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@ -172,7 +172,7 @@ alert( null == 0 ); // (2) false
alert( null >= 0 ); // (3) *!*true*/!* alert( null >= 0 ); // (3) *!*true*/!*
``` ```
Mathematically, that's strange. The last result states that "`null` is greater than or equal to zero", so one of the comparisons above it must be correct, but they are both false. Mathematically, that's strange. The last result states that "`null` is greater than or equal to zero", so in one of the comparisons above it must be `true`, but they are both false.
The reason is that an equality check `==` and comparisons `> < >= <=` work differently. Comparisons convert `null` to a number, treating it as `0`. That's why (3) `null >= 0` is true and (1) `null > 0` is false. The reason is that an equality check `==` and comparisons `> < >= <=` work differently. Comparisons convert `null` to a number, treating it as `0`. That's why (3) `null >= 0` is true and (1) `null > 0` is false.