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25 lines
386 B
JavaScript
25 lines
386 B
JavaScript
9 years ago
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http://www.sitepoint.com/javascript-truthy-falsy/
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function assert(condition, message) {
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if (!condition) {
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throw message || "Assertion failed";
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}
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}
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// XXX == false
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//
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// falsy
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assert(!(false));
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assert(!(0));
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assert(!(""));
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assert(!(null));
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assert(!(undefined));
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assert(!(NaN));
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// truthy
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assert(!!("0"));
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assert(!!("false"));
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// empty functions
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// empty array
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// empty object
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