[Javascript] Basic Knowledge
VariablesJavascript data types; undefined, null, boolean, string, symbol, number, object
When JavaScript variables are declared, they have an initial
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[IoT] MQTT Basic
Concepts
Publish/Subscribe
Device 1 publishes a topic
Device 2 is subscribed to the same topic in which device 1 is publishing in
Device 2 receives t
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[Leetcode] Backtracking
IntroBacktracking is usually used when you have multiple solutions and you need all the solutions. if we want a best solution(optimal) that would be D
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[React] Http
Setup
Fake http data from https://jsonplaceholder.typicode.com/
Use Axios package npm install axios --save
Axios docs: https://github.com/axios/axios
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[React] Routing
IntroductionThe Router Package will
Parse URL /Path
Read Config
Render / Load appropriate JSX / Component
Setupnpm install --save react-router-dom
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[Leetcode] DFS & BFS
301. Remove Invalid Parentheses [hard]Leetcode: https://leetcode.com/problems/remove-invalid-parentheses/description/Video: https://www.youtube.com/wa
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[Leetcode] Divide and Conquer
Divide and ConquerBreak a problem into roughly equal sized subproblems, solve seperately, and combine results.
Video: https://www.youtube.com/watch?v=
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[React] Redux
Redux work flowInstall npm install --save redux
Redux is like a central store which stores entire application state.
Reducer:Is a function, accepts t
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[React] Components life cycle, state, and props
DebugHigher Order Components Wrap other components and throws errors when inner components has error.
1234567891011121314151617181920212223// ErrorBou
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[React] Styling
Dynamically Assign Styles123456789101112131415161718render() { let output = null; let buttonStyles = { color: 'white', backg
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