“{}”:间的差异和“new Object”
it1352
帮助1人
问题说明
可能重复：
创建对象 - 新对象或对象文字符号？
以下内容之间究竟有什么区别：
What exactly is the difference between the following:
var myData = new Object();
myData["name"] = "ATOzTOA";
myData["site"] = "atoztoa";
和
var myData = {};
myData["name"] = "ATOzTOA";
myData["site"] = "atoztoa";
更新
我得到的是这个......
What I got is this...
var myData = {
"name" : "ATOzTOA",
"site" : "atoztoa",
};
是
var myData = new Object({
"name" : "ATOzTOA",
"site" : "atoztoa",
});
我是对的吗？
正确答案
#1
没有区别（技术上）。 {} 只是新对象（）的快捷方式。
There is no difference (technically). {} is just a shortcut for new Object().
但是，如果指定对象文字，则可以直接形成具有多个属性的新对象。
However, if you assign an object literal, you may directly form a new object with multiple properties.
var myData = {
name: 'ATOzTOA',
size: 'atoztoa'
};
..这可能会更方便。此外，它减少了对象的访问，并最终更快。但这是关于微观优化的。更重要的是打字要少得多。
..which might feel more convenient. Also, it reduces the access on the object and is ultimately faster. But that is about microoptimizations. More important is that its a lot less to type.
这篇好文章是转载于：学新通技术网
