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Apabila menggunakan fungsi _C pada fungsi ahli kelas tersuai, yang betul ini tidak diperolehi
Created 2019-08-11 14:47:22 Updated 2019-08-11 14:50:47
3
1841
Cuba jalankan kod berikut:
function MyClass()
{
this.m_name = "my name";
}
MyClass.prototype.printMyName = function()
{
Log(this.m_name);
return true;
}
function main() {
var myobj = new MyClass();
myobj.printMyName();
_C(myobj.printMyName);
}
Hasil cetakannya ialah:
- my name
- null
Iaitu,_C ((myobj.printMyName) dipanggil, this dalam fungsi ini tidak merujuk kepada objek myobj
Bagaimana untuk menyelesaikan masalah ini?
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Comment
All comments (3)
function MyClass() {
var self = {}
self.m_name = "My Name"
self.printMyName = function () {
Log(self.m_name)
return true
}
return self
}
function main() {
var myobj = MyClass()
myobj.printMyName()
_C(myobj.printMyName)
}
7 years ago
- 1