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this.js complete. prototype.js 60% complete. #1
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,26 +1,54 @@ | ||
| /* The for principles of "this"; | ||
| * in your own words. explain the four principle for the "this" keyword below. | ||
| * | ||
| * 1. | ||
| * 2. | ||
| * 3. | ||
| * 4. | ||
| * 1. Window/Global Object binding - If not contained within an Object scope, 'this' has global scope. | ||
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| * 2. Implicit Binding - methods/functions called with dot notation will automatically inherit parent scope with 'this' prefixed. | ||
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| * 3. New bindning - wwhen used with a constructor function 'this' refers to the object it is being called on. | ||
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| * 4. Explicit binding - refers to the use of call and apply, 'this' is included as the first argument and denotes the Object the calling method invokes. | ||
| * | ||
| * write out a code example of each explanation above | ||
| */ | ||
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| // Principle 1 | ||
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| // code example for Window Binding | ||
| console.log(this); | ||
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| // Principle 2 | ||
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| // code example for Implicit Binding | ||
| const speak = { | ||
| phrase : 'Hi', | ||
| deny : function(){ | ||
| return this.phrase + ', ' + 'dont wanna talk rn.'; | ||
| } | ||
| } | ||
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| console.log(speak.deny()); | ||
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| // Principle 3 | ||
| function makeCereal(kind){ | ||
| this.Kind = kind; | ||
| this.eat = function(){ | ||
| console.log(`Im in a ${this.Kind} kind of mood. Think I'll have some captain crunch.`); | ||
| } | ||
| } | ||
| const honeyNut = new makeCereal('healthy'); | ||
| const captain = new makeCereal('fun'); | ||
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| captain.eat(); | ||
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| // code example for New Binding | ||
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| // Principle 4 | ||
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| // code example for Explicit Binding | ||
| function Test(arg1, arg2){ | ||
| arg1 = 0; | ||
| arg2 = 1; | ||
| return (arg2 + arg2) / (arg1 + (arg2 + 4)); | ||
| } | ||
| function Test2(){ | ||
| return Test.call(this, 2, 3); | ||
| } | ||
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| console.log(Test2()); |
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Great job on this prototype. All of the console logs pass and you seem to understand the material. Keep up the good work Robert.