我想要完成的任务：使用javascript中的原型创建模块，以便用户可以使用不同的选项多次实例化模块。 
 
 问题 ：使用var my_module3 = new module(); 然后尝试使用my_module3.init({ option: "value" });设置选项my_module3.init({ option: "value" }); 每次都不会更改对象，它只会更改一次。 
 
 测试：当使用console.log我们可以看到它打印出具有相同选项的两个对象，即使它们设置不同 
 
Object {first: "Barry", second: "Larry", third: "Sam"} 
Object {first: "Barry", second: "Larry", third: "Sam"} 
 
 这是我的jsFiddle完整代码： http ： //jsfiddle.net/11bLouc8/2/ 
 
        var module = (function () {
        // default options
        var options = {
            first: "test",
            second: "test2",
            third: "test3"
        };
        // take in useroptions and replace default options
        var module = function(userOptions) {
            if (userOptions != null && userOptions != undefined
                && userOptions != 'undefined') {
                for (var opt in options) {
                    if (userOptions.hasOwnProperty(opt)) {
                        options[ opt ] = userOptions[ opt ];
                    }
                }
            }
        };

        //prototype
        module.prototype = {
            init: module,
            options: options
        };

        return module;

    })();

    // create a new instance
    var my_module3 = new module();
    my_module3.init({
        first: "Mike",
        second: "Lisa",
        third: "Mary"
    });

    // another instance
    var my_module2 = new module();
    my_module2.init({
        first: "Barry",
        second: "Larry",
        third: "Sam"
    });

What I want to accomplish: Create modules using prototyping in javascript so that a user can instantiate a module multiple times each with different options.
 
The Problem: when using var my_module3 = new module(); and then trying to set the options with my_module3.init({ option: "value" }); does not change the object each time, it only changes it once.
 
Testing: When using console.log we can see that it prints out the two objects with the same options even though they are set differently
 
Object {first: "Barry", second: "Larry", third: "Sam"} 
Object {first: "Barry", second: "Larry", third: "Sam"} 
 
Here is my jsFiddle full code: http://jsfiddle.net/11bLouc8/2/
 
        var module = (function () {
        // default options
        var options = {
            first: "test",
            second: "test2",
            third: "test3"
        };
        // take in useroptions and replace default options
        var module = function(userOptions) {
            if (userOptions != null && userOptions != undefined
                && userOptions != 'undefined') {
                for (var opt in options) {
                    if (userOptions.hasOwnProperty(opt)) {
                        options[ opt ] = userOptions[ opt ];
                    }
                }
            }
        };

        //prototype
        module.prototype = {
            init: module,
            options: options
        };

        return module;

    })();

    // create a new instance
    var my_module3 = new module();
    my_module3.init({
        first: "Mike",
        second: "Lisa",
        third: "Mary"
    });

    // another instance
    var my_module2 = new module();
    my_module2.init({
        first: "Barry",
        second: "Larry",
        third: "Sam"
    });

原文：https://stackoverflow.com/questions/26427639