Difference between function(){}.bind(this) and angular.bind(this, function() {})

Question

What is the difference between the following codes

function Ctrl($scope) {
    $scope.$watch(function() {
        return this.variable;
    }.bind(this), /*...*/);
}

and

function Ctrl($scope) {
    $scope.$watch(angular.bind(this, function() {
        return this.variable;
    }, /*...*/);
}

for me are the same but is there any advantage of using angular.bind?

Taylor Buchanan · Accepted Answer · 2015-01-18 15:25:13Z

3

The built-in Function.prototype.bind function does not exist in older browsers, such as IE 8. However, the same syntax can be achieved by using a polyfill. This is essentially what Angular is doing internally.

The angular.bind function does not use Function.prototype.bind, so it may be possible to use it in older browsers. Of course, this point is moot if you are using a version of Angular that does not actively support those older browsers.

answered Jan 18, 2015 at 15:25

Taylor Buchanan

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