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I have worked the same process in JavaScript with number datatype
var num = 9223372036854775807;
But when I try print this variable in browser
alert(num)
the value changed to 9223372036854776000
Any ideas?
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JavaScript, always stored the numbers in the form of floating-point or double-precision, and it stored the numbers in 64 bits. In JavaScript numbers are also known as the fractions which are stored in bits from 0 to 51, the sign is stored in 63 bits and the exponent is stored in bits 52 to 62 bits.
html. The Number. isInteger() method in JavaScript is used to check whether the value passed to it is an integer or not. It returns true if the passed value is an integer, otherwise, it returns false.
Number is a primitive wrapper object used to represent and manipulate numbers like 37 or -9.25 . The Number constructor contains constants and methods for working with numbers. Values of other types can be converted to numbers using the Number() function.
JavaScript has several special number values: Two error values, NaN and Infinity . Two values for zero, +0 and -0 . JavaScript has two zeros, a positive zero and a negative zero, because the sign and the magnitude of a number are stored separately.
Javascript numbers are actually double precision floats. The largest integer that can be precisely stored is 253, much less then your 263-1.
alert( Math.pow(2, 53) - 1 ) // 9007199254740991
alert( Math.pow(2, 53) ) // 9007199254740992
alert( Math.pow(2, 53) + 1 ) // 9007199254740992
Because the maximum integer value of a number in js is 9007199254740992. See What is JavaScript's highest integer value that a Number can go to without losing precision? for more
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