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Javascript – how to fix undefined this keyword variable when calling from function

I would like to run this code but its giving me output of undefined in second console log instead of Oracle as I’m trying to call it from var retrieve name with reference to global var and this keyword.

this.name = "Oracle";
var website = {
name: "Java",
getName: function () {
return this.name;
   },
 };

console.log(website.getName()); // Java

var retrieveName = website.getName; //
console.log(retrieveName()); // Oracle but its printing undefined

var boundGetName = retrieveName.bind(website);
console.log(boundGetName()); // Java
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2

Answers


  1. Chosen as BEST ANSWER
    0

    [output received][1]

    I was running the code in Node.js that's why it seems to provide error on global var access. Now I made to run in Sloppy mode then ALL CLEARED..


  2. 0

    It is not the same, if you declare function, or value.

    var website = {
name: "Java",
getName: function () {
return this.name;
   },
 };

console.log(website.getName()); // Java

var retrieveName = website.getName(); //
console.log(retrieveName); // Java

website.name='Oracle';

var boundGetName = website.getName.bind(website);
console.log(boundGetName()); // Oracle

    Set this.name outside of an object is incorrect using of this.

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