随笔分类 - Javascript
摘要：Take away:Always check you ruturn the accumulatorAlways pass in the inital valuevar data = ["vote1", "vote2", "vote1", "vote2"];var reducer = function...
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posted @ 2015-12-01 01:31
Zhentiw
摘要：Sometimes we need to turn arrays into new values in ways that can't be done purely by passing an accumulator along with no knowledge about its context...
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posted @ 2015-11-30 20:30
Zhentiw
摘要：Learn how to use Object.assign() and the spread operator proposed for ES7 to avoid mutating objects./* * Open the console to see * that the tests have...
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posted @ 2015-11-30 03:31
Zhentiw
摘要：Learn how two common array functions - map() and filter() - are syntactic sugar for reduce operations. Learn how to use them, how to compose them, and...
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posted @ 2015-11-29 18:00
Zhentiw
摘要：For Redux, you cannot use mutable methods like push, splice. Need to use immutable methods such as concat, slice and ...spreadHtml: JS Bin push(...
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posted @ 2015-11-29 01:29
Zhentiw
摘要：Currying is a core concept of functional programming and a useful tool for any developer's toolbelt.Example 1:let f = a => b => c => a+b+c;let result ...
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posted @ 2015-11-29 00:50
Zhentiw
摘要：Array slice creates a shallow copy of an array. In this lesson we cover, in detail, exactly what a 'shallow' copy is and how it can trip people up. We...
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posted @ 2015-11-27 03:50
Zhentiw
摘要：Before you use the React Redux bindings, learn how to create a complete simple application with just React and Redux. JS Bin const counter = ...
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posted @ 2015-11-26 03:38
Zhentiw
摘要：Learn how to build a reasonable approximation of the Redux Store in 20 lines. No magic!const counter = (state = 0, action) => { switch (action.type) ...
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posted @ 2015-11-26 02:12
Zhentiw
摘要：console.clear();const counter = (state = 0, action) => { switch (action.type) { case 'INCREMENT': return state + 1; case 'DECREMENT': ...
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posted @ 2015-11-25 03:17
Zhentiw
摘要：Single immutable state tree: Should be just one single javascript object.Describing the changes by action: every change in the application state as ...
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posted @ 2015-11-25 03:03
Zhentiw
摘要：Recursion is a technique well suited to certain types of tasks. In this first lesson we’ll look at solving a problem that requires the flattening of a...
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posted @ 2015-11-24 02:49
Zhentiw
摘要：Best Pratices for Object.assign: http://www.cnblogs.com/Answer1215/p/5096746.html Object.assign() can extend the object by adding new props: let obj =
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posted @ 2015-11-12 03:13
Zhentiw
摘要：An introduction to the Web Audio API. In this lesson, we cover creating an audio context and an oscillator node that actually plays a sound in the bro...
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posted @ 2015-11-11 01:47
Zhentiw
摘要：To Currencyfunction toCurrency(price){ return price.toString().replace(/(\d)(?=(\d{3})+(?!\d))/g, "$1,");}Deletion from Array:function deleteValues(a...
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posted @ 2015-11-02 02:48
Zhentiw
摘要：Learn how to query an Immutable.Map() using get, getIn, has, includes, find, first and last. These are powerful operators that make finding data in an...
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posted @ 2015-10-18 19:42
Zhentiw
摘要：We will now look at five methods that modify an Immutable.Map().setupdatedeleteclearmerge//set()var map = Immutable.Map();var todo = { id: +new Date(...
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posted @ 2015-10-18 18:16
Zhentiw
摘要：Learn how to create an Immutable.Map() through plain Javascript object construction and also via array tuples.console.clear();// Can be an objectvar m...
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posted @ 2015-10-18 17:55
Zhentiw
摘要：Learn how Immutable.js data structures are different from native iterable Javascript data types and why they provide an excellent foundation on which ...
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posted @ 2015-10-15 02:36
Zhentiw
摘要：gulpfile.js .jshintrc
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posted @ 2015-10-12 01:36
Zhentiw
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