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May 31, 2018 17:30
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console.log(100 + 50); // 150 | |
console.log(100 - 50); // 50 | |
console.log('100' + 50); // "10050" | |
console.log('100' - 50); // 50 | |
console.log(null + 50); // 50 | |
console.log(null - 50); // -50 | |
console.log(void 0 + 50); // NaN | |
console.log(void 0 - 50); // NaN | |
console.log(true + 50); // 51 | |
console.log(true - 50); // -49 | |
console.log(false + 50); // 50 | |
console.log(false - 50); // -50 | |
console.log([] + 50); // "50" | |
console.log([] - 50); // -50 | |
console.log([100] + 50); // "10050" | |
console.log([100] - 50); // 50 | |
console.log({} + 50); // "[object Object]50" | |
console.log({} - 50); // NaN | |
console.log(new Date + 1000); // "Thu May 31 2018 18:27:51 GMT+0100 (WAT)1000" | |
console.log(new Date - 1000); // 1527787670595 |
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