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March 4, 2020 12:06
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Markdium-用 Substrate Front-end Template 輕鬆打造你的 React 應用
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| let unsubscribe; | |
| api.query.templateModule.something(function(val) { | |
| // 回調函數 | |
| // 在這裡設置 UI 里使用的變量。 | |
| }).then(unsub => { | |
| //取消訂閱函數 | |
| unsubscribe = unsub; | |
| }) |
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