Javascript 命名空间中的全局变量
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Global variable in Javascript Namespace
提问by Anirban Ghosh
I m new with Javascript Namespace, I have 2 buttons Add& Remove, I have the following script below.
我是 Javascript 命名空间的新手，我有 2 个按钮Add& Remove，下面有以下脚本。
<script>
var nRow=1;
function Add() {
nRow++;
alert(nRow);
}
function Remove() {
nRow--;
alert(nRow);
}
</script>
What I'm trying to do to put this script in a namespace and call the functions onClickof the buttons. Please tell me how to put it in namespace and call the functions.
我试图将这个脚本放在一个命名空间中并调用onClick按钮的功能。请告诉我如何将其放入命名空间并调用函数。
回答by BenM
Technically, JavaScript doesn't support namespaces. You could place it inside an object as follows:
从技术上讲，JavaScript 不支持命名空间。你可以把它放在一个对象中，如下所示：
var Increment = {
nRow : 1,
Add : function() {
this.nRow++;
alert(this.nRow);
},
Remove : function() {
this.nRow--;
alert(this.nRow);
}
}
You can then access the functions via Increment.Add()and Increment.Remove().
然后，您可以通过Increment.Add()和访问这些功能Increment.Remove()。
回答by SReject
Javascript doesn't have namespaces or classes. It has objects and prototypes. With that said, this should be what I believe you are asking for:
Javascript 没有命名空间或类。它有对象和原型。话虽如此，这应该是我相信您要求的：
<script>
window.myNameSpace = {
nRow: 1,
add: function () {
this.nRow++;
alert(this.nRow);
},
remove: function() {
this.nRow++;
alert(this.nRow);
}
};
document.getElementById("MyAddButtonId").addEventListener("click", myNameSpace.add, false);
document.getElementById("MyRemoveButtonId").addEventListener("click", myNameSpace.remove, false);
</script>
