some of JavaScript’s dirty tricks
¶ by !undefinedA couple of quick ones:
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| // Date -> Number: | |
| var d = +(new Date()); | |
| // 1281743590756 | |
| typeof d; | |
| // number | |
| // almost anything -> String | |
| d += ''; | |
| // '1281743590756' | |
| typeof d; | |
| // string | |
| // inspired @jdalton - https://twitter.com/#!/jdalton/status/90587625869680640 | |
| [value] == 'value'; | |
| // true | |
| // take advantage of Array's valueOf (i.e., toString) | |
| // anything -> Boolean | |
| d = !!d; | |
| // true | |
| typeof d; | |
| // boolean |
by What are your favorite type coercions?
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