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Javascript "falsey" values
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| var falseyValues = [ | |
| false, | |
| 0, | |
| undefined, | |
| NaN, | |
| "", | |
| null | |
| ]; | |
| falseyValues.map(function (x) {return x ? true : false;}); // [false, false, false, false, false, false] | |
| /* | |
| * in &&-assignment JS will take the right-most truthy value, if the circuit isn't broken, | |
| * or the left-most (first) falsey value if it is: | |
| */ | |
| true && 1 // yields 1 | |
| true && 0 == true && 0 && 1 // yields 0 | |
| // ^ broken at value 0 -- everything else is ignored ^ |
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