I am newbie to AngularJs. I need to create set of div blocks (given as code) on button click.
<div>
<div>Div A</div>
<div>Div B</div>
<div>Div C</div>
</div>
I have done this using hard coded divs Demo. But I just need to use ng-repeat and directives. Any help will be appreciated.
Using ng-click is the way to go for binding the click event to your button. You should not be trying to handle button clicks with a directive. The demo you have is very close to what you need. There is a working Plunk HERE, but the general guts of it follow:
<button ng-click="myFunction()">Add</button>
<div ng-repeat="item in myList">
<div>{{item.A}}</div>
<div>{{item.B}}</div>
<div>{{item.C}}</div>
</div>
$scope.myList = [];
$scope.myFunction = function(){
var myItem = {A:someValue, B:someOther, C:someThing};
$scope.myList.push(myItem);
};
The divs that hold the items could also make use of directives to change them somehow, but that is quite a bit more code. There are plenty of SO answers and Angular documentation that show you how to write directives, so I won't repeat them here.
Related
I am working on an app that submits the form and get the result from the server which followed by HTML table view. My input form is a bit big which covers whole the screen. When the table comes then I want automatically scroll down at the table view. I used $anchorScroll from angularJs. But I am not able to achieve the result what I want. I also used $timeout to make sure the table is already exist or not and then perform $anchorScroll, but still no success. (based on this solution : Using $location and $anchorScroll to scroll a table row into view
Hear is my code.
HTML
<div data-ng-controller="searchController as searchCtrl" id="scrollArea">
<form>
//HTML input elements
<div class="buttons">
<md-button class="md-primary md-raised" ng-click="searchCtrl.gotoTable('resultTable')">Start</md-button>
</div>
</form>
</div>
<!-- Smart Table for displaying result -->
<div class="rtable" ng-show = "searchCtrl.tableViewData.length > 0" id="resultTable">
//table content
</div>
Controller
angular.module('myApp')
.controller("searchController", function($log, searchService, $scope, $location, $anchorScroll, $timeout){
var self = this;
self.gotoTable = function(resultTable)
{
$timeout(function() {
$location.hash(resultTable);
$anchorScroll();
});
};
});
I dont know why its not working?
Do i need to define the id scrollArea and resultTable in my CSS?
Any help would be appreciated.
Thanks in advance.
UPDATE
Based on Okazari's solution, I tried to put a another div with many br tag above at the very bottom of my HTML. Now When I refresh the page then it automatically scroll to that div tag without clicking Start. this is a bit weird. I also tried to cover the
<div class="rtable" ng-show = "searchCtrl.tableViewData.length > 0" id="resultTable">
tag with another div tag with id = "resultTable".
But still it did not work.
You actually are invoking your function without any parameters
ng-click="searchCtrl.gotoTable()"
whereas in your controller you expect to have one :
self.gotoTable = function(resultTable)
Try something like this
ng-click="searchCtrl.gotoTable('resultTable')"
or this :
self.gotoTable = function()
{
$timeout(function() {
$location.hash("resultTable");
$anchorScroll();
});
};
(just one, not both)
Hope it helped.
EDIT : Pretty sure that you can't go to a hidden div. As i said in comment your ng-show may be evaluated to true when you try to anchorscroll().
Here is a working plunker without ng-show. I'll build a tiny solution to avoid the ng-show issue.
To avoid this side effect, i wrapped the div with ng-show with another div.
<div id="resultTable">
<div class="rtable" ng-show = "searchCtrl.tableViewData.length > 0">
</div>
I would like to add an iframe to a page when certain links are clicked and remove it when other mouse events happen on the page. From what I can see, it seems that using an AngularJS directive would be the best way to do this. What I'm not sure about is what is the best way to format the directive. I'm thinking of making the directive at the attribute level...something like this:
<div myIframeDirective></div>
What I'm not sure of is the best way of removing/adding the directive contents (an iframe and a header above it) when various click events happen on the main page. Not looking for anyone to write the code for me...just looking for examples of how this can be best accomplished.
You should be using ng-if.
<iframe src="http://www.example.com/" ng-if="showIframe"></iframe>
<button ng-click="showIframe = !showIframe">Click me to show/hide the iframe</button>
Here's a working example:
var app = angular.module('app', []);
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="app">
<iframe src="http://www.example.com/" ng-if="showIframe"></iframe>
<button ng-click="showIframe = !showIframe">Click me to show/hide the iframe</button>
</div>
In Angular, ng-if will remove the iframe from the DOM if it is false.
This means the URL will NOT be requested until ng-if is true.
<iframe ng-if="frameDisplayed" ng-src="{{src}}"></iframe>
And use the link
Toggle
Then in your controller, you can control what your iframe display:
$scope.src = 'https://angularjs.org';
I am working on a website that displays numerous articles. Each article has a comment section. I have effectively been able to recursively write the comments to the DOM with recursion inside an ng-repeat. However, I need to be able to click on a respond button on any of the comments (they display in a nested fashion) and for a div to be inserted beneath the clicked button. This div would contain a text area for the comment they want to submit and a button. When this second button is clicked, the controller will save the comment to the database. I initially wanted to do this by directly manipulating the DOM from the controller. However, after further research, that would be in direct violation of the MVC/MVW pattern. I believe the correct answer is to create a custom directive. Please give me some insight on how to correctly do this. Any and all information would be very helpful. Thanks in advance.
If you want to add response div dinamically:
<div ng-repeat="article in articles" id="article-{{$index}}">
<p>{{article.content}}</p>
<button ng-click="addAnswer($index)">Add Answer</button>
</div>
js:
myApp.controller("articlesController", function($compile){
$scope.addAnswer = function (index) {
var div = $("<div></div>");
var input = $("<input type='text' ng-model='article.response'></input>");
div.append(input);
var button = $("<button>Send</button>");
button.attr("ng-click", "sendResponse(article)");
$compile(div)($scope);
$("#article-" + index).append(div);
};
});
You don't really need to make a directive to achieve this.
html:
<div ng-repeat="article in articles">
<p>{{article.content}}</p>
<input type="text" ng-model="article.response"></input>
<button ng-click="sendResponse(article)">Send</button>
</div>
js:
myApp.controller("articlesController", function($http){
$scope.sendResponse = function (article) {
console.log(article.response);
$http.post(url, article);
};
});
Of course, you can do it better by hidding input and send button, and show it after user clicks over an answer button.
How do I go about create an element in my controller? e.g. on a click event?
example controller:
function AddCtrl($scope){
$scope.add = function(){
// do stuff to create a new element?
}
}
example view:
<div ng-controller="AddCtrl">
<button ng-click="add()">Add</button>
// create <input type="text" ng-model="form.anotherField">
</div>
Any suggestions much appreciated.
AngularJS is intended to follow MVC - so the controller creating an element in the view doesn't agree with the MVC behavior. The controller should not know about the view.
It sounds as if you want to have a control appear based on some conditional logic. One approach would be to bind to the visibility of the element.
In Angular, your controllers should not be manipulating the DOM directly. Instead, you should describe the elements you need in your templates, and then control their display with directives, like ng-switch, ng-hide / ng-show, or ng-if, based on your model, ie, your data.
For example in your controller you might do something like:
$scope.showForm = false;
And then in your partial:
<div id="myForm" ng-show="showForm">
<!-- Form goes here -->
</div>
By switching $scope.showForm between true and false, you will see your myForm div appear and disappear.
This is a classical mistake coming from jQuery moving to Angular or any other MVC library. The way you should think is to let the view react to changes in the scope.
$scope.items = []
$scope.add = function(){
$scope.items.push({});
}
In the view:
<input type="text" ng-repeat="item in items" ng-model="item.property">
If you want to display an element based on some condition or after the click, use ng-switch: http://docs.angularjs.org/api/ng/directive/ngSwitch
If you want to add multiple elements, create a repeated list of items and add an item to your view-model on clicking the button:
$scope.yourlistofitems = [];
$scope.add = function() {
$scope.yourlistofitems.push("newitemid");
}
And in the HTML:
<input type="text" ng-repeat="item in yourlistofitems" ng-model="item.property">
I think some sample code can explain my purpose.
Some html code with angular:
<div ng-init="buttons=['add','edit','delete']">
<div show-result-as-text>
<button ng-repeat="button in buttons">{{button}}</button>
</div>
</div>
You can see there is a custom directive "show-result-as-text" which I want to define. It should render the inner html code with angular directives, then show them as text.
The final html should be:
<div ng-init="buttons=['add','edit','delete']">
<div show-result-as-text>
<button>add</button>
<button>edit</button>
<button>delete</button>
</div>
</div>
And when the buttons value changes, the escaped html should also be changed.
I've tried to write one myself, but failed after 2 hours of work.
UPDATE
A live demo: http://plnkr.co/edit/fpqeTJefd6ZwVFEbB1cw
The closest thing I could think of is exemplified here: http://jsfiddle.net/bmleite/5tRzM/
Basically it consists in hiding the src element and append a new element that will contain the outerHTML of each src child.
Note: I don't like the solution but it works, so I decided to share it...