Why is 1.01m true in js
is that = first compare the type , and then compare the value .
because there are no integers and floating point numbers in js, there are only number types.
typeof 1.0; // "number"
typeof 1; // "number" so the types of 1.0 and 1 are the same.
then compare the value , which is obviously the same.
< hr >the complicated explanation is to look at the specification:
Type (x) is inconsistent with that of Type (y) , return false , otherwise
Type (x) result is Undefined , return true
Type (x) result is Null , return true
if Type (x) result is Number , then
x is NaN , return false
y is NaN , return false
x and y are the same number, return true x is + 0 , y is -0 , return true
x is -0 , y is + 0 , return true
false
Type (x) result is String , if x and y are exactly the same character sequence (same length and same character corresponding to the same position), return true , otherwise, return false
Type (x) result is Boolean , if x and y are both true or false , then return true , otherwise, return false
x and y refer to the same Object object, return true , otherwise, return false
I bolstered the important paragraphs.
WithinJavaScript, all numbers are stored as 64-bit floating-point numbers, even if integers
because js does not have float , int , only number
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