本文介绍了使用此 Javascript的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
限时送ChatGPT账号..JS 新手.. 谁能告诉我在下面的函数中使用 this 是否合适:
New to JS.. can anyone tell me if the use of this is appropriate in the below function:
var Vector = (function()...
this.prototype.add = function(someVector2){
var tmpVect = this;
tmpVector.x += someVector2.x;
tmpVector.y += someVector2.y;
return tmpVect;
};
从某种意义上说,'var tmpVect = this' 将产生一个带有 x & 的局部 Vector 变量.调用函数的向量的 y 属性?
In the sense that 'var tmpVect = this' will result in a local Vector variable with the x & y attributes of the vector that called the function?
干杯
推荐答案
我会这样重写:(基于你的评论)
I would rewrite this like so:(based on your comments)
var Vector = function(){
}
Vector.prototype.add = function(someVector2){
var tmpVector = new Vector;
tmpVector.x = this.x + someVector2.x;
tmpVector.y = this.y + someVector2.y;
return tmpVector;
}
然后你可以像这样调用它:
Then you could invoke it like so:
var someVector = new Vector();
var addedVector = someVector.add(someVector);
上面将在 addedVector
中存储一个新的 Vector,它的 x
和 y
值是 someVector的两倍代码>.
The above would store a new Vector in addedVector
that would have an x
and y
value double that of someVector
.
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