I am new to angularjs. I am trying a simple program which have check boxes and a disabled button. The button should be enabled after one or multiple checkboxes are selected. However, my solution seems to be not working. Any help in this respect will be great.
HTML code:
<html ng-app="Apps" ng-controller = "chk">
<head>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.6/angular.min.js"></script>
<script type="text/javascript" src="Apps.js"></script>
</head>
<body>
<center>
<h1> Fruits </h1>
<hr/>
<div >
<label ng-repeat="lbl in lbls">
<input type="checkbox" ng-model="chkd" > {{lbl}}
</label>
<br>
<input type="button" value="Submit" ng-disabled="!chkd"/>
</div>
</center>
</body>
</html>
here is the JS is file:
var Apps = angular.module ('Apps', [])
Apps.controller("chk", function($scope){
$scope.lbls = [
'Apples',
'Bananas',
'Apricots',
'Peaches'
];
});
It looks like you have to have separate conditions for each of the checkboxes for ng-disabled to detect a change. Use this HTML layout instead:
<html>
<head>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.6/angular.min.js">
</script>
</head>
<body>
<center>
<h1> Fruits </h1>
<hr/>
<div ng-app>
<input type="checkbox" ng-model="cb01"> Apples
<input type="checkbox" ng-model="cb02"> Bananas
<input type="checkbox" ng-model="cb03"> Apricots
<input type="checkbox" ng-model="cb04"> Peaches
<br>
<input type="button" value="Submit" ng-disabled="!(cb01||cb02||cb03||cb04)">
</div>
</center>
</body>
</html>
jsfiddle
EDIT
Code should now be working fine. Sorry for the confusion!
Here is an approach which you can insert other fruits, and don't need to change code in your ng-disabled:
var Apps = angular.module ('Apps', [])
Apps.controller("chk", function($scope){
$scope.chkd = {
Apples: false,
Bananas: false,
Apricots: false,
Peaches: false
};
$scope.enableSubmit = function(){
var atLeastOneSelected = [];
for (var fruit in $scope.chkd) {
if($scope.chkd[fruit] === true){
atLeastOneSelected.push(fruit);
}
}
return !(atLeastOneSelected.length > 0);
}
});
<html ng-app="Apps" ng-controller = "chk">
<head>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.6/angular.min.js"></script>
<script type="text/javascript" src="Apps.js"></script>
</head>
<body>
<center>
<h1> Fruits </h1>
<hr/>
<div >
<label ng-repeat="(lbl, enabled) in chkd">
<input type="checkbox" ng-model="chkd[lbl]"> {{lbl}}
</label>
<br>
<input type="button" value="Submit" ng-disabled="enableSubmit()"/>
</div>
</center>
</body>
</html>
Related
I am getting back into javascript for a job I am going to start soon. for some reason i forgot how to do a simple calculator. I dont understand why my even onclick is null when it is a button. I am sure this is a very simple answer I just cant see it.
if(document.getElementById("add").onclick == true){
alert("hey");}
<!DOCTYPE html>
<html>
<head>
<title>TEST</title>
<script src= "script.js"> </script>
</head>
<body>
<h3> Calculator: </h3>
<input type="text" name="a">
<input type="text" name="b">
<input type="button" value="+" name="add">
</body>
</html>
To get you started I made minor changes to your code, go through the changes and understand the use of each change.
function sum(){
var a = document.getElementById("a");
var b = document.getElementById("b");
alert(Number(a.value) + Number(b.value));
}
<!DOCTYPE html>
<html>
<head>
<title>TEST</title>
<script src= "script.js"> </script>
</head>
<body>
<h3> Calculator: </h3>
<input type="text" name="a" id="a">
<input type="text" name="b" id="b">
<input type="button" onClick="sum()" value="+" name="add">
</body>
</html>
I'm doing an simple app-ToDoList with login page.the second page have a controller that update dynamically the content of my ToDoList, unfortunately when I launch my application the controller not update the page...there someone that could advice me what's wrong? maybe I'm missing something..
here the application with the code :
http://plnkr.co/edit/IIYlc1RbEeW8mn9L6YVL?p=preview
This is the page where load the contents.
<html ng-app="toDoApp" ng-controller="toDoController">
<head>
<title>Tasks App</title>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.28/angular.min.js"></script>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.28//angular-route.min.js"></script>
<script src="app.js" type="text/javascript"></script>
<script src="ToDocontroller.js" type="text/javascript"></script>
</head>
<body>
<h1>My To-do List</h1>
<h2>Tasks</h2>
<table>
<tr><td>
<h3>Active ({{ tasks.length }})</h3>
<span ng-hide="tasks.length">You have no active tasks!</span>
<div ng-repeat="task in tasks">
<input type="checkbox" ng-click="transferTo($index, tasks, completed)" /> {{ task }}<br />
</div>
</td><td>
<div ng-show="completed.length">
<h3>Completed ({{ completed.length }})</h3>
<div ng-repeat="task in completed">
<input type="checkbox" ng-click="transferTo($index, completed, tasks)" checked /> <span class="complete">{{ task }}</span><br />
</div>
</div>
</td></tr>
</table>
<h2>Add a Task</h2>
<form ng-submit="addTask()">
<input type="text" placeholder="Description" ng-model="newTaskName" />
<input type="submit" value="Add" />
</form>
</body>
</html>
Here my controller
angular.module('toDoApp', [])
.controller('toDoController', ['$scope', function($scope) { alert('1');
$scope.tasks = ['Do the laundry'];
$scope.completed = [];alert('1');
$scope.newTaskName = '';
alert('2');
$scope.addTask = function() {
var name = $scope.newTaskName;
if (name && $scope.tasks.indexOf(name) == -1
&& $scope.completed.indexOf(name)) {
$scope.tasks.push(name);
$scope.newTaskName = '';
}
};
$scope.transferTo = function(index, start, end) {
end.push(start[index]);
start.splice(index, 1);
}
}]);
tnx in advance
So many mistakes. This is just sample. You should use $route (ng-view or ui-view) for route navigation.. I was updated plnkr.
http://embed.plnkr.co/C1ubxufRQHN4rfGooxeF/
This is a problem that can be easily done by declaring a scope function but I was wondering if there is a better way to make this easier
The code is:
<!DOCTYPE html>
<html ng-app="myApp">
<head>
<link rel="stylesheet" type="text/css" href="http://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.9/angular.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.2/jquery.min.js"></script>
</head>
<body ng-controller="myCtrl">
<input type="checkbox" ng-model="activate" id="activate"> ACTIVATE <br />
<input type="text" ng-model="first" ng-disabled="!activate">
<input type="text" ng-model="second" ng-disabled="!activate">
<!-- <span id="clickMe">Click Me!</span> -->
<script type="text/javascript">
app = angular.module('myApp', []);
app.controller('myCtrl', function($scope, $timeout){
});
</script>
</body>
</html>
So this is the case. The other two fields will be enabled if the checkbox is checked and true and will be disabled if the checkbox is unchecked. What I want is, to make the fields go null or blank automatically upon disabling.
Here is an example: http://plnkr.co/edit/2EPuhRiR9OncV8z7q018?p=preview
Ignoring the fact that it is not a good practice to put too much logic directly in the view, a technical solution would be:
<input type="checkbox" ng-model="activate" id="activate" ng-change="sameAsAbove(first, second); value = null"> ACTIVATE <br />
<input type="text" ng-model="value.first" ng-disabled="!activate">
<input type="text" ng-model="value.second" ng-disabled="!activate">
I am trying to highlight an input field in my form when a particular radio buttons is selected. While I have accomplished this, I do not understand why my particular solution works.
Here is the HTML:
<!DOCTYPE html>
<html lang="en">
<head>
<script type="text/javascript" src="https://ajax.microsoft.com/ajax/jQuery/jquery-1.4.2.min.js"></script>
<meta charset="UTF-8">
<script type="text/javascript" src="script.js"></script>
<title>Testing jQuery on Forms</title>
</head>
<body>
<div id="form">
<h3>The form</h3>
<form name="main_form">
<fieldset style="width: 300px;">
<legend>General Information</legend>
<p>Do you have a name?</p>
<input style="float: left" name="name_or" id="name_or_yes" type="radio" value="yes">
<legend for="name_or_yes">Yes</legend>
<input style="float: left" name="name_or" id="name_or_no" type="radio" value="no" checked="checked">
<legend for="name_or_no">No</legend>
<br/>
Name: <input type="text" name="name" id="#name_field">
</fieldset>
</form>
<button id="submit_form">Submit</button>
</div>
<div id="results"></div>
</body>
</html>
Here is the JS:
$(document).ready(function() {
$('#name_or_yes').click(function() {
$('input[name=name]').focus();
});
$('#submit_form').click(function() {
var toAdd = $("input[name=name]").val();
$('#results').append("<p>"+toAdd+"</p>");
});
});
I don't understand why focus() does not work on the name input field when I use it's id (#name_field'). It only works when i use the input[name=name] method. This is doubly confusing because the following works perfectly well:
<html>
<head>
<script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>
<script>
$(document).ready(function(){
$("#txtfocus").focus();
});
</script>
</head>
<body>
<input type="text" id="txtfocus2"><br/>
This text box is set focused: <input type="text" id="txtfocus">
</body>
</html>
Any help or advice is appreciated!
Look at the id here:
<input type="text" name="name" id="#name_field">
Try it like this:
<input type="text" name="name" id="name_field">
The # is the id selector, but should not appear in the HTML.
Thank you both!
These are the kind of mistakes which happen when you spend too much time looking at the same piece of code!
I would like to upvote you however, I do not have sufficient reputation points to do so. :(
input's ID should be "name_field" instead of "#name_field":
<input type="text" name="name" id="name_field">
I have two html pages named order.html,check.html and test.js(included in both html files)
When i click on submit button in order.html,amount field value from order.html should get updated/populate into cost field of check.html.
Below is the code i am using but its not working,can someone let me know whats wrong??
order.html
<html>
<head>
<script language="javascript" type="text/javascript" src="test.js"></script>
</head>
<body>
<form name="order" action="check.html" method="get">
name:<input type ="text" id="amount" name="amount">
<input type="submit" value="finish" onclick="cost()" >
</form>
</body>
</html>
check.html
<head>
<script language="javascript" type="text/javascript" src="test.js"></script>
</head>
<body>
<form name="check" action="confirm.html" method="get">
<input type="text" name="cost" id="cost" readonly="readonly">
</form>
</body>
</html>
test.js
function cost(){
var amount= $("#amount").val();
jQuery.load("check.html",function(){
$("#cost").html(amount);
});
}
Your order.html input type submit should be input type button.
Change your test.js to
function cost(){
var amount= $("#amount").val();
$('body').load("check.html",function(){
$("#cost").val(amount);
});
}
And input type="button"
Try this:
order.html:
<html>
<head>
<script language="javascript" type="text/javascript" src="test.js"></script>
</head>
<body>
<div id="main_div">
<form name="order" action="check.html" method="get">
name:<input type="text" id="amount" name="amount"> <input
type="button" value="finish" id="submit_btn">
</form>
</div>
</body>
</html>
Jquery:
$(document).ready(function() {
$('#submit_btn').click(function() {
var amount = $("#amount").val();
$('#main_div').load("check.html", function() {
$('#main_div').find("#cost").val(amount);
});
});
});