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July 21, 2016 07:43
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| const handler = { | |
| get: (target, name) => { | |
| if (name in target) return target[name]; | |
| if (typeof target.methodMissing === 'function') return target.methodMissing(name); | |
| } | |
| }; | |
| const obj = new Proxy({ | |
| methodMissing: (name) => { | |
| return () => `${name}は存在しませんよ！`; | |
| } | |
| }, handler); | |
| console.log(obj.foo()); |
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