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How to trigger selection of an option using Jquery [duplicate]

I am using Angular JS and I need to set a selected option of a dropdown list control using angular JS. Forgive me if this is ridiculous but I am new with Angular JS
Here is the dropdown list control of my html
<select ng-required="item.id==8 && item.quantity > 0" name="posterVariants"
ng-show="item.id==8" ng-model="item.selectedVariant"
ng-change="calculateServicesSubTotal(item)"
ng-options="v.name for v in variants | filter:{type:2}">
</select>
After it gets populated I get
<select ng-options="v.name for v in variants | filter:{type:2}" ng-change="calculateServicesSubTotal(item)"
ng-model="item.selectedVariant" ng-show="item.id==8" name="posterVariants"
ng-required="item.id==8 && item.quantity > 0" class="ng-pristine ng-valid ng-valid-required">
<option value="?" selected="selected"></option>
<option value="0">set of 6 traits</option>
<option value="1">5 complete sets</option>
</select>
How can I set the control for value="0" to be selected?

I hope I understand your question, but the ng-model directive creates a two-way binding between the selected item in the control and the value of item.selectedVariant. This means that changing item.selectedVariant in JavaScript, or changing the value in the control, updates the other. If item.selectedVariant has a value of 0, that item should get selected.
If variants is an array of objects, item.selectedVariant must be set to one of those objects. I do not know which information you have in your scope, but here's an example:
JS:
$scope.options = [{ name: "a", id: 1 }, { name: "b", id: 2 }];
$scope.selectedOption = $scope.options[1];
HTML:
<select data-ng-options="o.name for o in options" data-ng-model="selectedOption"></select>
This would leave the "b" item to be selected.

I don't know if this will help anyone or not but as I was facing the same issue I thought of sharing how I got the solution.
You can use track by attribute in your ng-options.
Assume that you have:
variants:[{'id':0, name:'set of 6 traits'}, {'id':1, name:'5 complete sets'}]
You can mention your ng-options as:
ng-options="v.name for v in variants track by v.id"
Hope this helps someone in future.

If you assign value 0 to item.selectedVariant it should be selected automatically.
Check out sample on http://docs.angularjs.org/api/ng.directive:select which selects red color by default by simply assigning $scope.color='red'.

i see here already wrote good answers, but sometime to write the same in other form can be helpful
<div ng-app ng-controller="MyCtrl">
<select ng-model="referral.organization" ng-options="c for c in organizations"></select>
</div>
<script type='text/javascript'>
function MyCtrl($scope) {
$scope.organizations = ['a', 'b', 'c', 'd', 'e'];
$scope.referral = {
organization: $scope.organizations[2]
};
}
</script>

Simple way
If you have a Users as response or a Array/JSON you defined, First You need to set the selected value in controller, then you put the same model name in html. This example i wrote to explain in easiest way.
Simple example
Inside Controller:
$scope.Users = ["Suresh","Mahesh","Ramesh"];
$scope.selectedUser = $scope.Users[0];
Your HTML
<select data-ng-options="usr for usr in Users" data-ng-model="selectedUser">
</select>
complex example
Inside Controller:
$scope.JSON = {
"ResponseObject":
[{
"Name": "Suresh",
"userID": 1
},
{
"Name": "Mahesh",
"userID": 2
}]
};
$scope.selectedUser = $scope.JSON.ResponseObject[0];
Your HTML
<select data-ng-options="usr.Name for usr in JSON.ResponseObject" data-ng-model="selectedUser"></select>
<h3>You selected: {{selectedUser.Name}}</h3>

It can be usefull. Bindings dose not always work.
<select id="product" class="form-control" name="product" required
ng-model="issue.productId"
ng-change="getProductVersions()"
ng-options="p.id as p.shortName for p in products">
</select>
For example. You fill options list source model from rest-service. Selected value was known befor filling list and was set. After executing rest-request with $http list option be done. But selected option is not set. By unknown reasons AngularJS in shadow $digest executing not bind selected as it shuold be. I gotta use JQuery to set selected. It`s important! Angular in shadow add prefix to value of attr "value" for generated by ng-repeat optinos. For int it is "number:".
$scope.issue.productId = productId;
function activate() {
$http.get('/product/list')
.then(function (response) {
$scope.products = response.data;
if (productId) {
console.log("" + $("#product option").length);//for clarity
$timeout(function () {
console.log("" + $("#product option").length);//for clarity
$('#product').val('number:'+productId);
//$scope.issue.productId = productId;//not work at all
}, 200);
}
});
}

Try the following:
JS file
this.options = {
languages: [{language: 'English', lg:'en'}, {language:'German', lg:'de'}]
};
console.log(signinDetails.language);
HTML file
<div class="form-group col-sm-6">
<label>Preferred language</label>
<select class="form-control" name="right" ng-model="signinDetails.language" ng-init="signinDetails.language = options.languages[0]" ng-options="l as l.language for l in options.languages"><option></option>
</select>
</div>

This is the code what I used for the set selected value
countryList: any = [{ "value": "AF", "group": "A", "text": "Afghanistan"}, { "value": "AL", "group": "A", "text": "Albania"}, { "value": "DZ", "group": "A", "text": "Algeria"}, { "value": "AD", "group": "A", "text": "Andorra"}, { "value": "AO", "group": "A", "text": "Angola"}, { "value": "AR", "group": "A", "text": "Argentina"}, { "value": "AM", "group": "A", "text": "Armenia"}, { "value": "AW", "group": "A", "text": "Aruba"}, { "value": "AU", "group": "A", "text": "Australia"}, { "value": "AT", "group": "A", "text": "Austria"}, { "value": "AZ", "group": "A", "text": "Azerbaijan"}];
for (var j = 0; j < countryList.length; j++) {
//debugger
if (countryList[j].text == "Australia") {
console.log(countryList[j].text);
countryList[j].isSelected = 'selected';
}
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.7.5/angular.min.js"></script>
<label>Country</label>
<select class="custom-select col-12" id="Country" name="Country" >
<option value="0" selected>Choose...</option>
<option *ngFor="let country of countryList" value="{{country.text}}" selected="{{country.isSelected}}" > {{country.text}}</option>
</select>
try this on an angular framework

JS:
$scope.options = [
{
name: "a",
id: 1
},
{
name: "b",
id: 2
}
];
$scope.selectedOption = $scope.options[1];

Stepping through JSON object with Angular

I have a JSON object that I need to be able to step through each object in the array. I'm currently able to show all items, but need to be able to only show the first one on load. On button click, it needs to iterate to the next object in the array, and display only the next object, so on and so forth.
As an example of this functionality: http://jsbin.com/veyegihogi/edit?html,js,output
The current setup:
JavaScript:
var app = angular.module('app', []);
app.controller('portfolioController', function($scope, $http) {
$scope.indexToShow = 0;
$http.get("shows.json")
.then(function(response) {
console.log(response);
$scope.results = response.data;
});
$scope.change = function(){
$scope.indexToShow = ($scope.indexToShow + 1) % $scope.results.length;
};
});
Markup:
<div id="images" ng-repeat="items in results">
<div class="col-lg-2 col-md-2 col-sm-2">
<img src="{{items.image_url}}" alt="{{items.title}}">
</div>
</div>
<div class="simple-button" ng-click="change()">click me!</div>
Sample data:
[
{
"id": 1,
"title": "title 1",
"count": 14,
"image_url": "images/image.jpg"
},
{
"id": 2,
"title": "title 2",
"count": 10,
"image_url": "images/image2.jpg"
},
{
"id": 3,
"title": "title 3",
"count": 8,
"image_url": "images/image3.jpg"
}
]

If you want to stick with your jsbin...
<div id="images" ng-repeat="item in results track by $index" ng-show="$index == indexToShow">
<div class="col-lg-2 col-md-2 col-sm-2">
<img src="{{item.image_url}}" alt="{{item.title}}">
</div>
</div>
<div class="simple-button" ng-click="change()">click me!</div>

You have all the code ready for this ;)
You just want this view part instead of your ng-repeat
<div id="images">
<img src="{{results[indexToShow].image_url}}" alt="{{results[indexToShow].title}}">
</div>
<div class="simple-button" ng-click="change()">click me!</div>

Can set a scope variable for selectedItem and do the indexing in controller
$scope.results = response.data;
$scope.selectedItem = $scope.results[0];
$scope.change = function(){
var currIdx = $scope.results.indexOf($scope.selectedItem),
nextIdx = currIdx+1 <= $scope.results.length-1 ? currIdx+1 : 0;
$scope.selectedItem=$scope.results[nextIdx ];
};
View
<img src="{{selectedItem.product_image_url}}"...>
To create pager buttons set selected item in ng-click or pass item to a function and set it in controller:
<span ng-repeat="item in results"
ng-class="{active: item == selectedItem}}"
ng-click="selectedItem = item">{{$index+1}}</span>

angularjs: ng-model double object

I try to achieve a double nested object. (Example Below)
The Problem is that my current Code is generating a Array inside a Object.
<div ng-if="newResultUnits()" ng-repeat="set in sets" ng-model="newexercise.sets[$index]">
<label>Set {{$index+1}}</label>
<label>
<label>
<input type="text" ng-repeat="resultUnit in newResultUnits()" ng-model="newexercise.sets[$parent.$index][$index].value" placeholder="{{resultUnit.name}}">
</label>
</label>
</div>
Example (the name attr is added later):
{
name:"MultiTest",
sets:[
{
0:{
value:"10",
name:"Kg"
},
1:{
value:"10",
name:"Wdh"
}
}
]
}
This is how it should be: (Please note the doubble [[ and the missing 0:)
{
"name": "MultiTest",
"sets": [
[
{
"value": "10",
"name": "Kg"
},
{
"value": "10",
"name": "Wdh"
}
]
]
}
Im sorry if I mixedup Array and Object.. Thanks!

You need properly initialize your data structures. So in controller begin with
$scope.newexercise = { sets: [] };
So Angular knows that you want $scope.newexercise to be an array. Then in template use ngInit on every inner loop ng-init="newexercise.sets[$parent.$index] = []":
<div ng-repeat="set in sets">
<label>Set {{$index+1}}</label>
<label>
<label>
<input type="text"
ng-repeat="resultUnit in newResultUnits()"
ng-init="newexercise.sets[$parent.$index] = []"
ng-model="newexercise.sets[$parent.$index][$index].value"
placeholder="{{resultUnit.name}}">
</label>
</label>
</div>
Demo: http://plnkr.co/edit/s1rInT8rLg50ISsSVxyV?p=preview

"selected" attribute on select option being ignored [duplicate]

I am using Angular JS and I need to set a selected option of a dropdown list control using angular JS. Forgive me if this is ridiculous but I am new with Angular JS
Here is the dropdown list control of my html
<select ng-required="item.id==8 && item.quantity > 0" name="posterVariants"
ng-show="item.id==8" ng-model="item.selectedVariant"
ng-change="calculateServicesSubTotal(item)"
ng-options="v.name for v in variants | filter:{type:2}">
</select>
After it gets populated I get
<select ng-options="v.name for v in variants | filter:{type:2}" ng-change="calculateServicesSubTotal(item)"
ng-model="item.selectedVariant" ng-show="item.id==8" name="posterVariants"
ng-required="item.id==8 && item.quantity > 0" class="ng-pristine ng-valid ng-valid-required">
<option value="?" selected="selected"></option>
<option value="0">set of 6 traits</option>
<option value="1">5 complete sets</option>
</select>
How can I set the control for value="0" to be selected?

I hope I understand your question, but the ng-model directive creates a two-way binding between the selected item in the control and the value of item.selectedVariant. This means that changing item.selectedVariant in JavaScript, or changing the value in the control, updates the other. If item.selectedVariant has a value of 0, that item should get selected.
If variants is an array of objects, item.selectedVariant must be set to one of those objects. I do not know which information you have in your scope, but here's an example:
JS:
$scope.options = [{ name: "a", id: 1 }, { name: "b", id: 2 }];
$scope.selectedOption = $scope.options[1];
HTML:
<select data-ng-options="o.name for o in options" data-ng-model="selectedOption"></select>
This would leave the "b" item to be selected.

I don't know if this will help anyone or not but as I was facing the same issue I thought of sharing how I got the solution.
You can use track by attribute in your ng-options.
Assume that you have:
variants:[{'id':0, name:'set of 6 traits'}, {'id':1, name:'5 complete sets'}]
You can mention your ng-options as:
ng-options="v.name for v in variants track by v.id"
Hope this helps someone in future.

If you assign value 0 to item.selectedVariant it should be selected automatically.
Check out sample on http://docs.angularjs.org/api/ng.directive:select which selects red color by default by simply assigning $scope.color='red'.

i see here already wrote good answers, but sometime to write the same in other form can be helpful
<div ng-app ng-controller="MyCtrl">
<select ng-model="referral.organization" ng-options="c for c in organizations"></select>
</div>
<script type='text/javascript'>
function MyCtrl($scope) {
$scope.organizations = ['a', 'b', 'c', 'd', 'e'];
$scope.referral = {
organization: $scope.organizations[2]
};
}
</script>

Simple way
If you have a Users as response or a Array/JSON you defined, First You need to set the selected value in controller, then you put the same model name in html. This example i wrote to explain in easiest way.
Simple example
Inside Controller:
$scope.Users = ["Suresh","Mahesh","Ramesh"];
$scope.selectedUser = $scope.Users[0];
Your HTML
<select data-ng-options="usr for usr in Users" data-ng-model="selectedUser">
</select>
complex example
Inside Controller:
$scope.JSON = {
"ResponseObject":
[{
"Name": "Suresh",
"userID": 1
},
{
"Name": "Mahesh",
"userID": 2
}]
};
$scope.selectedUser = $scope.JSON.ResponseObject[0];
Your HTML
<select data-ng-options="usr.Name for usr in JSON.ResponseObject" data-ng-model="selectedUser"></select>
<h3>You selected: {{selectedUser.Name}}</h3>

It can be usefull. Bindings dose not always work.
<select id="product" class="form-control" name="product" required
ng-model="issue.productId"
ng-change="getProductVersions()"
ng-options="p.id as p.shortName for p in products">
</select>
For example. You fill options list source model from rest-service. Selected value was known befor filling list and was set. After executing rest-request with $http list option be done. But selected option is not set. By unknown reasons AngularJS in shadow $digest executing not bind selected as it shuold be. I gotta use JQuery to set selected. It`s important! Angular in shadow add prefix to value of attr "value" for generated by ng-repeat optinos. For int it is "number:".
$scope.issue.productId = productId;
function activate() {
$http.get('/product/list')
.then(function (response) {
$scope.products = response.data;
if (productId) {
console.log("" + $("#product option").length);//for clarity
$timeout(function () {
console.log("" + $("#product option").length);//for clarity
$('#product').val('number:'+productId);
//$scope.issue.productId = productId;//not work at all
}, 200);
}
});
}

Try the following:
JS file
this.options = {
languages: [{language: 'English', lg:'en'}, {language:'German', lg:'de'}]
};
console.log(signinDetails.language);
HTML file
<div class="form-group col-sm-6">
<label>Preferred language</label>
<select class="form-control" name="right" ng-model="signinDetails.language" ng-init="signinDetails.language = options.languages[0]" ng-options="l as l.language for l in options.languages"><option></option>
</select>
</div>

This is the code what I used for the set selected value
countryList: any = [{ "value": "AF", "group": "A", "text": "Afghanistan"}, { "value": "AL", "group": "A", "text": "Albania"}, { "value": "DZ", "group": "A", "text": "Algeria"}, { "value": "AD", "group": "A", "text": "Andorra"}, { "value": "AO", "group": "A", "text": "Angola"}, { "value": "AR", "group": "A", "text": "Argentina"}, { "value": "AM", "group": "A", "text": "Armenia"}, { "value": "AW", "group": "A", "text": "Aruba"}, { "value": "AU", "group": "A", "text": "Australia"}, { "value": "AT", "group": "A", "text": "Austria"}, { "value": "AZ", "group": "A", "text": "Azerbaijan"}];
for (var j = 0; j < countryList.length; j++) {
//debugger
if (countryList[j].text == "Australia") {
console.log(countryList[j].text);
countryList[j].isSelected = 'selected';
}
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.7.5/angular.min.js"></script>
<label>Country</label>
<select class="custom-select col-12" id="Country" name="Country" >
<option value="0" selected>Choose...</option>
<option *ngFor="let country of countryList" value="{{country.text}}" selected="{{country.isSelected}}" > {{country.text}}</option>
</select>
try this on an angular framework

JS:
$scope.options = [
{
name: "a",
id: 1
},
{
name: "b",
id: 2
}
];
$scope.selectedOption = $scope.options[1];

Update json file based on input values using AngularJS

I've written the following code to read data from json file and draw a graph. now I want to get the data from user through input fields and update the json with new values. I wrote the code to copy the value and made it accessible outside the scope, I just wonder how to update the existent json with the new values.
json looks like this:
{
"nodes" : [
{ "id": 1, "label": "End Product", "level": 0 },
{ "id": 2, "label": "A 1", "level": 1 },
{ "id": 3, "label": "A 2", "level": 1 },
{ "id": 4, "label": "A 3", "level": 1 },
{ "id": 5, "label": "B 1", "level": 2 },
{ "id": 6, "label": "C 1", "level": 3 },
{ "id": 7, "label": "B 2", "level": 2 },
{ "id": 8, "label": "B 3", "level": 2 }
],
"edges" : [
{ "from": 1, "to": 2 },
{ "from": 1, "to": 3 },
{ "from": 1, "to": 4 },
{ "from": 2, "to": 5 },
{ "from": 5, "to": 6 },
{ "from": 3, "to": 7 },
{ "from": 4, "to": 8 }
]
}
var app = angular.module('bomApp', ['bomGraph']);
app.controller('bomController', ['$scope', 'appService', '$rootScope', function ($scope, appService, $rootScope) {
var get = function () {
appService.get().then(function (promise) {
$scope.graph = {
options: {
"hierarchicalLayout": {
"direction": "UD"
},
"edges": {
"style":"arrow-center",
"color":"#c1c1c1"
},
"nodes": {
"shape":"oval",
"color":"#ccc"
}
},
data: {
nodes: promise.nodes,
edges: promise.edges
}
};
});
};
$scope.newNode = {
id: undefined,
label: undefined,
level: undefined,
parent: undefined,
};
$scope.arrNode = {};
$scope.update = function (nodes) {
$scope.arrNode = angular.copy(nodes);
$rootScope.nodex = angular.copy(nodes);
};
$scope.newEdge = {
id: undefined,
from: undefined,
to: undefined
};
$scope.arrEdge = {};
$scope.updateE = function (edges) {
$scope.arrEdge = angular.copy(edges);
$rootScope.edgex = angular.copy(nodes);
};
get();
}]);
app.factory('appService', ['$q', '$http', '$rootScope', function ($q, $http, $rootScope) {
return {
get: function (method, url) {
var deferred = $q.defer();
$http.get('data.json')
.success(function (response) {
deferred.resolve(response);
})
return deferred.promise;
},
};
}]);
<body data-ng-app="bomApp">
<div data-ng-controller="bomController">
<h3>Create Your Own Graph</h3>
<div class="node">
<h4>Nodes:</h4>
<div class="panel">
<label>Id:</label>
<input type="text" id="idNode" data-ng-model="newNode.id"/>
<br />
<label>Label:</label>
<input type="text" id="label" data-ng-model="newNode.label" />
<br />
<label>Level:</label>
<input type="text" id="level" data-ng-model="newNode.level" />
</div>
<div>
<button id="addNode" data-ng-click="update(newNode)">Add</button>
</div>
</div>
<div class="node">
<h4>Edges:</h4>
<div class="panel" >
<label>Id:</label>
<input type="text" id="idEdge" data-ng-model="newEdge.id"/>
<br />
<label>From:</label>
<input type="text" id="from" data-ng-model="newEdge.from"/>
<br />
<label>To:</label>
<input type="text" id="to" data-ng-model="newEdge.to"/>
</div>
<div>
<button id="addEdge" data-ng-click="updateE(newEdge)">Add</button>
</div>
</div>
<div data-custom-dir="" id="graph" data="graph.data" options="graph.options"></div>
<div>
<h3>Monitor The Changes</h3>
<div class="node">
<h4>Nodes:</h4>
<div class="col">
<div id="nodes">
<pre>{{newNode | json}}</pre>
<pre>{{arrNode | json}}</pre>
</div>
</div>
</div>
<div class="node">
<h4>Edges:</h4>
<div class="col">
<div id="edges">
<pre>{{newEdge | json}}</pre>
<pre>{{arrEdge | json}}</pre>
</div>
</div>
</div>
</div>
</div>
</body>

You can add items to a javascript object using .push(). To make an update, you'll have to loop through the object until you find a matching id (or some other value).
Finally, you can use .appendTo() to update the section that indicates what changes have been made.
Example:
$('#addNode').click(function () {
// pseudo code to add item to javascript object:
// 'node' would be presumably nested based on the OP,
// but information on js object name is not provided
var nodeId = $('#idNode').val();
var nodeLabel = $('#label').val();
var nodeLevel = $('#level').val();
nodes.push({
"id": nodeId,
"label": nodeLabel,
"level": nodeLevel,
});
// psudeo code for updating js object
// loop through object to find matching id:
var locate = 0;
for (var i = 0; i < nodes.length; i++) {
if(node[i].id == nodeId){
locate = i;
node[i].label = nodeLabel;
node[i].level = nodeLevel;
}
}
// Adding results to element
var nodesElem = $('#nodes');
var addElem = "<pre> { newNode | " + JSON.stringify(node[locate]) + " }";
addElem.appendTo(nodesElem);
});

If you need it to be able to change existing records try :
$scope.graph.data.nodes[$scope.newNode.id] = $scope.newNode;
and
$scope.graph.data.edges.push($scope.newEdge);
These methods function calls should update the existing data with the newNode and the newEdge