从href调用angularjs范围函数
[英]Calling angularjs scope function from href
问题描述
I am using a library which appends a href element onto an tag. 
我正在使用一个库，它将href元素附加到标记上。 On this link I need to make a call to an angularjs function that is within scope. 在这个链接上，我需要调用范围内的angularjs函数。 Something like... 就像是...
<a href="{{someFunction()}}"></a>
Note: I am attaching this href via javascript from another library (nvd3.js) not actually writing this in because if I was I could easily use ng-click or ng-href. 注意：我通过javascript从另一个库（nvd3.js）附加此href，实际上没有写入，因为如果我是，我可以轻松地使用ng-click或ng-href。
7 个解决方案
解决方案1
19 2014-07-01 13:26:39
So I was not pleased with the answer to this as it doesn't really utilize an elegant angular solution. 所以我对这个答案并不满意，因为它并没有真正使用优雅的角度解决方案。
Here's my solution: http://jsfiddle.net/jjosef/XwZ93 这是我的解决方案： http ： //jsfiddle.net/jjosef/XwZ93
HTML: HTML：
<body class="wrapper" ng-app="ExampleApp">
<a my-href="buildUrl('one', aVariable, 'three')">This is my a tag with a function that builds the url</a>
</body>
JS: JS：
angular.module('ExampleApp', []);
angular.module('ExampleApp').run(function($rootScope) {
$rootScope.buildUrl = function() {
var link = [];
for(var i = 0; i < arguments.length; i++) {
link.push(arguments[i].toLowerCase());
}
return '/#!/' + link.join('/');
};
$rootScope.aVariable = 'two';
});
angular.module('ExampleApp').directive('myHref', function($parse) {
return {
restrict: 'A',
link: function(scope, element, attrs) {
var url = $parse(attrs.myHref)(scope);
element.attr('href', url);
}
}
});
解决方案2
14 已采纳 2014-01-08 17:51:13
That's a bit convoluted. 这有点令人费解。
CAVEAT : This is very, very hacky and just absolutely exactly what you're NOT supposed to do in angular, but I guess you know that and the library is making your life hard... CAVEAT ：这非常，非常hacky，绝对正是你不应该做的角度，但我猜你知道这个和图书馆让你的生活变得艰难......
First, unlike onclick , an href won't interpret a string as javascript. 首先，与onclick不同， href不会将字符串解释为javascript。 Instead, you'd have to use 相反，你必须使用
<a href="javascript:someFunction()"></a>
But this alone won't make it work, because someFunction() is not a method on the document , but on the controller, so we need to get the controller first: 但是这一点不会使它工作，因为someFunction()不是document上的方法，而是在控制器上，所以我们需要先得到控制器：
<a href="javascript:angular.element(
document.getElementById('myController')).scope().someFunction();"></a>
Where myController refers to the DOM element that is decorated with ng-controller , eg myController引用用ng-controller修饰的DOM元素，例如
<div data-ng-controller="SomeController" id="myController"> ... </div>
If someFunction modifies the state of the view, you'll also need to use $scope.apply , ie 如果someFunction修改了视图的状态，你还需要使用$scope.apply ，即
<a href="javascript:angular.element(document.getElementById('myController')).
scope().$apply(someFunction)"></a>
Note that you don't need the {{ }} syntax, because you're calling javascript directly, you're not asking angular to modify your markup. 请注意，您不需要{{ }}语法，因为您直接调用javascript，而不是要求angular修改标记。
解决方案3
8 2014-06-09 18:32:23
您应该使用ng-click这里。
解决方案4
2 2015-10-06 22:07:00
The simplest solution is 最简单的解决方案是
<a href="" ng-click="someFunction(x,y,z)">Go</a>
href="" is important, otherwise hover cursor style does not change to a pointer href =“”很重要，否则悬停光标样式不会更改为指针
解决方案5
0 2014-01-08 17:22:35
使用{{someFn}}时，您需要使用$ parse（）来处理标记。
解决方案6
0 2016-09-22 17:39:17
I mixed some things here and I have it working. 我在这里混合了一些东西，我有它的工作。
I have a menu with some options, each one calls a different method on the controller. 我有一个带有一些选项的菜单，每个选项在控制器上调用不同的方法。
<span ng-show="hoverOptions" ng-mouseleave="hoverOut()" class="qk-select ui-select-container qk-select--div">
<ul>
<li ng-repeat="option in menuOptions"><a href="javascript:void(0);" ng-click="callFunction(option.action)">{{option.name}}</a></li>
</ul>
</span>
The callFunction method in the controller is defined like that: 控制器中的callFunction方法定义如下：
$scope.callFunction = function (name){
if(angular.isFunction($scope[name]))
$scope[name]();
}
And the menu options are defined also in the controller in that way: 菜单选项也以这种方式在控制器中定义：
$scope.menuOptions = [{action: "uploadPhoto" , name:"Cargar foto"}, {action: "logout", name:"Cerrar sesión"}, {action: "createUser", name:"Nuevo usuario"}];
Hope it helps someone. 希望它可以帮助某人。
解决方案7
0 2018-10-08 15:16:05
solution: https://embed.plnkr.co/bhMcEO/ 解决方案： https ： //embed.plnkr.co/bhMcEO/
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>$window or $location to Redirect URL in AngularJS</title>
<link rel="stylesheet" href="style.css" />
<script src="https://code.angularjs.org/1.4.1/angular.js"></script>
<script>
var app = angular.module('RedirectURLApp', []);
app.controller('RedirectURLCtrl', function($scope, $window) {
$scope.name = 'Anil';
$scope.RedirectToURL = function() {
var host = $window.location.host;
var landingUrl = "http://www.google.com";
alert(landingUrl);
$window.location.href = landingUrl;
};
});
</script>
</head>
<body ng-app="RedirectURLApp">
<div ng-controller="RedirectURLCtrl">
<h2>$window or $location to Redirect URL in AngularJS</h2>
<p>Hello {{name}},</p>
Click to Redirect <a href="" ng-click="RedirectToURL()">Click Me!</a>
</div>
<div><h4><a href="http://www.code-sample.com/2015/06/redirect-to-new-page-using-location-or.html">For more detail..</a></h4></div>
</body>
</html>
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