Download Pro JavaScript with MooTools: Learning Advanced JavaScript by Mark Joseph Obcena (auth.) PDF

By Mark Joseph Obcena (auth.)

Pro JavaScript with MooTools is not like the other JavaScript publication out there this day. whereas related books concentrate on both JavaScript as a language of the browser or tips to use JavaScript frameworks, Pro JavaScript with MooTools fills the distance among those themes and strikes beyond—exploring the complex positive aspects of JavaScript and the way the MooTools framework makes use of those positive aspects to additional increase the language itself.

The booklet itself takes a different three-pronged method. It first walks you thru the complex positive factors of JavaScript and the MooTools framework, together with local augmentation and kind construction, a entire dialogue of JavaScript capabilities, object-oriented programming with local JavaScript and MooTools periods, and the MooTools type internals. you are going to then study all approximately Javascript within the DOM: the weather sessions and its internals, the MooTools occasion procedure, Selector engines and MooTools Slick, Ajax and the Request item, and animation and the Fx classes.

The ultimate part particularly units the publication except all others, because it discusses JavaScript open air the browsers. you will take an in-depth examine CommonJS and MooTools, utilizing MooTools outdoors the browser to construct ORM, growing basic CommonJS purposes through the MooTools Deck framework, and growing complicated server-side functions utilizing Raccoon.

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We can then use this variable to invoke our function, as illustrated on the last line where we use the function to add two numbers. You’ll notice that the length property of the function is the same as its function declaration counterpart, but the name property is different. In some JavaScript interpreters, its value will be a blank string (''), while in others it’ll be 'anonymous'. This happens because we didn’t specify an identifier for the function literal. In JavaScript, a function without an explicit identifier is called an anonymous function.

What if we have other parts in our code where we can use this? If we were to do as we did above, we’d have to create a new function for each of the partially applied functions we want. This is where first-class functions come in handy. Instead of explicitly declaring our new add5 function, we can have another function that takes a function as its argument and then returns a modified copy of that function. In our case, we can create a function that modifies our add function dynamically to create a new partially applied function: function add(a, b){ return a + b; }; function curryAdd(a){ return function(b){ return add(a, b); }; }; var add5 = curryAdd(5); add5(2); add5(5); add5(200); In this snippet we introduce a new function called curryAdd.

In our case, we can create a function that modifies our add function dynamically to create a new partially applied function: function add(a, b){ return a + b; }; function curryAdd(a){ return function(b){ return add(a, b); }; }; var add5 = curryAdd(5); add5(2); add5(5); add5(200); In this snippet we introduce a new function called curryAdd. It takes a single argument, a, which will be the value passed as the a argument to the original add function. It then returns a new function that has one formal parameter, b, which will be used as the b argument to add.

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