Call anonymous function with 'this' from function

Question

How can I execute this anonymous function with the context of the function that's supplied from call?

function test(text) {
    this.first = 'test';
    console.log(this.first);
}


(function(val){
    return function(val) {
        console.log(this.first);
    }
}()).call(test)

Answer 1

I did not incluse var self = this; before entering the return function:

(function(val){
    var self = this;   //add this line
    return function(val) {
        console.log(self.first);
    }
}()).call(test)

Answer 2

我相信你会得到什么样的价值this将是该范围内test与test.prototype 。