Develop Reference

How to use nested optgroup reactjs

I have this nested optgroup:
<select>
<optgroup label="A">
<optgroup label="B">
<option>C</option>
<option>D</option>
<option>G</option>
</optgroup>
<optgroup label="J">
<option>K</option>
<option>L</option>
<option>M</option>
</optgroup>
</optgroup>
</select>
but the result is:

You can use Select from react-select.
import Select from "react-select";
const options = [
{
label: "A",
options: [
{
label: "B",
options: [
{
label: "C",
value: 1
},
{
label: "D",
value: 2
},
{
label: "G",
value: 3
}
]
},
{
label: "J",
options: [
{
label: "K",
value: 4
},
{
label: "L",
value: 5
},
{
label: "M",
value: 6
}
]
}
]
}
];
export const NestedOptGroup = () => <Select name="options" options={options} />
There is a working example of this react-select feature: https://codesandbox.io/s/react-codesandboxer-example-8xxyx?file=/index.js
Source: How can I create nested option groups in React Select (V2)?

you can use only 1 sub group, like this
<select>
<optgroup label="B">
<option>C</option>
<option>D</option>
<option>G</option>
</optgroup>
<optgroup label="J">
<option>K</option>
<option>L</option>
<option>M</option>
</optgroup>
</select>
if you wish add more subgroups you need to hack the identation
here have other answers for this:
Nesting optgroups in a dropdownlist/select

Angularjs drop-down select dynamically

Hi am a beginner in Angularjs, I want to select drop-down selected dynamically.
I refer some blogs but I don't understand that.
This is my HTML code:
<select class="form-control" name="category_id" ng-model="formData.category_id" ng-options="sub_directory.id as sub_directory.name for sub_directory in formData.getSubDirectories" ng-required="true">
<option value="">Select Sub Directory</option>
</select>
Js code:
$scope.getData = function() {
return webServices.getSync('getshops/' + $scope.Id).then(function(getData) {
if (getData.status == 200) {
$scope.formData = getData.data;
console.log($scope.formData);
} else {
$rootScope.$emit("showerror", getData);
}
});
}
$scope.getSubDirectories = function()
{
return webServices.getSync('getSubDirectories').then(function(getData)
{
$rootScope.loading = false;
if (getData.status == 200)
{
$scope.formData.getSubDirectories = getData.data;
} else {
$rootScope.$emit("showerror", getData);
}
//console.log($scope.formData.getSubDirectories);
});
}
My result in console
{
"id": 1,
"membership_type_id": 1,
"name": "Kallyan",
"address": "100 feet road",
"location": "Coimbatore",
"description": "Test",
"banner_image": "upload/directory/contact/directoryMsrq4NhsD1.jpg",
"business_days": [
"M",
"T",
"W",
"Th",
"F",
"S"
],
"start_time": "2019-01-10T09:01:00+05:30",
"end_time": "2019-01-10T10:01:00+05:30",
"contact_number": "9874563210",
"latitude": 11.2,
"longitude": 9.5,
"is_certified": 1,
"status": 3,
"rating": 0,
"is_online_order": 1,
"created_at": "1970-01-01 05:30:01",
"created_by": 0,
"is_active": 1,
"updated_at": "2019-01-09 18:14:22",
"updated_by": 0,
"status_updated_by": 0,
"status_updated_on": "2019-01-09 18:14:22",
"priority": 0,
"comments": "Test",
"additional_information": "",
"old_banner_image": "directoryMsrq4NhsD1.jpg",
"sub_directory": "Jewellery",
"getSubDirectories": [
0: {id: 2, name: "Jewellery", image: "directory5Wltlbhkwl.jpg", thumbnail_image: "directory5Wltlbhkwl.jpg", isparent: 1, …}
1: {id: 3, name: "Mobile", image: "directoryjWQeyCQlGe.jpg", thumbnail_image: "directoryjWQeyCQlGe.jpg", isparent: 1, …}
2: {id: 6, name: "KPN", image: "directoryC8qEC3o3Gh.jpg", thumbnail_image: "directoryC8qEC3o3Gh.jpg", isparent: 1, …}
]
}
My result page:
Here I want to select sub_directory: Jewellery as selected drop-down value.
I don't understand this code in HTML ng-options="sub_directory.id as sub_directory.name for sub_directory in formData.getSubDirectories".
Please give the answer. Thanks in advance.

Try like this way.
<select class="form-control" name="category_id" ng-model="formData.category_id" ng-options="sub_directory.id as sub_directory.name for sub_directory in formData.getSubDirectories" ng-required="true" ng-init="selected='Jewellery'">
<option value="">Select Sub Directory</option>
</select>
I have add this line ng-init="selected='Jewellery'" in your select tag.

<select class="account-form" ng-model="formData.category_id" id="category_id" name="category_id">
<option value="">---Select---</option>
<option ng-repeat="sub_directory.id as sub_directory.name for sub_directory in formData.getSubDirectories" ng-selected="sub_directory.id == 1">
{{sub_directory.name}}
</option>
</select>

Finally i got a result
<select class="form-control" ng-model="formData.category_id" ng-options="directory.id as directory.name for directory in formData.getSubDirectories" ng-init="formData.category_id='2'">
<option value="">Select Sub Directory</option>
</select>

Change Variable Value using a function with select values

How can I change the value of a variable which is outside a function. I want the variable "yr" in my code to be updated with a value from select form by the function update variable.
I looking to update the variable "yr", with the value from the drop down list in my html below. Then I want to use the value of "yr" in another variable called chart4. I have updated the code below.
var yr = "2017";
function updatevariable(data) {
yr = data;
console.log(yr);
};
var chart4 = {
"columns": [
{
"dimension": "dx",
"items": [
{
"id": "fbfJHSPpUQD"
}
]
}
],
"rows": [
{
"dimension": "pe",
"items": [
{
"id": yr
}
]
}
],
"filters": [
{
"dimension": "ou",
"items": [
{
"id": "fdc6uOvgoji"
}
]
}
],
"el": "chart4"
};
<select id="year" name="year" onchange="updatevariable(this.value)">
<option value="2017">2017</option>
<option value="2016">2016</option>
<option value="2015">2015</option>
<option value="2014">2014</option>
</select>

The function you written is correct one to change the value of the variable outside the function.
And a simple demo to understand that,
<!DOCTYPE html>
<html>
<head>
<title></title>
<script type="text/javascript">
var yr = "2017";
function updatevariable(data) {
yr = data;
};
function print(){
alert(yr);
console.log(yr);
}
</script>
</head>
<body>
<select id="year" name="year" onchange="updatevariable(this.value)">
<option value="2017">2017</option>
<option value="2016">2016</option>
<option value="2015">2015</option>
<option value="2014">2014</option>
</select>
<button onclick="print()">Updated date</button>
</body>
</html>

Simply adding an assignment to the yr inside char4 every time the drop down menu is changed.
Hope this will help!
var yr = "2017";
function updatevariable(data) {
yr = data;
chart4.rows[0].items[0].id = yr;
console.log(chart4.rows[0].items[0].id);
};
var chart4 = {
"columns": [
{
"dimension": "dx",
"items": [
{
"id": "fbfJHSPpUQD"
}
]
}
],
"rows": [
{
"dimension": "pe",
"items": [
{
"id": yr
}
]
}
],
"filters": [
{
"dimension": "ou",
"items": [
{
"id": "fdc6uOvgoji"
}
]
}
],
"el": "chart4"
};

Ng-Options in Angular for Arrays and Objects

First of all 2 working solutions:
Example 1 - Array in Controller
$scope.s1 = [
{
"name": "Item1",
"id": 1
},
{
"name": "Item2",
"id": 2
}
];
View 1
<select ng-model="select1" ng-options="foo.id as foo.name for foo in s1">
<option value="">Select a Value</option>
</select>
Example 2 - Object in Controller
The same concept may help you also here, if you know the name of "myS2":
$scope.s2 = {
"myS2": [
{
"name" : "Item1",
"id" : 1
},
{
"name": "Item2",
"id": 2
}
]
};
View 2
<select ng-model="select2" ng-options="foo.id as foo.name for foo in s2.myS2">
<option value="">Select a Value</option>
</select>
Now the question:
$scope.s2 has further objects {myS1:[..] to mySn:[..]} with different names and I want'to use them as option group name? How can I do that in ng-options?

I don't think that you can nest loops in ng-repeat, but, adding just a bit of business logic on your controller you can gain what you want!
hope it helps :)
(function(window, angular) {
function TestCtrl(vm, data) {
var options = [];
for(var group in data) {
if(!data.hasOwnProperty(group)) { continue; }
for(var i = 0, len = data[group].length; i < len; i++) {
var item = data[group][i];
item.group = group;
options.push(item);
}
}
vm.options = options;
vm.current = options[0];
}
angular
.module('test', [])
.value('S2', {
"myS2": [
{
"name" : "Item1 mys2",
"id" : 1
},
{
"name": "Item2 mys2",
"id": 2
}
],
"myS3": [
{
"name" : "Item1 mys3",
"id" : 1
},
{
"name": "Item2 mys3",
"id": 2
}
]
})
.controller('TestCtrl', ['$scope', 'S2', TestCtrl])
;
})(window, window.angular);
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<section ng-app="test">
<article ng-controller="TestCtrl">
<select ng-model="current" ng-options="item as item.name group by item.group for item in options">
</select>
</article>
</section>

update html table when dropdown value change

From json i need to update the table based on month and year from javascript.
Any approach is fine for me
For reference i have created the FIDDLEbut it is not complete yet, just want to show the real environment
link: :http://jsfiddle.net/qytdu1zs/1/
HTML
<div class="dropdown">
<select name="one" class="dropdown-select">
<option value="">Select Year</option>
<option value="0">2014</option>
<option value="1">2013</option>
<option value="2">2012</option>
</select>
</div>
<div class="dropdown ">
<select name="two" class="dropdown-select">
<option value="">Select Month</option>
<option value="0">January</option>
<option value="1">February</option>
<option value="2">March</option>
<option value="3">April</option>
<option value="4">May</option>
<option value="5">June</option>
<option value="6">July</option>
<option value="7">August</option>
<option value="8">September</option>
<option value="9">October</option>
<option value="10">November</option>
<option value="11">December</option>
</select>
</div>
html Table
<div id="example1"></div>
Jquery - i have used mustache.js
$.ajax({
url : 'data/front_finance.json',
dataType : 'json',
success : function (json) {
var customer = $('#example1').columns({
data : json,
schema : [{
"header" : "ID",
"key" : "id",
"template" : "{{id}}"
}, {
"header" : "Name",
"key" : "name",
"template" : '{{name}}'
}, {
"header" : "Actual",
"key" : "actual"
}, {
"header" : "Target",
"key" : "target"
}, {
"header" : "Status",
"key" : "status",
"template" : "<img src ='{{status}}' alt='{{status}}'></img>"
}, {
"header" : "Trend",
"key" : "trend",
"template" : "<img src ='{{trend}}' alt='{{trend}}'></img>"
}
]
});
}
});
JSON
[
{
"year": "2013",
"jan": [
{
"id": 1,
"name": "data",
"actual": "17",
"target": "19",
"status": "red",
"trend": "down"
}
],
"Feb": [
{
"id": 2,
"name": "data1",
"actual": "10",
"target": "19",
"status": "red",
"trend": "down"
}
],
"March": [
{
"id": 3,
"name": "data2",
"actual": "34",
"target": "19",
"status": "green",
"trend": "down"
}
]
},
{
"year": "2014",
"jan": [
{
"id": 1,
"name": "data",
"actual": "17",
"target": "19",
"status": "red",
"trend": "down"
}
],
"Feb": [
{
"id": 2,
"name": "data1",
"actual": "10",
"target": "19",
"status": "red",
"trend": "down"
}
],
"March": [
{
"id": 3,
"name": "data2",
"actual": "34",
"target": "19",
"status": "green",
"trend": "down"
}
]
}
]

NEW FIDDLE FIDDLE
$(document).ready(function (){
cloneObj= $("#example1").clone();
$('select[name=one]').on('change', function() {
var selectedYear=($("option:selected", this).text());
if (selectedYear!="Select Year"){
for (var a in data){
if(data[a].year==selectedYear){
objMonth=data[a];
return false;
}
}
}else{
objMonth=null;
}
});
$('select[name=two]').on('change', function() {
var selectedYear=($("option:selected", $('select[name=one]')).text());
if (selectedYear!="Select Year"){
var selectedMonth=($("option:selected", this).text());
var jsonValue=objMonth[MonthMap[selectedMonth]];
$("#example1").replaceWith(cloneObj.clone());
$('#example1').columns({ data : jsonValue});
}else{
alert("Please Select year please");
}
});
});

I'll give you an approach on how to go about this. Now, I don't know the exact html of your table how the td and tr are structured, so I'm not going to be able to give you exact code that you can replicate.
You let the user select the month and year from the dropdown whose value you can get in jquery. What would help here greatly is if you have the option values set according to the way months are stored in the JSON array.
//JSON array is structured somewhat like:
"jan": [
{
"id": 1,
"name": "data",
"actual": "17",
"target": "19",
"status": "red",
"trend": "down"
}
]
//Your HTML could be
<select name="two" class="dropdown-select">
<option value="">Select Month</option>
<option value="jan">January</option>
<option value="Feb">February</option>
<option value="March">March</option>
Although this is not a necessity, this would greatly help in accessing the corresponding values in the JSON array. Otherwise you would require a mapping of the option values or text to the month names in form of an array or a suitable data structure.
var selectedMonth;
var selectedYear;
//Store the information selected from the dropdown menu for month and year respectively
//Assuming the JSON array is named arr
$.each( arr, function( index, value ) {
if (arr[index]['year'] == selectedYear){
var foo = arr[index]['year'][selectedMonth][0]; //Based on your array defintion
//You can access the required info of this object by simply doing:
//foo.id,foo.name,foo.status etc. and update the relevant table elements' html here
}
});
I hope this gets you started in the right direction.

We have a table ABC. In that table we have a column which contains dropdown as select having value as blank, option a, option b. Now, with change with this dropdown I want to update the input field accordingly, i.e; if a is chosen, input field value will be 100, if b is chosen, input field will be 0 and if blank is chosen, input field will be blank , readonly. The input field id is set to input_ where i is 1 to no of rows in the table.
Below is the code for implementing this.
HTML :
<select id="select" onChange="changeEvent(this.options[this.selectedIndex].value);" name="select">
Javascript:
function changeEvent(chosen) {
var table = document.getElementById("ABC");
var rows = document.querySelectorAll('tr');
var rowsArray = Array.from(rows);
table.addEventListener('change', (event) => {
var target = event.target.toString();
var rowIndex = rowsArray.findIndex(row => row.contains(event.target));
var x = table.rows.length;
var id = "input_"+(parseInt(rowIndex) - 2).toString();
if(chosen === "a") {
table.rows[rowIndex].cells.item(3).innerHTML="<td><input value='100' id='"+id+" 'style='width:50px;'></input></td>";
return;
}else if(chosen === "b"){
table.rows[rowIndex].cells.item(3).innerHTML="<td><input value='0' id='"+id+"' readonly style='width:50px;'></input></td>";
return;
}else{
table.rows[rowIndex].cells.item(3).innerHTML="<td><input value='' id='"+id+"' readonly style='width:50px;'></input></td>";
return;
}
})
}