Simple analysis of JavaScript object-oriented and prototype_jquery
The main content of this article comes from JavaScript advanced programming, object-oriented and prototype chapters:
1. Factory mode
ECMAScript can create objects through the factory pattern:
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Objects created through the factory pattern solve the problem of repeated instantiation, but the object recognition problem cannot be solved (all objects are Objects), so to solve the object recognition problem, we use the following constructor.
2. Constructor
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This in the constructor: represents the reference to the current scope object. If it is in the global scope, this represents the window object. If it is in the constructor body, it represents the object declared by the current constructor.
The constructor method solves the problem of repeated instantiation and object identification. Comparing the differences with the factory method, we can see:
1. The constructor method does not create an object (new Object()) explicitly;
2. Directly assign attribute and method values to this;
3. No return statement;
4. However, when creating using a constructor, you must use the new operator;
The above is the entire content of this article, I hope you all like it.

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