"Web front end development Best Practices Series" JavaScript Chapter

First, develop good coding habits, improve maintainability

1. Avoid defining global variables and functions, and solving global variables. The simplest method of "pollution" is to encapsulate variables and methods on a variable object, making it a property of the object:

1 var  Mycurrentaction = {2     length:0 ,3     function() {}, 4     function () {}5 }

You can also include global variables in a local scope, and then complete the definition of these variables and the logic used by the variables in this scope:

1 (function() {2    var length = 0; 3    function init () {} 4    function action () {} 5 }) ();

The module interacts with the return statement (that is, encapsulating the code logic and exposing the interface that needs to be accessed):

1 var mycurrentaction = (function() {2      var length = 0; 3      function init () {} 4      function action () {} 5      return {6         init:init7  }8 }) ();

"Web front end development Best Practices Series" JavaScript Chapter