appear to "work" though:

var i = Number.MIN_VALUE - Number.MAX_VALUE;
console.log(i);

>> -1.7976931348623157e+308