For the following reasons:
1, two-way binding core principles vue framework is to use Object.defineProperty () method to achieve.
2, the first method is implemented in IE8, but there are many restrictions: You can only use this method on a DOM object, and only create access properties (data attributes can not be accessed).
3, IE9 no restrictions, full support for IE9
For the following reasons:
1, two-way binding core principles vue framework is to use Object.defineProperty () method to achieve.
2, the first method is implemented in IE8, but there are many restrictions: You can only use this method on a DOM object, and only create access properties (data attributes can not be accessed).
3, IE9 no restrictions, full support for IE9