CODEWITHSUNDEEP
javascriptangularjsangularjs-directive
jcubic
jcubic

Reputation: 66560

How to bind data in title element using angular.js

I'm learning Angular.js and I set <title>{{title}}</title> and I try to change that using select element

<select ng-model="user.title">
    <option value="Lorem">Lorem</option>
    <option value="Ipsum">Ipsum</option>
    <option value="Dolor">Dolor</option>
</select>

I try ng-change and ng-select with set()

function ctrl($scope) {
    $scope.title = 'hello'; // this set the title
    $scope.set = function() {
        $scope.title = $scope.user.title; // this not
    };
}

THe function don't work, but it work when I just set it without a function.

I also try to create change directive:

app.directive('change', function() {
    console.log('change');
    return {
        link: function(scope, element, attrs) {
            console.log(arguments);
            element[0].onChange = function() {
                scope[attrs[0]]();
            };
        }
    };
});

but this too don't work. Console.log don't execute at all.

Upvotes: 10

Views: 18731

Answers (5)

CSharp
CSharp

Reputation: 629

When dealing with the title tag you should use ng-bind-template so you don't see the expression in its raw state {{someVar}} before Angular has a chance to kick in. You can add the initial text of the title within the title tag and it will be overwritten by your template.

<html data-ng-app="app">
  <head>
    <title ng-bind-template="My App - {{title}}">My App - Default Title</title>
  </head>
  <body>
    {{title}}
    <select ng-model="title">
      <option value="Lorem">Lorem</option>
      <option value="Ipsum">Ipsum</option>
      <option value="Dolor">Dolor</option>
    </select>
  </body>
</html>

Upvotes: 19

PythonDev
PythonDev

Reputation: 4317

I figured out one solution to set title in <title> tag.

main.js :

app = angular.module('myApp', ['ngRoute']);
app.config(['$routeProvider', '$locationProvider', function($routeProvider,$locationProvider) {
    $locationProvider.html5Mode(true);
    $routeProvider.
      when("/faq", {
      controller: "MYCtrl",
      templateUrl: "../assets/templates/faq.html",
      title: "FAQ"
    });  

}]);


app.run(['$location', '$rootScope', function( $location, $rootScope ){
  $rootScope.$on("$routeChangeSuccess", function(event, currentRoute, previousRoute) {
    $rootScope.title = currentRoute.title;
  });
}]);

application.html.erb:

<title ng-bind="'MYAPP - ' + $root.title"></title>

Upvotes: 3

Mike Bazhenov
Mike Bazhenov

Reputation: 128

Use $rootScope

.when('/', {
   templateUrl: '/templates/page/home.html',
   controller: ['$scope','$rootScope', function ($scope,$rootScope) {
      $rootScope.title = 'Учитель24.рф';
 }]});

Upvotes: 4

zs2020
zs2020

Reputation: 54524

Since @madhead gave you an awesome answer, I just want to shed some light on your question about why your code doesn't work.

You can definitely use ng-change, please take a look at this code. Your approach is very close, and I guess maybe you missed something?

<ul ng-app="myapp" ng-controller="MainCtrl">
    <div>{{title}}</div>
    <select ng-model="user.title" ng-change="set()">
        <option value="Lorem">Lorem</option>
        <option value="Ipsum">Ipsum</option>
        <option value="Dolor">Dolor</option>
    </select>
</ul>

function MainCtrl($scope) {
    $scope.set = function () {
        $scope.title = $scope.user.title;
    };
}

I want to point out one thing. If you test in jsfiddle, don't use <title>{{title}}</title>, use <div>{{title}}</div> instead. Somehow title tag will not show correctly in the demo window.

Demo

Upvotes: 3

madhead
madhead

Reputation: 33422

Everything should work fine without extra code:

<html data-ng-app="app">
  <head>
    <title>{{title}}</title>
  </head>
  <body>
    {{title}}
    <select ng-model="title">
      <option value="Lorem">Lorem</option>
      <option value="Ipsum">Ipsum</option>
      <option value="Dolor">Dolor</option>
    </select>
  </body>
</html>

And that's all. Here is a pen.

Upvotes: 2

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