javascript - 从 javascript 对象中删除元素

Question

我需要保持一个对象的整体布局。我将它传递给一个方法并:

1. 我需要从对象中删除一些东西，然后做一些事情，
2. 一旦我回到我所在的主要功能
3. 我需要对象保持原状。

它现在的设置方式是将其从主对象以及底部方法中的对象中删除。代码参见 JSFiddle http://jsfiddle.net/rwux4rta/要从运行中获取结果，请查看控制台

请帮助!

$( document ).ready(function() {
    var pList = new Object();
    pList["test"] = "test"; //this is being deleted from BOTH instances of the Obj
    pList["test1"] = "test1";
    pList["test2"] = "test2";
    pList["test3"] = "test3";
    pList["test4"] = "test4";

    displayData(pList);

    console.log(pList);
});

function displayData(badData){
    badData.test.removeData();

    console.log(badData);
}

Answer 1

尝试

 $(document).ready(function() {
    var pList = new Object();
    pList["test"] = "test"; //this is being deleted from BOTH instances of the Obj
    pList["test1"] = "test1";
    pList["test2"] = "test2";
    pList["test3"] = "test3";
    pList["test4"] = "test4";
    // extend `pList` to `_pList` object
    var _pList = $.extend({}, pList);
    displayData(_pList);

    console.log(pList, "original");
});

function displayData(badData){
    delete badData.test;

    console.log(badData, "extended");
}

jsfiddle http://jsfiddle.net/guest271314/rwux4rta/6/