Bind in JavaScript
bind() returns a bound function that, when executed later, will have the correct context ("this") for calling the original function.
Confused Curlew
bind() returns a bound function that, when executed later, will have the correct context ("this") for calling the original function.var myButton = {
content: 'OK',
click() {
console.log(this.content + ' clicked');
}
};
myButton.click();
var looseClick = myButton.click;
looseClick(); // not bound, 'this' is not myButton - it is the globalThis
var boundClick = myButton.click.bind(myButton);
boundClick(); // bound, 'this' is myButtonar bikeDetails = {
displayDetails: function(registrationNumber,brandName){
return this.name+ " , "+ "bike details: "+ registrationNumber + " , " + brandName;
}
}
var person1 = {name: "Vivek"};
var detailsOfPerson1 = bikeDetails.displayDetails.bind(person1, "TS0122", "Bullet");
// Binds the displayDetails function to the person1 object
detailsOfPerson1();
// Returns Vivek, bike details: TS0452, Thunderbirdar bikeDetails = {
displayDetails: function(registrationNumber,brandName){
return this.name+ " , "+ "bike details: "+ registrationNumber + " , " + brandName;
}
}
var person1 = {name: "Vivek"};
var detailsOfPerson1 = bikeDetails.displayDetails.bind(person1, "TS0122", "Bullet");
// Binds the displayDetails function to the person1 object
detailsOfPerson1();
// Returns Vivek, bike details: TS0452, Thunderbird