Features
bind\apply\call will change the point of this when the function is called
the difference
- Execution method:
apply\call will execute the function immediately, bind is the function that returns the binding this point, - Parameter
bind\apply\call The first parameter is used for this to point to the changed object.
Apply and the remaining parameters use array wrap parameters. The
first parameter of bind and call is used for this to point to the changed object, and the remaining parameters are passed directly
Sample code
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>bind,call,apply的区别</title>
</head>
<body>
<script>
let obj = {
name:"obj中的name",
print(a,b,c){
console.log(this.name,a,b,c)
}
}
window.name = "window中的age";
obj.print.bind(this,'1','2','3')()
obj.print.apply(this,[1,2,3])
obj.print.call(this,'1','2','3')
</script>
</body>
</html>
Print result
