In Angular I wanted to bind $index to controller. How can I send $index value in to my controller. Here is my html code.
<body>
<div class="container">
<div class="row row-content" ng-controller="demoController as demoCtrl">
<ul>
<li ng-repeat="val in demoCtrl.list" >Hello {{$index}}</li>
</ul>
</div>
</div>
Here is my controller code
var app = angular.module('confusionApp',[])
app.controller('demoController', function(){
var list = [1,2,3,4,5];
this.list = list;
var array = ['abc','def','ghi','jkl','mno']
this.array = array
console.log(this.array[index]);
});
I need to use ng-modal in HTML and bind that value to some variable in my controller.
Based on the selection of index, it should check in array and respective array should have to print.
Can any of you please help
To get your current iteration position in your controller you have define a function.
So your html code like this.
<body>
<div class="container">
<div class="row row-content" ng-controller="demoController as demoCtrl">
<ul>
<li ng-repeat="val in demoCtrl.list" ng-click="dispArray($index)">Hello {{$index}}</li>
</ul>
</div>
</div>
And your controller code
var app = angular.module('confusionApp',[])
app.controller('demoController', function($scope){
$scope.dispArray = function(index){
// console.log(index);
// your code
}
});
Depending on what you're trying to accomplish you might be better served creating a custom iterator.
function makeIterator(array){
var nextIndex = 0;
return {
next: function(){
return nextIndex < array.length ?
{value: array[nextIndex++], done: false} :
{done: true};
}
}
}
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Iterators_and_Generators
Angular is going to iterate over everything in the list when you use ngRepeat. If you're trying to track which list item a user clicks then you'll just add that in there using $index.
<li ng-repeat="val in demoCtrl.list" >
<span ng-click="demoCtrl.userClicked($index)"> Hello {{$index}}</span>
</li>
If you're just trying to print the data in each item, ng-repeat is already iterating everything for you.
<li ng-repeat="val in demoCtrl.list" >
<span ng-click="demoCtrl.userClicked($index)"> Hello {{val}}</span>
</li>
It all depends on what you're trying to do.
i dont konw what u want to do. if u want to use event. you can pass $index to your controller function like:
<li ng-repeat="val in demoCtrl.list" ng-click="getIndex($index)">Hello {{$index}}
$scope.getIndex = function($index) {
console.log($index)
}
hope to help u.
Related
for(var i=0;i<a.length;i++){
$scope.inputs=[
{name:a[i],value:b[i]}
];
}
this is my Javascript code i want to know how to write (ng-repeat) for arrays
Your JS is invalid, will produce length 1 array. Replace it with this:
$scope.inputs=[];
for(var i=0;i<a.length;i++){// be sure that a.length >=b.length
$scope.inputs.push({name:a[i],value:b[i]}); // push will add new entry to your inputs array.
}
The you can use it in ng-repeat:
<div ng-repeat="entry in inputs"> {{entry.name}} : {{entry.value}} </div>
You don't write loops surrounding a global variable. You leave the variable by itself and then you call the loop. Later you just use the global variable in the html code.
I made a cool snippet so you understand how it works:
angular.module('demo', [])
.controller('Ctrl', ['$scope', function ($scope) {
$scope.inputs = [];
var a = ['name1', 'name2', 'name3'];
var b = [133,233,456];
//this code has to be called somewhere else. It might be part of a function.
for(var i=0; i < a.length; i++){
$scope.inputs.push( {name:a[i],value:b[i]} );
}
}])
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="demo">
<div ng-controller="Ctrl">
<ul>
<li ng-repeat="item in inputs">
<input ng-model="item.name"/>
</li>
</ul>
<!--This is only to display the content of $scope.inputs -->
<pre>{{inputs | json}}</pre>
</div>
</div>
If you have an array in your controller, with a scope that is visible in your html
angular.module('appName').controller('mainCtrl', mainCtrl);
function mainCtrl($scope) {
$scope.inputs = [
key: value,
...
];
}
In your html you would use ng-repeat within the scope of the controller. You can use the ng-repeat directive on several different html tags, such as <ul> lists, a div, select dropdowns and more
<div ng-controller="mainCtrl">
<ul>
<li ng-repeat="item in inputs">{{item.key}} <!-- Prints 'value' --></li>
</ul>
</div>
<ul>
<li ng-repeat="val in [1,2,3]">
<button ng-click="dummy = '{{val}}'">{{val}}</button>
</li>
</ul>
<div>Value : {{dummy}}</div>
I am trying to assign a value when the button is clicked but its not working.
ng-repeat creates its own scope. Since the button is in the ng-repeat, it has an individual scope, and can't access the dummy value. To prevent this, your need to use a dot in your ng-model.
Here is your code, corrected: http://jsfiddle.net/844k52bh/
http://jsfiddle.net/sg39rypn/
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.changeDummyVal=function(val){
$scope.dummy=val;
}
});
You can make function for it
You just need to do:
ng-click="dummy = val "
i.e
<ul>
<li ng-repeat="val in [1,2,3]">
<button ng-click="dummy = val ">{{val}}</button>
</li>
</ul>
<div>Value : {{dummy}}</div>
I am trying to show exact content when I click on data from ng-repeat.
<div ng-repeat="trailSpot in trail.wayPoints">
<a ng-click="viewState.showSpotDetails = !viewState.showSpotDetails">
<p>Spot {{$index + 1}}. {{trailSpot.wpName}}</p>
</a>
<p >{{trailSpot.wpDescription}}</p>
</div>
When I click the first wpName, I want to show wpDescription only about the first wpName on another div. What should I put in that div.
<div class="panel-body" ng-show="viewState.showSpotDetails">
<div>
???
</div>
</div>
Anybody has any tips on what I am trying to do?Thank you!
Just pass the object to assign the property like this:
http://jsfiddle.net/wLs8axLj/
JS
var app = angular.module('itemsApp',[]);
app.controller('ItemsCtrl',function($scope) {
$scope.items = [
{name:'Test 1',details:'Test 1 Details'},
{name:'Test 2',details:'Test 2 Details'}
];
$scope.showDetails = function(i) {
$scope.item_details = i.details;
};
});
HTML
<div ng-app="itemsApp" ng-controller="ItemsCtrl">
<ul>
<li ng-repeat="i in items" ng-click="showDetails(i)">{{i.name}}</li>
</ul>
<hr>
{{item_details}}
</div>
I have a list of items ("locals" array) which I show in a list
<ul class="list-group">
<li ng-repeat="loc in locals" class="list-group-item"><a href="" data-id={{loc.ID}}>{{loc.location}}</a>
</li>
</ul>
I want the user to be able to select an item, and then to use this item in code.
What is the preferred way to do it.
Also I am creating the application for mobile, so I should be able to know that the user chose this item in mobile( and not just use mouseclick for example).
You can make use of angular js ng-click event (on the li item where ng-repeat is and do something like this: fiddle
code snippet of controller:
function MyCtrl($scope) {
$scope.templateList = [{id:1, name: 'Template1'}, {id:2, name: 'Another Template'}]
$scope.template = {};
$scope.setValue = function(list) {
$scope.template.template_id = list.id;
$scope.template.template_name = list.name;
}
}
Of HTML:
<div ng-app>
<form ng-controller="MyCtrl">
<input type="hidden" name="template_id" ng-model="template.template_id" />
<input type="text" name="template_name" ng-model="template.template_name" />
<ul>
<li ng-repeat="list in templateList" ng-click="setValue(list)">{{list.name}}</li>
</ul>
</form>
</div>
Try this:
In html,
<ul class="list-group">
<li ng-repeat="loc in locals" class="list-group-item">
<a href="" data-id={{loc.ID}} ng-click="selectLoc(loc.location)">
{{loc.location}}
</a>
</li>
</ul>
In JS,
$scope.selectLoc = function(location){
console.log(location);
//Here you will get the selected location.
var SomeVar = location;
}
Hope this helps....
I'm trying to filter a list of items (grabbed from JSON) onclick. I pull the data once from the server then would like to filter/order the elements using Angular.
Here is my plunker: http://plnkr.co/edit/glSz1qytmdZ9BQfGbmVo?p=preview
Tabs -- How could I filter/sort the items onclick? "Recent" would be sorted by date and "Popular" would be sorted by views.
Categories -- I'm using ng-click to grab the category value although not sure how to update the filter dynamically (using the value passed onclick).
Thanks
I would wrap the entire functionality inside a parent controller with the tab change and category select functions inside that parent controller (the child scopes will inherit this) so that the scope variables can be shared down for the filters and order By:
Reading Materials on Controller Inheritance: http://docs.angularjs.org/guide/dev_guide.mvc.understanding_controller
Demo: http://plnkr.co/edit/rh3wGYhuoHSHJEa4PoQi?p=preview
HTML:
<div ng-controller="ListController">
<div class="categories" ng-controller="CategoryController">
<ul ng-repeat="category in categories">
<li ng-click="sendCategory(category)">{{category.name}}</li>
</ul>
</div>
<div class="tabs" ng-controller="tabsController">
<ul>
<li ng-click="tab(1)">Recent items</li>
<li ng-click="tab(2)">Popular items</li>
</ul>
</div>
<div class="container">
<div class="left" ng-controller="ItemController">
<div class="itemList">
<div class="item" ng-repeat="item in items | filter:search | orderBy:sort">
<h3 ng-click="viewDetail(item)">{{item.title}} - {{item.date}}</h3>
<p>{{item.description}}</p>
<a ng-click="viewDetail(item)">View full item details</a>
</div>
</div>
</div>
</div>
</div>
Here is the parent controller:
myApp.controller('ListController', function($scope, $route, $location, $http, Categories){
$scope.sort = function(item) {
if ( $scope.orderProp == 'date') {
return new Date(item.date);
}
return item[$scope.orderProp];
}
$scope.sendCategory = function(category) {
// How can I pass this value to ItemController?
$scope.search =category.name;
};
$scope.orderProp='date';
$scope.tab = function (tabIndex) {
//Sort by date
if (tabIndex == 1){
//alert(tabIndex);
$scope.orderProp='date';
}
//Sort by views
if (tabIndex == 2){
$scope.orderProp = 'views';
}
};
})
** Update **
I've updated the controller to sort the dates correctly since they need to be parsed first.