priority,terminal

 .directive('customTags2',function () {
        return{
            restrict:'ECMA',
            template:'<div>2</div>',
            replace:true,
            priority:-1
        }
    })
    .directive('customTags3',function () {
        return{
            restrict:'ECMA',
            template:'<div>3</div>',
            replace:true,
            priority:0,
            //小于0的directive都不会执行
            terminal:true
        }
    })