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목록String (2)
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object //? Object.assign() // Copies properties from one or more objects to a target object and returns the target object. const target = { a: 1, b: 2 }; const source1 = { b: 3, c: 4 }; const source2 = { c: 5, d: 6 }; const result = Object.assign(target, source1, source2); const result1 = { ...target, ...source1, ...source2, }; console.log(target); // { a: 1, b: 3, c: 5, d: 6 } console.log(resul..
const string1 = 'Hello'; const string2 = 'Hello'; const string3 = `Hello ${string1}`; console.log(string3); // Hello Hello const number = -123; console.log(number + 1); // -122 console.log(number + undefined); // NAN console.log(typeof (number + 1)); // -122 console.log(typeof (number + undefined)); // number const a = 0.1; const b = 0.2; console.log(a + b); // 0.30000000000000004 // Floating Po..