I've got this code:
<html>
<head>
</head>
<div ng-app="" ng-controller="Test">
<input type="text" ng-model="inputty">
<p>{{output}}</p>
</div>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.15/angular.min.js"></script>
<script>
function Test($scope){
if($scope.inputty=="Hello") {
$scope.output="OK!";
} else {
$scope.output="NOT OK!";
}
}
</script>
</html>
But it's not working, the NOT OK! displays. But it's like the if statement can't read from inputty. So it should state OK! when I type Hello in the input box.
You need to add in a watch in your controlller in order to check the value of inputty and inside the watch function have the if loop so that you can change the output scope variable
Code:
function Test($scope) {
$scope.inputty = '';
$scope.$watch('inputty', function () {
if ($scope.inputty == "Hello") {
$scope.output = "OK!";
} else {
$scope.output = "NOT OK!";
}
});
}
Working Fiddle - $watch
Reference for $watch
Alternatively,
You can do it alone in HTML markup using ng-switch
HTML markup
<div ng-app ng-controller="Test">
<input type="text" ng-model="inputty" />
<div ng-switch="inputty">
<p ng-switch-when="Hello">OK!</p>
<p ng-switch-default>NOT OK!</p>
</div>
</div>
Working Fiddle - ng-switch
Reference for ng-switch
If you only change your inputty through textbox, the easiest way is to use ngChange.
Related
I have HTML code with inline element:
<span class="title" ng-click="update()">Rock</span>
How to replace this element on input element after click for edit?
And then after push enter on input return back span element?
I tried with directives ng-hide(), ng-show(). But I wonder
You can use either
<span class="title" ng-hide="isEdited" ng-click="update()">Rock</span>
or
<span class="title" ng-show="!isEdited" ng-click="update()">Rock</span>
or even
<span class="title" ng-if="!isEdited" ng-click="update()">Rock</span>
In any case you will want to reference something that can be truthy. For example in your controller you would have something like this in your function
/*the init function just makes sure that everything is setup
and nothing caries over from any local storage or anything
else you may be using*/
init();
init function(){
$scope.isEdited = false;
}
$scope.update = function(){
$scope.isEdited = true;
}
What you need to do is set a variable that contains the state;
<html>
<body ng-app="app">
<div ng-controller="mainController as $ctrl">
<span ng-if="!$ctrl.isInEditMode" class="title" ng-click="$ctrl.update()" ng-bind="$ctrl.spanText"></span>
<div ng-if="$ctrl.isInEditMode">
<input type="text" placeholder="Value for rock" ng-model="$ctrl.spanText" />
<button ng-click="$ctrl.update()">Done</button>
</div>
</body>
</html>
angular.module('app', [])
.controller('mainController', function($scope) {
this.isInEditMode = false;
this.spanText = 'Rock';
this.update = (function() {
this.isInEditMode = !this.isInEditMode;
}).bind(this);
});
I have prepared a Codepen that shows an possible solution: http://codepen.io/stefferd/pen/QdQrrv
I have the following code :-
<!DOCTYPE html>
<html lang="en">
<head>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.4/angular.min.js"></script>
</head>
<body ng-app="app" ng-controller="ctrl" ng-init="init()">
<div class="container" style="width:400px">
<div class="panel panel-default">
<div class="panel-body">
<form>
<div class="form-group">
<label for="selectedBasket">Select basket :</label>
<select id="selectedBasket" class="form-control" ng-model="selectedBasket" ng-options="b.name for b in baskets">
</select>
</div>
<div ng-repeat="f in fruits" class="checkbox">
<label>
<input type="checkbox" value="" ng-checked="selectedBasket !== null && selectedBasket.items.indexOf(f) !== -1">
{{ f }}
</label>
</div>
</form>
</div>
</div>
</div>
<script>
var app = angular.module('app', []);
app.controller('ctrl', function($scope) {
$scope.init = function() {
$scope.baskets = [{'name': 'mary', 'items': ['apple', 'orange']}, {'name': 'jane', 'items': ['banana']}];
$scope.fruits = ['apple', 'banana', 'cherry', 'orange', 'watermelon'];
$scope.selectedBasket = null;
};
});
</script>
</body>
</html>
if I select Mary or Jane, I can correctly see the correct items in their basket checked. However if I manually check all the fruits and then look at Mary or Jane, it doesn't exclude the items that are not in their baskets. Why is ng-checked failing?
Bonus question, is it best practise to set selectedBasket to null and checking for null in a directive assuming I want nothing as a default value, is there a better way?
You've got no ng-model in your checkbox so your manual action isn't registered anywhere.
ng-checked is only used to make a 'slave' checkbox it can take no manual action.
My guess is you should use a ng-model initialized to your ng-check value instead of using a ng-checked.
If you want to keep your ng-checked what you can do is :
<input type="checkbox" ng-click="selectedBasket.items.push(f)" ng-checked="selectedBasket !== null && selectedBasket.items.indexOf(f) !== -1">
in fact it's still wrong... must be tired, use a toogle function in your ng-click which add or remove the item should be better...
Had the same problem with ng-check, tried everything but nothing worked. I wanted to control the number of checked Items when clicked to 2, so I used the $Event sent with ng-click and disable it.
Here is a sample code:
<input type="checkbox" ng-click="toggleCheck($event, product._id);"
ng-checked="isChecked(product._id)">
$scope.toggleCheck($event, productId){
if ( $scope.featuredProducts.indexOf(productId) === -1) {
if ($scope.featuredProducts.length < 2) {
$scope.featuredProducts.push(productId);
}else {
$event.preventDefault();
$event.stopPropagation();
}
} else {
$scope.featuredProducts.splice( $scope.featuredProducts.indexOf(productId), 1);
}
}
$scope.isChecked(productId){
return ($scope.featuredProducts.indexOf(productId) !== -1);
}
I have a problem to show INPUT field when do some action.
I have BUTTON (Click here) as soon as user made a click event on button i wanted to show input field
I have done this by using jQuery.
Can any one help me in Angular.js
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.boxShow = false;
});
</script>
<div ng-app="myApp">
<div ng-controller="myCtrl">
show box
<div ng-show="boxShow">
<textarea rows="4" cols="50">text</textarea>
</div>
</div>
</div>
https://jsfiddle.net/bxwjpmaa/1/
HTML
<div class="btn btn-primary" ng-click="openTextBox();">Click Me To open text box</div>
<div ng-show="openTextBox == true">
<input type="text"/>
</div>
SCRIPT :
$scope.openTextBox = function () {
$scope.openTextBox = true;
}
please don't take scope variables and function names same
example here
$scope.openTextBox = function () {
$scope.openTextBox = true;
}
//this is not correct as per angular documentation because scope.openTextBox name already assigned to scope function,again its assigning scope variable "$scope.openTextBox = true" here u will get errors when ever u clicked div second time" TypeError: boolean is not a function" it will throw this error.so please dont use which is already assigned scope function dont assign scope variable
see this fiddle url : https://jsfiddle.net/veerendrakumarfiddle/bxwjpmaa/2/
<!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">
<ol>
<li ng-repeat="element in elements">
<input type="text" ng-model="element.value"/>
</li>
</ol>
<br/>
<b>Click here to add Textbox:</b><br/><input type="button" value="New Item" ng-click="newItem()"/>
<br/>
<br/>
<b>Click here to see ng-model value:</b><br/>
<input type="button" value="submit" ng-click="show(elements)">
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
var counter=0;
$scope.elements = [ {id:counter, value : ''} ];
$scope.newItem = function(){
counter++;
$scope.elements.push( { id:counter,value:''} );
}
$scope.show=function(elements)
{
alert(JSON.stringify(elements));
}
});
</script>
</body>
</html>
It seems so easy but I can't get this to work:
I want ng-repeat to show the entry only when istLand == 1.
<body ng-app>
<div ng-controller="Ctrl">
<div ng-repeat="ort in orte | filter:{istLand : 1}">
{{ ort.ortsname }}
</div>
</div>
</body>
function Ctrl($scope) {
$scope.orte = {"2812197":{"ortsname":"Berlin","istLand":1},
"2829695":{"ortsname":"Munich","istLand":0}}
}
you can try something like this
<div ng-repeat="ort in orte">
<span ng-if="ort.istLand == 1">{{ ort.ortsname }} </span>
</div>
OR
your code will work if you following below structure
$scope.orte = [
{id:"2812197", ortsname:"Berlin", istLand:1},
{id:"2829695", ortsname:"Munich", istLand:0}
]
here is the Demo Fiddle
By using custom filter in angularjs, implement the same.
function Ctrl($scope) {
$scope.orte = {"2812197":{"ortsname":"Berlin","istLand":1},"2829695":{"ortsname":"Munich","istLand":0},"2829694":{"ortsname":"Delhi","istLand":1},"2829696":{"ortsname":"Beijing","istLand":0},"2829698":{"ortsname":"Sydney","istLand":1}}
}
angular.module('myApp', []).
filter('istLandCheck', function() {
return function(orte,istLand) {
var out=[];
angular.forEach(orte, function(ort,value){
if(ort.istLand==1){
out.push(ort);
}
});
return out;
}
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.22/angular.min.js"></script>
<body ng-app="myApp">
<div ng-controller="Ctrl">
<div ng-repeat="ort in orte|istLandCheck">
{{ ort.ortsname }}
</div>
</div>
</body>
I am trying to do some calculation but it is getting done as soon as I enter the amount. I just want this to happen on click of a button rather than automatically.
What I have done so far:
<!DOCTYPE html>
<html ng-app="myAppModule">
<head>
<title>Angular JS - programming-free.com</title>
<link href="https://dl.dropbox.com/u/96099766/DetailModalExample/bootstrap.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="lib/angularjs.min.js"></script>
</head>
<body>
<div ng-controller="myAppController" style="text-align:center">
<p style="font-size:28px;">
Enter Quantity:
<input type="text" ng-model="quantity"/>
</p>
<h2>Total Cost: Rs.{{calculateval(quantity,10)}}</h2>
</div>
<script type="text/javascript">
var myAppModule = angular.module('myAppModule', []);
myAppModule.controller('myAppController', function($scope,calculateService) {
$scope.quantity=1;
$scope.calculateval = function(xval,yval) {
return calculateService.calculate(xval,yval);
}
});
// Service
myAppModule.factory('calculateService', function(){
return {
calculate: function(xval,yval){
return xval*yval;
}
}
});
</script>
</body>
</html>
The calculation occurs immediately since the calculation call is bound in the template, which displays its result when quantity changes.
Instead you could try the following approach. Change your markup to the following:
<div ng-controller="myAppController" style="text-align:center">
<p style="font-size:28px;">Enter Quantity:
<input type="text" ng-model="quantity"/>
</p>
<button ng-click="calculateQuantity()">Calculate</button>
<h2>Total Cost: Rs.{{quantityResult}}</h2>
</div>
Next, update your controller:
myAppModule.controller('myAppController', function($scope,calculateService) {
$scope.quantity=1;
$scope.quantityResult = 0;
$scope.calculateQuantity = function() {
$scope.quantityResult = calculateService.calculate($scope.quantity, 10);
};
});
Here's a JSBin example that demonstrates the above approach.
The problem with this approach is the calculated result remains visible with the old value till the button is clicked. To address this, you could hide the result whenever the quantity changes.
This would involve updating the template to add an ng-change on the input, and an ng-if on the result:
<input type="text" ng-change="hideQuantityResult()" ng-model="quantity"/>
and
<h2 ng-if="showQuantityResult">Total Cost: Rs.{{quantityResult}}</h2>
In the controller add:
$scope.showQuantityResult = false;
$scope.calculateQuantity = function() {
$scope.quantityResult = calculateService.calculate($scope.quantity, 10);
$scope.showQuantityResult = true;
};
$scope.hideQuantityResult = function() {
$scope.showQuantityResult = false;
};
These updates can be seen in this JSBin demo.