js implements continuous invocation of functions

Use js to implement continuous method calls like jquery

 $("div").width(100).height(500).html(123);

 

var obj = {};
        obj.func1 = function () {
            console.log('func1');
            return this;
        };
        obj.func2 = function () {
            console.log('func2');
            return this;
        };
obj.func1().func2();