将“ this”引用分配给javascript中的变量

Question

Is it possible to assign 'this' reference to a variable in javascript. What I want is:

var someVariable = this;
alert(someVariable);

But I'm getting alert saying 'undefined'.

Answer 1

Yes, it is possible to assign this to a variable. When you get undefined , then you probably use/alert the variable outside the scope where it was defined.

This will work:

var someVariable;
function someFunction () {
    someVariable = this;
}
new someFunction();
alert(someVariable);