我从自定义指令中获得了一些奇怪的行为。如果我直接传入一个值似乎工作,但如果我传入绑定值,它不起作用。此外,我在console.log中的值似乎是正确的,但它不会返回true。
//directive
angular.module('tallllyApp')
.directive('userColor', ['simpleLogin', '$timeout', function (simpleLogin, $timeout) {
'use strict';
return {
restrict: 'AE',
scope: {
color: '@'
},
link: function(scope, el, attrs) {
el.css('background', '#5DC472');
console.log(attrs); //attrs.color shows 'Andrey'
console.log(attrs.color); //displays nothing
console.log(attrs.color === 'Andrey'); //false
}
};
}]);
//html = {{profile.name}} does output 'Andrey'
<section class="col user-tasks" user-color color="{{profile.name}}">
答案 0 :(得分:1)
很可能您的问题可能是异步分配profile.name
,当您运行该指令时,数据可能还没有回来。因此,您可以应用的一种技术是等待直到通过在范围属性(attrs.$observe
)上的属性(scope.$watch
)上注册监视来获取数据,并在获得值后清理监视
实施例: -
link: function(scope, el, attrs) {
el.css('background', '#5DC472');
//attrs.$observe('color', function(v){
var unWatch = scope.$watch('color', function(v){ //Set up a watch
if(v){ //Check if you got the value yet if so
unWatch(); //clear the watch
init(); //initialize directive
}
});
function init(){
console.log(attrs);
console.log(scope.color); //attrs.color
console.log(scope.color === 'Andrey');
}
}
<强> Plnkr 强>
答案 1 :(得分:0)
您是否尝试过以不同方式绑定范围? (虽然对我来说它既有双向作用)
//directive
angular.module('tallllyApp')
.directive('userColor', ['simpleLogin', '$timeout', function (simpleLogin, $timeout) {
'use strict';
return {
restrict: 'AE',
scope: {
color: '='
},
link: function(scope, el, attrs) {
el.css('background', '#5DC472');
console.log(scope.color); //should display 'Andrey'
}
};
}]);
//html = {{profile.name}} does output 'Andrey'
<section class="col user-tasks" user-color color="profile.name">