describe("create a simple directive", function () {
var simpleModule = angular.module("directivesSample", []);
simpleModule.controller('Ctrl2', function ($scope) {
$scope.format = 'M/d/yy h:mm:ss a';
});
simpleModule.directive("myCurrentTime", function ($timeout, dateFilter) {
return function (scope, element, attr) {
var format;
var timeoutId;
function updateTime() {
element.text(dateFilter(new Date(), format));
}
scope.$watch(attr.myCurrentTime, function (value) {
format = value;
updateTime();
});
function updateLater() {
timeoutId = $timeout(function () {
updateTime();
updateLater();
}, 1000);
}
element.bind('$destroy', function () {
$timeout.cancel(timeoutId);
});
updateLater();
}
});
beforeEach(module('directivesSample'));
var element = angular.element(
'<div ng-controller="Ctrl2">Date format:<input ng-model="format"> ' +
'<hr/>Current time is: ' +
'<span class="timeout" my-current-time="format" id="timeout-render"></span>' +
'</div>');
var directiveScope;
var scope;
var linkedElement;
var linkFunction;
beforeEach(inject(function ($rootScope, $compile) {
scope = $rootScope.$new();
linkFunction = $compile(element);
linkedElement = linkFunction(scope);
scope.$apply();
}));
it("should define element time out", function () {
var angularElement = element.find('span'); // <-- element is not returned if set to var angularElement = element.find('.timeout'); or var angularElement = element.find('#timeout-render');
console.log(angularElement.text());
expect(angularElement.text()).not.toBe('');
})
});
进行上述测试后,为什么我无法通过JQuery选择器搜索元素?我知道find()方法文档中的limitations。但是,我已经检查了angularUI项目检查了find()函数的用法,如here
var tt = angular.element(elm.find("li > span")[0]);
并且发现这些人正在使用find来搜索jQuery选民的元素,而不仅仅是标签名称而我无法这样做。我错过了什么吗?
答案 0 :(得分:5)
这是因为Angular内置的jqLite对CSS选择器的支持有限。但是如果在包含Angular之前在脚本标记中包含jQuery,Angular将会看到并使用jQuery代替其jqLite来调用angular.element()。