I am trying to make the button non-functional after the number of clicks are equal to the value entered in the text boy.
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
Student <input type="input" ng-model="number"> <br>
<p> {{number}} </p>
<button ng-click= "myFunction()">Click Me!</button>
<p>{{ count }}</p>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.count=0;
$scope.number;
$scope.myFunction = function() {
$scope.count++;
$scope.count <= $scope.number;
}
});
</script>
</body>
</html>
If you're looking for a Angular 2+ implementation, you could use two-way binding to ngModel directive. Try the following
Controller
export class AppComponent {
buttonCount = 0;
studentCount = 0;
onClick() {
this.buttonCount++;
}
}
Controller
Student <input [(ngModel)]="studentCount" (keyup)="buttonCount = 0" type="input"> <br>
Number input: {{ studentCount }}
<br><br>
<button [disabled]="buttonCount >= studentCount" (mouseup)="onClick()">Click me</button>
<br>
Button clicks: {{ buttonCount }}
The (keyup)="buttonCount = 0" event in the input tag resets the button click count everytime a value is entered in the input.
Working example: Stackblitz
If you're new to Angular, I'd recommend you to go through this tutorial. It introduces some of the basics.
I would do something like this:
Add a ng-disabled attribute to the button, this will disable the button when the expression is truthy.
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
Student <input type="input" ng-model="number"> <br>
<p> {{number}} </p>
<button ng-disabled="count >= number" ng-click= "myFunction()">Click Me!</button>
<p>{{ count }}</p>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.count=0;
$scope.number;
$scope.myFunction = function() {
$scope.count++;
$scope.count <= $scope.number;
}
});
</script>
</body>
</html>
If you are starting out and can switch, I would recommend trying Angular 2+ instead of AngularJS. It's much more intuitive IMO.
You can use ng-disabled directive. You can disable the button after the number of clicks.
Related
I am entering numbers in two fields and showing another field using arithmetic calculation.In that I wanna one call and that calculation and want to calculate using input type=" text" only not a number.
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
First Name:
<input type="text" ng-model="firstvalue">
<br> Last Name:
<input type="text" ng-model="lastvalue">
<br>
<br>
<br> Total:
<input type="text" ng-model="total=firstvalue + lastvalue" ng-change="changed()" disabled="disabled">
<br>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.changed = function() {
alert("Total" + $scope.total);
};
});
</script>
</body>
</html>
i want to sum those two value.want show the sum in third field and also when change the third field need to call one function like ng-change that field need to disable.
You have very weird and unclear requirement. But this should help - https://jsfiddle.net/4qohy46L/
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
First Name:
<input type="text" ng-model="firstName" ng-change="recalculate()">
<br> Last Name:
<input type="text" ng-model="lastName" ng-change="recalculate()">
<br>
<br>
<br> Total:
<input type="text" ng-model="total">
<br>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.recalculate = function() {
var tempFirst = 0, tempSecond = 0
if($scope.firstName)
tempFirst = $scope.firstName;
if($scope.lastName)
tempSecond = $scope.lastName;
$scope.total = parseInt(tempFirst) + parseInt(tempSecond);
};
});
</script>
</body>
</html>
Please feel free to tell me if I have not correctly understood your question. And always prepare a fiddle or a plunker when you post a question on SO it makes it easier for people who want to help you :)
I have a view where the user gives an input and display it in another view.
view 1:
<ion-content ng-controller="controller">
<input type="text" ng-model="name">
<button ng-click="save()">Save</button>
Controller:
$scope.save = function () {
$scope.displayName = $scope.name;
$state.go('app.viewTwo');
}
View 2:
<ion-content ng-controller="controller">
{{displayName}}
</ion-content>
Its known, that whenever a view is loaded the controller is initialized fresh every time. So how to display the value from the first view, in another view.
You need to use a service or factory to use the variable across the controllers.
DEMO:
var app = angular.module("clientApp", [])
app.controller("TestCtrl",
function($scope,names) {
$scope.names =[];
$scope.save= function(){
names.add($scope.name);
}
$scope.getnames = function(){
$scope.names = names.get();
}
}
);
app.factory('names', function(){
var names = {};
names.list = [];
names.add = function(message){
names.list.push({message});
};
names.get = function(){
return names.list;
};
return names;
});
<!doctype html>
<html >
<head>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.5.8/angular.min.js"></script>
<script src="script.js"></script>
</head>
<body ng-app="clientApp">
<div ng-controller="TestCtrl">
<input type="text" ng-model="name">
<button ng-click="save()" > save</button>
</div>
<div ng-init="getnames()" ng-controller="TestCtrl">
<div ng-repeat="name in names">
{{name}}
</div>
</div>
</body>
</html>
You can also use $rootScope , but it is not a recommended way.
I want to make a button and when I click on it launch a html page. How can I do it?
Here is the incomplete example:
<button ng-model="status" ng-init="status=true" ng-click="status=!status">
<span ng-show="status == true" >Activo</span>
<span ng-show="status == false">Desactivo</span>
</button>
Thanks for all.
You can use an simple 'a' tag to solve that:
Lunch somepage.html
You can solve this using angularjs too, here is an example:
<!DOCTYPE html>
<html>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
<button ng-model="status" ng-init="status=true" ng-click="myFunc()">
<span ng-show="status == true" >Activo</span>
<span ng-show="status == false">Desactivo</span>
</button>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope, $window) {
$scope.myFunc = function(){
$scope.status = !$scope.status;
$window.location.href = '/somepage.html'; //this will redirect you to somepage.html
}
});
</script>
</body>
</html>
I'm trying to iterate through an array created using angular, so I can add them up and then show them, but the problem is, I'm getting an error saying that property '1' of undefined even if I fill out the input field, why is this?
My code:
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.0/angular.min.js"></script>
<title>jQueryForm</title>
</head>
<body ng-app="myApp" ng-controller="myCtrl">
<div id="form" ng-init="dataSet = [{},{},{},{},{}]">
<div ng-repeat="data in dataSet">
<input type="checkbox" ng-model="data.checked" />
<label>Data:</label>
<input type="number" ng-model="data.number" />
<br/>
</div>
<span>{{result}}</span>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
for (var i = 1; i < 5; i++) {
$scope.result += $scope.dataSet[i];
}
});
</script>
</div>
</div>
</span>
</body>
</html>
As ng-init is special kind of directive which evaluates expression provided to it in preLink function of directive.
PreLink function: - this function gets evaluates after scope has been
created for that element
By reading above line you will come to know that it has evaluated for loop before $scope.dataset getting available. Which is obiviously going to get fail.
I'd say don't use ng-init for such cases. Place that initialization data inside controller itself.
Code
//remove ng-init directive from UI
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
function init(){
for (var i = 1; i < 5; i++) {
if($scope.dataSet[i].checked)
$scope.result += $scope.dataSet[i].number;
}
}
//init
$scope.dataSet = [{},{},{},{},{}]
init();
});
You have to initialize dataSet differently this time around. Just add it to the controller's scope instead of using ng-init.
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.0/angular.min.js"></script>
<title>jQueryForm</title>
</head>
<body ng-app="myApp" ng-controller="myCtrl">
<div id="form">
<div ng-repeat="data in dataSet">
<input type="checkbox" ng-model="data.checked" />
<label>Data:</label>
<input type="number" ng-model="data.number" />
<br/>
</div>
<span>{{result}}</span>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.dataSet = [{},{},{},{},{}];
for (var i = 1; i < 5; i++) {
$scope.result += $scope.dataSet[i];
}
});
</script>
</div>
</div>
</span>
</body>
</html>
To make the code work, though, you'll have to change a few things. The loop in which you try adding the numbers will be called only once - at instantiation time of the controller. At that time, no number has been entered, yet. You could solve it with a button. (Also add up the numbers, not the objects in dataSet)
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.0/angular.min.js"></script>
<title>jQueryForm</title>
</head>
<body ng-app="myApp" ng-controller="myCtrl">
<div id="form">
<div ng-repeat="data in dataSet">
<input type="checkbox" ng-model="data.checked" />
<label>Data:</label>
<input type="number" ng-model="data.number" />
<br/>
</div>
<button ng-click="calculate()">calculate</button>
<span>{{result}}</span>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.dataSet = [{},{},{},{},{}];
$scope.calculate = function() {
$scope.result = 0;
for (var i = 0; i < $scope.dataSet.length; i++) {
if(angular.isNumber($scope.dataSet[i].number) && $scope.dataSet[i].checked)
$scope.result += $scope.dataSet[i].number;
}
};
//Edit. Doesn't have the best performance, keep dataSet small
$scope.$watch('dataSet', function(newValue, oldValue) {
$scope.calculate();
}, true);
});
</script>
</div>
</div>
</span>
</body>
</html>
I fixed a few more things here and there. I assumed, you wanted to add only those numbers that were checked - also, the ng-models without a value were causing problems, that's why the check for being a number was introduced.
edit:
As you wanted to do it without the button: You can use a deep $scope.$watch.
https://docs.angularjs.org/api/ng/type/$rootScope.Scope#$watch
Thanks to #Pankaj Parkar and #JanS, I finally made what I wanted to, everytime the input is changed I call the function calculate(); and everytime a checkbox is clicked on I call it as well.
Code:
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.0/angular.min.js"></script>
<title>jQueryForm</title>
</head>
<body ng-app="myApp" ng-controller="myCtrl">
<div id="form">
<div ng-repeat="data in dataSet">
<input ng-click="calculate()" type="checkbox" ng-model="data.checked" />
<label>Data:</label>
<input ng-change="calculate()" type="number" ng-model="data.number" />
<br/>
</div>
<span>{{result}}</span>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.dataSet = [{}, {}, {}, {}, {}];
$scope.calculate = function() {
$scope.result = 0;
for (var i = 0; i < $scope.dataSet.length; i++) {
if (angular.isNumber($scope.dataSet[i].number) && $scope.dataSet[i].checked)
$scope.result += $scope.dataSet[i].number;
}
}
});
</script>
</div>
</div>
</span>
</body>
</html>
I'm reading through some docs and books about Angular, but I don't really find an angular way of the following problem:
If I have a controller (let's say CardController), and another controller which handles the creation of multiple instances of the CardController. How should I implement the HTML-stuff? I want to be able to instantiate a Card, which has a specific HTML-code (like the one below) and is connected to the CardController.
I don't think that I should pollute the CardController to setup the HTML stuff with ugly .append-stuff. Or is this the way? Should I write an extra service for the HTML representation like CardView or create an extra directive?
If you look at this example, I want to be able to click on "Add another card" and see another instance of a card added below (so basically the ability to have multiple items):
<!DOCTYPE html>
<html ng-app="theApp">
<head>
<script data-require="angular.js#1.4.6" data-semver="1.4.6" src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.6/angular.min.js"></script>
</head>
<body>
<div ng-controller="MainController">
<button ng-click="add()">Add another card</button>
</div>
<div id="content">
<div ng-controller="CardController">
<h1>{{ title }}</h1>
<p>{{ message }}</p>
</div>
</div>
<script>
(function() {
var app = angular.module("theApp", []);
app.controller('MainController', function($scope) {
$scope.add = function() {
// Setup HTML for TheController:
// add another DIV/H1/P-etc. to #content,
// just like the one at the beginning.
console.log("Add another card");
};
});
app.controller('CardController', function($scope) {
$scope.title = "A Title";
$scope.message = "Some message";
});
}());
</script>
</body>
</html>
Try this code from my snippet:
(function() {
var app = angular.module("theApp", []);
app.controller('MainController', function($scope) {
var iter = 1;
$scope.cards = [{
id: 1
}];
$scope.add = function() {
$scope.cards.push({
id: ++iter
});
// Setup HTML for TheController:
// add another DIV/H1/P-etc. to #content,
// just like the one at the beginning.
console.log("Add another card");
};
});
app.controller('CardController', function($scope) {
$scope.title = "A Title";
$scope.message = "Some message";
});
}());
<!DOCTYPE html>
<html ng-app="theApp">
<head>
<script data-require="angular.js#1.4.6" data-semver="1.4.6" src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.6/angular.min.js"></script>
</head>
<body ng-controller="MainController">
<div>
<button ng-click="add()">Add another card</button>
</div>
<div id="content">
<div ng-repeat="card in cards" ng-controller="CardController">
<h1>{{ title }}</h1>
<p>{{ message }}</p>
</div>
</div>
</body>
</html>
There is few options. For example you can use angular directives (for me this is the most elegant solution) and create HTML structure like this:
<div ng-controller="MainController">
<button ng-click="add()">Add another card</button>
<div id="content">
<your-card-directive ng-repeat="card in cards" card-data="card"></your-card-directive>
</div>
</div>
or use ng-include to load HTML from your HTML files:
<div ng-controller="MainController">
<button ng-click="add()">Add another card</button>
<div ng-repeat="card in cards" ng-controller="CardController as CardCtrl" ng-include="'../../your-card-template.html'"></div>
</div>
or just use inline HTML:
<div ng-controller="MainController">
<button ng-click="add()">Add another card</button>
<div ng-repeat="card in cards" ng-controller="CardController">
<h1>{{ title }}</h1>
<p>{{ message }}</p>
</div>
</div>
one approach
<div ng-repeat="test in tests>{{test}}</div>
$scope.tests = ["Test Message","Test Message 2"];
$scope.tests.push("new msg");
this vl automatically create a div and ur list grows
or
http://blog.sodhanalibrary.com/2014/08/append-or-prepend-html-to-div-using.html#.Vhz-NxOqqko