Here's my code, however ng-change is never called. Does anyone know why ? Thanks
<html ng-app="">
<head>
</head>
<body data-ng-init="names=['A', 'B', 'C']">
<script src="resources/js/angular/angular.min.js"></script>
<script src="resources/js/angular/angular.min.js.map"></script>
<select class="form-control input-sm"
ng-model="fda"
ng-change="alert('changed')"
ng-options= "value for value in names" >
</select>
</body>
</html>
You need to have a controller and a corresponding function inside of it,
app.controller("myCtrl", function($scope) {
$scope.alert = function (){
alert("changed");
}
});
DEMO
var app = angular.module("myApp", []);
app.controller("myCtrl", function($scope) {
$scope.alert = function (){
alert("changed");
}
});
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body ng-app="myApp" ng-controller="myCtrl">
<div ng-init="names=['A', 'B', 'C']">
<select class="form-control input-sm" ng-model="fda" ng-change="alert('changed')" ng-options="value for value in names">
</select>
</div>
</body>
</html>
Just add this line in your controller $scope.alert = alert.bind(window);
var app = angular.module("myApp", []);
app.controller("myCtrl", function($scope) {
$scope.alert = alert.bind(window);
});
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body ng-app="myApp" ng-controller="myCtrl">
<div ng-init="names=['A', 'B', 'C']">
<select class="form-control input-sm" ng-model="fda" ng-change="alert('changed')" ng-options="value for value in names">
</select>
</div>
</body>
</html>
Related
I need something like this:
<div ng-repeat="customer in customers">
<select ng-options="option.Name for option in **getOptions(customer.ID)**"></select>
</div>
Is it possible?
Yes , as long as the function is synchronous. Using a filter expression in ng-options is also an alternative
const app = angular.module('myApp', []);
app.controller('myCtrl', function() {
this.getNames = () => ["Emil", "Tobias", "Linus"]
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<div ng-app="myApp" ng-controller="myCtrl as $ctrl">
<select ng-model=" $ctrl.selectedName" ng-options="item for item in $ctrl.getNames()" size=5>
</select>
<p ng-if=" $ctrl.selectedName">Selected: {{ $ctrl.selectedName}}</p>
</div>
const app = angular.module('myApp', []);
app.controller('myCtrl', function() {
this.getNames = () => ["Emil", "Tobias", "Linus"]
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<div ng-app="myApp" ng-controller="myCtrl as $ctrl">
<select ng-model=" $ctrl.selectedName" ng-options="item for item in $ctrl.getNames()" size=5>
</select>
<p ng-if=" $ctrl.selectedName">Selected: {{ $ctrl.selectedName}}</p>
</div>
Thank you for your answer. But I can't work it. My code below.
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Test</title>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<script>
var app = angular.module("MainModule", []);
app.controller('TestController', function ($scope, $http, $filter) {
$scope.one = ["Sam", "Samantha", "George"]
$scope.two = ["Jack", "Sandra", "Bill"]
$scope.getOptions = function (id) {
if (id === 1) {
return $scope.one;
}
else if (id ===2) {
return $scope.two;
}
};
});
</script>
</head>
<body ng-app="MainModule" ng-controller="TestController>
<div>
<select ng-options="item for item in TestController.getOptions(1)"></select>
<select ng-options="item for item in TestController.getOptions(2)"></select>
</div>
</body>
</html>
I am learning AngularJS and trying to understand the $scope part, I was trying to do string combine by creating three variables(ng-model) and see how javascript works with angularJS. Say if I insist on creating three of the ng-model, how do I combine the two strings and put them together in the rstString? I tried to read the $scope elements and the data is there, so what did I miss? Thank you.
<!DOCTYPE html>
<html>
<head>
<title>angularJS for beginners</title>
<script src="../angular-1.7.9/angular.min.js"></script>
</head>
<body>
<h4>combine two string using strong expression</h4>
<div ng-app="myApp" ng-controller="myCtrl">
First String : <input type="text" ng-model="firstString" ng-init="firstString='hello '"/><br><br>
Second String: <input ng-model="secondString" ng-init="secondString=' world'"/><br><br>
Resulting String:<p style="color:blue;font-weight:bold;" ng-model="rstString" ng-init="rstString='aaa'"></p>
</div>
<script>
var app = angular.module("myApp", []);
app.controller("myCtrl", function($scope) {
console.log($scope);
console.log("1st:"+$scope.firstString);
console.log("2nd:"+$scope.secondString);
console.log("rst:"+$scope.rstString);
$scope.rstString = $scope.firstString +$scope.secondString;
});
</script>
</body>
</html>
I added a button in your example :
<!DOCTYPE html>
<html>
<head>
<title>angularJS for beginners</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.3.4-build.3588/angular.js"></script>
</head>
<body>
<h4>combine two string using strong expression</h4>
<div ng-app="myApp" ng-controller="myCtrl">
First String : <input type="text" ng-model="firstString" ng-init="firstString = 'hello '"/><br><br>
Second String: <input ng-model="secondString" ng-init="secondString=' world'"/><br><br>
Resulting String:<p style="color:blue;font-weight:bold;" ng-model="rstString" ng-init="rstString='aaa'">{{rstString}}</p>
<button ng-click="concat()">Concat</button>
</div>
<script>
var app = angular.module("myApp", []);
app.controller("myCtrl", function($scope) {
$scope.concat = function() {
$scope.rstString = $scope.firstString +$scope.secondString;
}
});
</script>
</body>
</html>
You can do like this too :
<!DOCTYPE html>
<html>
<head>
<title>angularJS for beginners</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.3.4-build.3588/angular.js"></script>
</head>
<body>
<h4>combine two string using strong expression</h4>
<div ng-app="myApp" ng-controller="myCtrl">
First String : <input type="text" ng-model="firstString"/><br><br>
Second String: <input ng-model="secondString"/><br><br>
Resulting String:<p style="color:blue;font-weight:bold;" ng-model="rstString">{{rstString}}</p>
<button ng-click="concat()">Concat</button>
</div>
<script>
var app = angular.module("myApp", []);
app.controller("myCtrl", function($scope) {
$scope.firstString = 'hello ';
$scope.secondString = ' world ';
$scope.rstString = 'aaa';
$scope.concat = function() {
$scope.rstString = $scope.firstString +$scope.secondString;
}
});
</script>
</body>
</html>
you can use ng-change event
<!DOCTYPE html>
<html>
<head>
<title>angularJS for beginners</title>
<script src="../angular-1.7.9/angular.min.js"></script>
</head>
<body>
<h4>combine two string using strong expression</h4>
<div ng-app="myApp" ng-controller="myCtrl">
First String : <input type="text" ng-model="firstString" ng-init="firstString='hello '" ng-change="handleChange()"/><br><br>
Second String: <input ng-model="secondString" ng-init="secondString=' world'" ng-change="handleChange()"/><br><br>
Resulting String:<p style="color:blue;font-weight:bold;" ng-model="rstString" ng-init="rstString='aaa'"></p>
</div>
<script>
var app = angular.module("myApp", []);
app.controller("myCtrl", function($scope) {
console.log($scope);
console.log("1st:"+$scope.firstString);
console.log("2nd:"+$scope.secondString);
console.log("rst:"+$scope.rstString);
$scope.handleChange = () => {
$scope.rstString = $scope.firstString +$scope.secondString;
};
});
</script>
</body>
I am new to Angular.js. I am testing dynamic population of ng-hide attribute. Selecting false should make the text visible. But it's not working. Please help!
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
<p>Select an Option</p>
<select ng-model="selectedVal" ng-options="x for x in option" >
</select>
<p ng-hide= "{{selectedVal}}" >I am visible.</p>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.option = ["True", "False"];
});
</script>
</body>
</html>
Use ng-hide= "selectedVal", not ng-hide= "{{selectedVal}}", you don't need to interpolate it with {{}}. Also change your array of strings ["True", "False"] to boolean [true,false]
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
<p>Select an Option</p>
<select ng-model="selectedVal" ng-options="x for x in option" >
</select>
<p ng-hide= "selectedVal" >I am visible.</p>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.option = [true, false];
});
</script>
</body>
</html>
Here is a snippet:
<!document html>
<html ng-app>
<head>
<title>First</title>
<script src="D:\Coding\angular.min.js" type="text/javascript"></script>
</head>
<body>
<div ng-controller="FirstController">
<input id="Text1" type="text" ng-model="user.name" />
<div>{{user.name}}</div>
</div>
<script>
function FirstController($scope){
$scope.user = {name: ""};
};
</script>
</body>
</html>
Open the .html file with Chrome, the '{{user.name}}' shows on the screen. I think the {{}} position should be the same with the textbox content, what's wrong?
You need to use like this :
<ng-app="Your Module Name ">
In controller write
var app=angular.module("your module name (can be anything)",[]).controller("myCtrl", function("your dependencies "){});
Hope it will work
In the ng-app attribute you need to add app name like as ng-app="myApp"
<div ng-app="myApp" ng-controller="myCtrl">
First Name: <input type="text" ng-model="firstName"><br>
Last Name: <input type="text" ng-model="lastName"><br>
<br>
Full Name: {{firstName + " " + lastName}}
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.firstName = "John";
$scope.lastName = "Doe";
});
</script>
If you are using angular version below 1.3 it should work
DEMO
<!DOCTYPE html>
<html ng-app>
<head>
<script src="https://code.angularjs.org/1.2.3/angular.js"></script>
</head>
<body>
<div ng-controller="FirstController">
<input id="Text1" type="text" ng-model="user.name" />
<div>{{user.name}}</div>
</div>
<script>
function FirstController($scope){
$scope.user = {name: "test"};
};
</script>
</body>
</html>
You need to add like this
ng-app="yourappname"
Refer ng-app directive in documentation
In the following AngularJS code:
<!doctype html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.18/angular.min.js" ></script>
</head>
<script type="text/javascript">
var myApp = angular.module('myApp', []);
myApp.controller('MainCtrl', ['$scope', function ($scope) {
}]);
</script>
<body>
<div ng-app="myApp">
<div ng-controller="MainCtrl">
<script>
function Ctrl($scope) {
$scope.name = 'Whirled';
}
</script>
<div ng-controller="Ctrl">
<input type="text" ng-model="name" ng-focus=""><br>
<input type="text" ng-model="place"><br>
</div>
</div>
</div>
</body>
</html>
I want to set focus on the first input element. There isn't an example of this on angular.org and the code above doesn't work. How do you use ng-focus? Does this directive even exist at all?