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print(parseInt("123Hello"));
print(parseInt("Hello123"));
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a = [1, 2, 3, 4, 5]; print(a.slice(2, 4));
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let sum = 0;
const a = [1, 2, 3];
a.forEach(getSum);
print(sum);
function getSum(ele) {
sum += ele;
}
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print(typeof(NaN));
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print(NaN === NaN);
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var a = true + true + true * 3; print(a)
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