in javascript why use " var that = this "
- by tarek11011
hi i am new with javascript
What is the benefit of using this line
var that = this
An example
function Person( firstname, lastname, age ) {
this.firstname = firstname;
this.lastname = lastname;
this.age = age;
getfullname = function() {
return firstname + “ “ + lastname;
};
var that = this;
this.sayHi = function() {
document.write( “Hi my name is “ + getfullname() + “ and I am “ + that.age + “years old.”);
};
}
thanks
