I need to select a particular tree node during runtime (after assigning Json data) using $('#mytree').jstree(true).settings.core.data.
Here is my jquery code:
$('#mytree').jstree(true).settings.core.data = mytreedataJson;
$('#mytree').jstree(true).refresh();
$("#mytree").jstree("select_node", "1");
and also tried
$('#mytree').jstree(true).select_node("1");
$.jstree.reference('#mytree').select_node("1");
and here is my Json data:
var mytreedataJson = [{ "id": "1", "text": "Start Process", "parent": "#" }, { "id": "2", "text": "End Process", "parent": "#" }, { "id": "3", "text": "Next Process", "parent": "1" }];
Actually, this code works fine with the jstree version 3.0.0, but not with the greater versions.
You need to make sure your code works with async operations - refresh will not return immediately. You should probably use:
$('#mytree')
.one("refresh.jstree", function (e, data) {
data.instance.select_node("1");
}).jstree(true).refresh();
Related
I have an array of objects that I am using as a dataset in an interactive data dashboard. I want to add a new feature that displays data from only one object at a time, rather than pulling data from all objects (which I am already doing and it works well). As a test case, I have created a simple array:
var test1 = [
[{
"name": "Piece One",
"amount": 5
}, {
"name": "Piece Two",
"amount": 5
}, {
"name": "Piece Three",
"amount": 5
}],
[{
"name": "Piece One",
"amount": 1
}, {
"name": "Piece Two",
"amount": 1
}, {
"name": "Piece Three",
"amount": 5
}]
];
and the Vega-lite javascript:
var pieCreate = {
"$schema": "https://vega.github.io/schema/vega-lite/v5.json",
"title": "A pie chart",
"description": "A simple pie chart with embedded data.",
"width": "container",
"height": "container",
"data": {
"values": test1[0]
},
"mark": "arc",
"encoding": {
"theta": {
"field": "amount",
"type": "quantitative"
},
"color": {
"field": "name",
"type": "nominal",
"legend": null
}
}
};
This works, but I want the user to be able to choose which object to display (in the dashboard, each object contains data on different schools, and I want the user to be able to choose which school's data to display using a dropdown menu). My first thought was to set up a signal in the "data": {"values": field that would change the number in brackets to the array I want, but after a lot of trial and error, I think that may be a dead end. Signals should work to modify "field": "amount" and "field": "name" but I've tried every iteration of [0].amount that I can think of, while dropping the brackets from test1[0] and nothing has worked. If I can manage to access the object by directly referencing it in "field": I believe I can figure out the process using a signal and html form, but I'm starting to doubt if I'm even on the right track here.
I also tried the process outlined here in the vega-lite documentation: https://vega.github.io/vega-lite/tutorials/streaming.html, but it's doing something much more complicated than what I'm trying to do, and my javascript knowledge isn't sufficient to break it down to something usable. Does anyone have any ideas on how to make this work, using any of the above approaches (or a new, better one)?
You can use the vega Api's to change the data. On your selection, add a change event and on some conditions you can toggle between your data using those API's.
Refer the below snippet or fiddle:
var test1 = [
[{
"name": "Piece One",
"amount": 5
}, {
"name": "Piece Two",
"amount": 5
}, {
"name": "Piece Three",
"amount": 5
}],
[{
"name": "Piece One",
"amount": 1
}, {
"name": "Piece Two",
"amount": 1
}, {
"name": "Piece Three",
"amount": 5
}]
];
var yourVlSpec = {
"$schema": "https://vega.github.io/schema/vega-lite/v5.json",
"title": "A pie chart",
"description": "A simple pie chart with embedded data.",
"width": "350",
"height": "400",
"data": {
"values": test1[0]
},
"mark": "arc",
"encoding": {
"theta": {
"field": "amount",
"type": "quantitative"
},
"color": {
"field": "name",
"type": "nominal",
"legend": null
}
}
}
var view;
vegaEmbed("#vis", yourVlSpec).then(res => {
view = res.view;
});
function handleChange(a, b) {
var selectValue = document.getElementById("myselect").value;
if (selectValue == 'A') {
view.data('source_0', test1[0]);
} else {
view.data('source_0', test1[1]);
}
view.runAsync();
}
<script src="https://cdn.jsdelivr.net/npm/vega#5.20.2/build/vega.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/vega-lite#5.0.0/build/vega-lite.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/vega-embed#6.17.0/build/vega-embed.min.js"></script>
<select id="myselect" style="width:100px;" onchange="handleChange()">
<option>A</option>
<option>B</option>
</select>
<br>
<div id="vis"></div>
I receive with my ajax post request a message with values to display. This json response message looks like this:
{
"line": {
"name": "Google item",
"images": {
"element": {
"order": "1",
"link": "https://google.com/1.jpg",
"name": "1.jpg"
},
"element": {
"order": "2",
"link": "https://google.com/2.jpg",
"name": "2.jpg"
},
"element": {
"order": "3",
"link": "https://google.com/3.jpg",
"name": "3.jpg"
},
"element": {
"order": "4",
"link": "https://google.com/4.jpg",
"name": "4.jpg"
},
"element": {
"order": "5",
"link": "https://google.com/5.jpg",
"name": "5.jpg"
}
},
"features": {
"element": {
"name": "1",
"order": "1"
},
"element": {
"name": "2",
"order": "2"
},
"element": {
"name": "3",
"order": "3"
},
"element": {
"name": "4",
"order": "4"
}
},
"purchasing_price": "10",
"selling_price": "20",
"ftp_path": "google/item",
"description": ""
}
}
I'm in development and have not so much experience with json in jquery/ajax.
I tried this:
function parseContent(content){
$("#name").val(content.line.name);
$("#ftp_path").val(content.line.ftp_path);
$("#html_description").val(content.line.description);
$("#feature").remove();
$.each(content.line.features, function(k, v){
$("#features").append('<input type="text" class="form-control mt-3" id="feature" value="' + v.name + '" required>');
alert(v.name );
});
}
My problem is, the variable content contains just the last image und feature element. But in chrome/network I could see, the complete message has been received.
So I found out there is a parsing issue: Parsed JSON contains only the last element.
But how can I fix this in my case, to iterate through all elements?
The JSON specification says:
The names within an object SHOULD be unique.
The names in those objects are not.
SHOULD means:
that there
may exist valid reasons in particular circumstances to ignore a
particular item, but the full implications must be understood and
carefully weighed before choosing a different course.
The implications here are that every JSON parser (that I'm aware of at least) will ignore all but one of the values with duplicate names in an object.
If you really need to deal with that data then you are going to have to either track down a parser which can handle it (I'm not aware of any) or write a custom JSON parser which can (you'll also need to decide what data structure you want to generate from it because JS can't have duplicate property names in objects either). There are a number of JSON parsers on npm you might want to examine the source code of as a starting point.
A better solution would be to change whatever is generating the source data to produce a sensible format that doesn't violate a SHOULD requirement. Replacing the duplicate property names with an array for example.
I am new to AngularJs. I am having problem in appending options to select boxes created by javascript. Following is my code.
var inputElements = $('<div><label style="float:left;">' + i + '</label><select ng-model="object" class="form-control sel" style="width:300px; float:right; margin-right:75px;"> <option>select</option></select></div></br></br>');
var temp = $compile(inputElements)($scope);
$('#projOrder').append(temp);
$scope.object = object;
//for(var opt=0; opt<selOptLabels.length; opt++) {
$('.sel').append('<option ng-repeat="obj in object" value="'+
{{obj.value}}+'">'+{{obj.value}}+'</option>');
I am getting this error:- SyntaxError: invalid property id
Hi, I am posting json example. This is just a small part of json in my case.
"ProjectOrder": {
"Connect direct required": {
"value": "N",
"id": "STR_15523_62"
},
"Cores": {
"value": ".5",
"id": "NUM_15523_50"
},
"Permanent data in GB": {
"value": "100",
"id": "NUM_15523_56"
},
"Description": {
"value": "AZBNL azbngb",
"id": "STR_15523_2"
},
"Order Id": {
"value": "15523",
"id": "INT_15523_96"
},
"Project cost center": {
"value": "N",
"id": "STR_15523_66"
},
"Project debitor": {
"value": "N",
"id": "STR_15523_64"
},
"Project OE": {
"value": "N",
"id": "STR_15523_57"
},
"Project SITE": {
"value": "N",
"id": "STR_15523_59"
},
"Project Status": {
"value": "RFC",
"id": "STR_15523_54",
"dropdown": [
{
"value": "IW",
"label": "In Work"
},
{
"value": "RFC",
"label": "Ready for Creation"
},
{
"value": "CR",
"label": "Created"
},
{
"value": "FC",
"label": "Failed"
}
]
},
"Project Type (paas, miner)": {
"value": "paas",
"id": "STR_15523_37",
"dropdown": [
{
"value": "paas",
"label": "PaaS Project"
},
{
"value": "miner",
"label": "Miner Project"
}
]
},
"WORK data in GB": {
"value": "100",
"id": "NUM_15523_55"
}
}
Now I have to create input fields and dropdown menus(if there is a dropdown menu) with json data
You really should not be hand-constructing HTML like that. It's best if you use a template and let the template engine handle the heavy lifting.
I also noticed that you're using object as the ng-model. Instead you should have a separate variable which will hold the selected value.
Here's a better way of doing this--in an .html file:
<div ng-repeat="object in listOfObjects"
<label style="float: left">{{ $index }}</label>
<select ng-model="selectedValues[$index]" class="form-control sel"
style="width:300px; float:right; margin-right:75px;"
ng-options="obj.value for obj in object"></select>
</div>
Then in whatever controller you have set up in JavaScript:
// this will be the list of selected values
$scope.selectedValues = new Array(list.length);
// this would be the array that each `object` is part of
$scope.listOfObjects = list;
This isn't the most elegant solution, but basically what I've done is construct an array that is the same length as the list of objects. Angular templates have a special variable $index when you're in an ng-repeat which tracks the current index of the array you're looping through.
So when a user changes the selected value of the 3rd select box (index 2), $scope.selectedValues[2] would be set to the selected option.
EDIT: on transforming the JSON to an array:
var list = Object.keys(json).map(function(jsonKey) {
return {
name: jsonKey,
label: json[jsonKey].label,
value: json[jsonKey].value
};
});`
So.. there are a number of reasons why that won't work. The provided code wouldn't even work because of the template brackets that you are trying to append to your html string...
$('.sel').append('<option ng-repeat="obj in object" value="' +{{obj.value}}+'">'+{{obj.value}}+'</option>');
Is there a reason that you are trying build your markup in js?
It's also advised not to use jquery inside angular controllers. If you have jquery loaded the jQuery object is available through angular.element, otherwise angular uses jQuery light.
Rather than enumerate on the other issues here, I put together this basic example of how a select works in Angular
https://codepen.io/parallaxisjones/pen/BRKebV
Also, you should consult the angular documentation before posting questions to stack overflow. The docs provide a pretty clear example of how to use ng-repeat in a select. https://docs.angularjs.org/api/ng/directive/select
EDIT: I updated my codepen with an example of fetching JSON data with an HTTP GET request
EDIT: updated codepen with provided data example, iterating over object with (key, value) in json syntax in ng-repeat
I have a section of html that contains a rather large set of input controls that is generated dynamically from a set of JSON data returned from the server.
The HTML controls are built from the JSON data along with the items associated with them.
The dropdownlist selection items are bound using the attributes:
data-bind='source: sourceObject'
data-text-field='optionText'
data-value-field='optionValue'
This is the javascript that creates the input select control:
function CreateSelectList(label, i, name) {
var element = '<select data-bind=\'source:reportFormData.FormField[' + i + '].Options.Option\' data-value-field=\'optionValue\' data-text-field=\'optionText\' id=\'' + name + '\' name=\'' + name + '\' data-role=\'dropdownlist\'></select>';
return CreateFormField(label, element);
}
Problem: I need to selectively modify the data source of one of the dropdowns. I can't figure out how to programatically change the datasource.
This doesn't work:
var ddlData = $("#ddl_location").data("kendoDropDownList");
ddlData.setDataSource(jsonData.Option);
nor does this:
$("#ddl_location").kendoDropDownList({
dataTextField: "optionText",
dataValueField: "optionValue",
dataSource: jsonData.Option
});
I've also tried calling these after:
ddlData.trigger("change");
ddlData.refresh();
jsonData.Option is in equivalent format to the original JSON element Report.FormField[i].Options.Option e.g. "Option": [ {"optionText": "All", "optionValue": "0"}, ...
The difference here is that it is a new subset of data that needs to replace the original datasource.
here is a excerpt from the full JSON used to initially create the controls:
{
"Report": {
"report_id": "1",
"FormField": [{
"description": "End DateTime Picker",
"name": "end_date",
"label": "End Date",
"FieldType": "datepicker",
"displayOrder": "2",
"isRequired": "1",
"requiredFieldValidationMessage": "End Date is required."
},
{
"description": "Client",
"name": "ddl_client",
"label": "Client",
"FieldType": "dropdownlist",
"displayOrder": "3",
"isRequired": "0",
"Options": {
"Option": [{
"optionText": "All",
"optionValue": "0"
},
{
"optionText": "*Airport Business Center",
"optionValue": "68955"
},
{
"optionText": "*Cushman & Wakefield",
"optionValue": "68996"
},
{
"optionText": "*IBMC College ",
"optionValue": "68804"
}
...
}
use read() on dataSource:
var ddlData = $("#ddl_location").data("kendoDropDownList");
ddlData.setDataSource(jsonData.Option);
ddlData.dataSource.read();
Currently working on jQuery auto complete (multi column) where the value is coming from json with my current code I am getting the below error coming from jQuery UI.
Here is my JSON data I have validate this json with this json
{
"school": [
{
"id": "1",
"schoolname_heading" : "Emirates College of Technology- UAE",
"description": "COL000001"
},
{
"id": "2",
"schoolname_heading" : "Al Khawarizmi International College- UAE",
"description": "COL000002"
},
{
"id": "3",
"schoolname_heading" : "Syscoms College",
"description": "COL000003"
},
{
"id": "4",
"schoolname_heading": "Other 1",
"description": "Other"
}
]
}
Here is my jquery code in this fiddle link
With the current code i am getting the header as the value.
Any suggestion guys.
Thanks in advance