Global object builtin properties
delete NaN : false
NaN : NaN
delete Infinity : false
Infinity : Infinity
delete undefined : false
undefined : undefined
NaN= "hello"; : hello
NaN : NaN
Infinity= "hello"; : hello
Infinity : Infinity
undefined= "hello"; : hello
undefined : undefined
Math Object builtin properties
Math.PI = overwrite : hello
Math.PI : 3.141592653589793
Math.E = overwrite : hello
Math.E : 2.718281828459045
Math.LN10 = overwrite : hello
Math.LN10 : 2.302585092994046
Math.LN2 = overwrite : hello
Math.LN2 : 0.6931471805599453
Math.LOG2E = overwrite : hello
Math.LOG2E : 1.4426950408889633
Math.LOG10E = overwrite : hello
Math.LOG10E : 0.4342944819032518
Math.SQRT1_2 = overwrite : hello
Math.SQRT1_2 : 0.7071067811865476
Math.SQRT2 = overwrite : hello
Math.SQRT2 : 1.4142135623730951
delete Math.PI : false
Math.PI : 3.141592653589793
delete Math.E : false
Math.E : 2.718281828459045
delete Math.LN10 : false
Math.LN10 : 2.302585092994046
delete Math.LN2 : false
Math.LN2 : 0.6931471805599453
delete Math.LOG2E : false
Math.LOG2E : 1.4426950408889633
delete Math.LOG10E : false
Math.LOG10E : 0.4342944819032518
delete Math.SQRT1_2 : false
Math.SQRT1_2 : 0.7071067811865476
delete Math.SQRT2 : false
Math.SQRT2 : 1.4142135623730951
Number Object builtin properties
Number.MAX_VALUE = overwrite : hello
Number.MAX_VALUE : 1.7976931348623157e+308
Number.MIN_VALUE = overwrite : hello
Number.MIN_VALUE : 5e-324
Number.NaN = overwrite : hello
Number.NaN : NaN
Number.NEGATIVE_INFINITY = overwrite : hello
Number.NEGATIVE_INFINITY : -Infinity
Number.POSITIVE_INFINITY = overwrite : hello
Number.POSITIVE_INFINITY : Infinity
delete Number.MAX_VALUE : false
Number.MAX_VALUE : 1.7976931348623157e+308
delete Number.MIN_VALUE : false
Number.MIN_VALUE : 5e-324
delete Number.NaN : false
Number.NaN : NaN
delete Number.NEGATIVE_INFINITY : false
Number.NEGATIVE_INFINITY : -Infinity
delete Number.POSITIVE_INFINITY : false
Number.POSITIVE_INFINITY : Infinity
delete Number.undefined : true
Number.undefined : undefined
delete Number.undefined : true
Number.undefined : undefined
delete Number.undefined : true
Number.undefined : undefined