display json data using xhrget (DOJO) - javascript

I am unable to figure out what is the problem with displaying json data..below is the code
var xhrGet1 = dojo.xhrGet({
url: "Page/",
handleAs: "json",
handle: function(response)
{
dojo.byId('json-data').innerHTML = response.questions[0];
}
});
Html
<div id='json-data'></div>
And my json file looks like this
{
"Info": {
"PURPOSE": ".... ",
},
"questions": [
{
"ID": 1,
"Question": "User ID",
"Information": "",
}, {
"ID": 2,
"Question": "Name",
"Information": "",
}
],
so on...any ideas??

The property handleAs : "json" in your xhr call makes the incoming json automatically eval'ed to javascript objects. So, you have to convert your javascript object back to string using JSON.stringify.
e.g. :
dojo.byId('json-data').innerHTML = JSON.stringify(response.questions[0]);
You can also use dojo.toJson for the same purpose. It uses json.stringify but has the benefit of having a second argument ("prettyprint"), allowing you to pretty-print out of the box, like this :
dojo.byId('json-data').innerHTML = dojo.toJson(response.questions[0], true);

wrap your JSON with PRE and CODE tags.
So:
dojo.byId('json-data').innerHTML = "<pre>code>" + response.questions[0] + "</code></pre>";
Also see: Display JSON as HTML for some libraries that can help you pretty-format your JSON when rendering in the browser

Related

How to retrieve data from json file

I am having trouble with accessing my json file from my javascript file. I would like to change the object to a different text in my json file once a submit button is clicked on the webpage. I am aware that I would use ajax to achieve this goal, but I do not know how to access the json file.
This is the db.json file
{
{
"assets": [
{
"id": "0946",
"manufacturer": "SONY",
},
{
"id": "0949",
"manufacturer": "AUDIOTECNIA"
}
],
"transfers": [
{
"id": 1,
"status": "in-progress"
}
]
}
This is my Javascript file
$('form').on('submit', function(e){
e.preventDefault();
parsedData = JSON.parse(db.json);
console.log(parsedData[0].id)
//Changing Status
$.ajax({
type: "PATCH",
url: `http://localhost:3000/transfers/`
});
I've tried using parseData because I read that is how to retrieve the object, from the json file, but I do not believe I am writing it correctly. What documentation or steps would one recommend for solving this issue?
You have an extra comma after "in-progress",
const parsedData = JSON.parse(`{
"transfers": [ {
"id": 1,
"status": "in-progress"
}]
}`)
Then, to access id in parsedData:
console.log(parsedData.transfers[0].id)
You did not initialize the variable parsedData.
var parsedData = JSON.parse(db.json);

JSON, Highcharts and Coldfusion json data

I have been trying to make this work for sometime and its I cannot seem to find the solution to make this work.
I am able to output JSON with my coldfusion CFC without issue, not I am trying to use this JSON with Highcharts.js. I have verified that the JSON is valid but highcharts seems to have an issue because in the series data there is double quotes surrounding the data. I've looked everywhere for a solution and I cannot seem to find any help that can set me on the right path. If I remove the double quotes from around the array in the series.data the chart loads in fine but I get away from it being dynamic.
Here is my JSON output from my CFC:`
{
"series": [{
"data": "[[Date.UTC(2017,05,21),2.9],[Date.UTC(2017,05,28),2.9],[Date.UTC(2017,06,04),3.1],[Date.UTC(2017,06,11),2.9]]",
"name": "ATC Main Pod A - B - C"
}, {
"data": "[[Date.UTC(2017,05,21),2.8],[Date.UTC(2017,05,28),2.6],[Date.UTC(2017,06,04),2.9],[Date.UTC(2017,06,11),2.9]]",
"name": "ATC Mays (ACB Blue)"
}, {
"data": "[[Date.UTC(2017,05,21),2.4],[Date.UTC(2017,05,28),2.6],[Date.UTC(2017,06,04),3],[Date.UTC(2017,06,11),3.2]]",
"name": "ATC Mays (ACB Purple)"
}, {
"data": "[[Date.UTC(2017,05,21),3.3],[Date.UTC(2017,05,28),3.3],[Date.UTC(2017,06,04),3.4],[Date.UTC(2017,06,11),3.3]]",
"name": "ATC R10 Pod D"
}, {
"data": "[[Date.UTC(2017,05,21),3.3],[Date.UTC(2017,05,28),3.4],[Date.UTC(2017,06,04),2.8],[Date.UTC(2017,06,11),1.9]]",
"name": "ATC TU Pod A - B"
}, {
"data": "[[Date.UTC(2017,05,21),2.9],[Date.UTC(2017,05,28),2.9],[Date.UTC(2017,06,04),3.1],[Date.UTC(2017,06,11),3.4]]",
"name": "CTRC 1st Floor"
}, {
"data": "[[Date.UTC(2017,05,21),2.9],[Date.UTC(2017,05,28),3.3],[Date.UTC(2017,06,04),3.2],[Date.UTC(2017,06,11),2.3]]",
"name": "CTRC 2nd Floor"
}]
}
Here is what my ajax call looks like:
function loadChartData(c){
$.ajax({type: "POST", url: "CFCs/survey.cfc", data: {method:"results_RLU", CENTERID: c},dataType: 'json',success: function(data){
options.series = data.series
var chart = new Highcharts.Chart(options)
}
});
}
Not a problem!
Simply iterate each item in the series and parse the data to valid JSON object.
Enjoy :)
function loadChartData(c){
$.ajax({type: "POST", url: "CFCs/survey.cfc", data: {method:"results_RLU", CENTERID: c},dataType: 'json',success: function(data){
options.series = data.series.map(function(item)
{
item.data = JSON.parse(item.data);
return item;
});
var chart = new Highcharts.Chart(options)
}
});
}

Return JSON results as JS array with AJAX?

Apologies in advance - I am new to this and so other answers have not been able to help me.
I have used AJAX to send data to a PHP script (part of a 3rd party API). The PHP script returns the results as JSON, but I have no idea how to format these on my HTML page.
Ultimately, I would like to save the JSON results as an array and then use JS/Jquery to format them on the page.
I am not sure how to modify the PHP and AJAX scripts to achieve this. Can anyone point me in the right direction?
My AJAX:
$.ajax({
type: 'POST',
url: 'calculator.php',
data: {toPostcode: toPostcodeValue, parcelLengthInCMs: parcelLengthInCMsValue, parcelHeighthInCMs: parcelHeighthInCMsValue, parcelWidthInCMs: parcelWidthInCMsValue, parcelWeightInKGs: parcelWeightInKGsValue},
success: function(data) {
<!--NOT SURE WHAT TO PUT HERE-->
}
})
PHP (after the calculator does its thing - not sure if it needs to be changed):
$serviceTypesJSON = json_decode($rawBody);
echo json_encode($serviceTypesJSON);
The expected JSON results should look like:
{
"services": {
"service" : [
{
"code": "AUS_PARCEL_REGULAR",
"name": "Parcel Post (your own packaging)",
"speed": 2,
"price": 6.95,
"max_extra_cover": 5000,
"extra_cover_rule": "100,1.5,1.5",
"icon_url": "http://test-static.npe.auspost.com.au/api/images/pac/regular_post_box.png",
"description": "Based on the size and weight you've entered",
"details": "Check our ",
"delivery_time": "Delivered in up to 3 business days",
"ui_display_order": 1,
"options": {
"option": [
{
"code": "AUS_SERVICE_OPTION_STANDARD",
"name": "Standard Service",
"price": "0.00",
"price_type": "static",
"option_type": "optional",
"ui_display_order": 1
},
{
"code": "AUS_SERVICE_OPTION_SIGNATURE_ON_DELIVERY",
"name": "Signature on Delivery",
"price": 2.95,
"price_type": "static",
"option_type": "optional",
"tooltip": "Signature on Delivery provides you with the peace of mind that your item has been delivered and signed for.",
"ui_display_order": 2,
"suboptions": {
"option": {
"code": "AUS_SERVICE_OPTION_EXTRA_COVER",
"name": "Extra Cover",
"option_type": "optional",
"price_type": "dynamic",
"tooltip": "Extra Cover provides cover for loss, damage or theft of your item and will fully compensate you to the value specified for your item.",
"ui_display_order": 1
}
}
}
]
}
},
You can do two things, if the return data is JSON use dataType: "json" in the AJAX call.
Edit 1
If you are using dataType: "json". Which is more preferred if you are sure the data return is JSON string. data variable in the success will directly give you the JSON object. I think you can access it like data['services'].
success: function (data) {
jsonObj = $.parseJSON(data);
//this gives you the inner onject of the return data
servicesObj = jsonObj.services;
}
Or you can just get the data then use jQuery.parseJSON() to parse the data string into JSON object.
$.ajax({
type: 'POST',
url: 'calculator.php',
data: {
toPostcode: toPostcodeValue,
parcelLengthInCMs: parcelLengthInCMsValue,
parcelHeighthInCMs: parcelHeighthInCMsValue,
parcelWidthInCMs: parcelWidthInCMsValue,
parcelWeightInKGs: parcelWeightInKGsValue
},
success: function (data) {
jsonObj = $.parseJSON(data);
//this gives you the inner onject of the return data
servicesObj = jsonObj.services; //or jsonObj["services"]
}
})
Your success function will never be called if you are using
echo json_encode(); in your php script.
You should add dataType:'json' after type:'POST' and then your success function will get called and will get the result returned by server in data

invalid character javascript error while using JSON.parse

I am trying to convert a json string to object format read from a .js file.
Below is the JSON string in document.js
[
{
"type": "TableShape",
"id": "63c0f27a-716e-804c-6873-cd99b945b63f",
"x": 80,
"y": 59,
"width": 99,
"height": 107,
"name": "Group",
"entities": [
{
"text": "id",
"id": "49be7d78-4dcf-38ab-3733-b4108701f1"
},
{
"text": "employee_fk",
"id": "49be7d78-4dcf-38ab-3733-b4108701fce4"
}
]
}
];
now i am calling the document.js in window load using AJAX like below
$(window).load(function () {
$.ajax({
url: "JS/Draw2d/SampleData/document.js",
async: false,
success: function (result) {
debugger;
jsonStringFromServer = JSON.parse(result);//Here Javascript error stating invalid character
alert(jsonStringFromServer);
}
});
});
When the $.ajax function receives JSON, it automatically deserialises it for you. The error you're seeing is being cause because you're passing an object to JSON.parse, not a JSON formatted string - you don't need to use JSON.parse at all. Try this:
success: function (result) {
debugger;
console.log(result); // = the received object
}
I would also strongly suggest you remove async: false as it is extremely bad practice to use it.

Parse JSON YQL Output with jQuery append to IDs

I have a YQL output JSON string at this URL: YQL JSON
I found some other
I am trying to understand why I cannot get certain items out of the JSON return. For example, using jQuery, if I want the first DIVs H1 I use:
$.ajax({
url:"http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20html%20where%20url%3D%22http%3A%2F%2Fwww.missoulaavalanche.org%2Fcurrent-advisory%2F%22%20and%20xpath%3D'%2F%2Fdiv%5B%40id%3D%22content%22%5D%2Fdiv%5B1%5D'&format=json",
dataType: 'jsonp',
jsonp: 'callback',
jsonpCallback: 'cbfunc'
});
function cbfunc(data){
var id = data.query.results.div;
$('#table').append('<li>'+id.h1+'</li>');
$('#table').listview('refresh');
}
I have tried to get some info, say the img alt or img src, from the second div... div1 like so:
function cbfunc(data){
var id = data.query.results.div[1];
$('#table').append('<li>'+id.img.alt+'</li>');
$('#table').listview('refresh');
}
I keep getting Undefined or no results... What I am missing or not understanding about getting results from the yql JSON list?
EDIT: I read a post on the YQL Blog about Cache busting... So I am using their suggestion there.
EDIT 2: here is the JSON from the yql. I would like to get div img src for example, but am not getting a return or I get an object. I think it would be data.query.results.div1.img.src
I get data.query.results.div.h1 no problem:
cbfunc({
"query": {
"count": 1,
"created": "2012-03-28T15:36:28Z",
"lang": "en-US",
"results": {
"div": {
"id": "content",
"div": [
{
"class": "post-2491 post type-post status-publish format-standard hentry category-advisories",
"id": "post-2491",
"h1": "March 26, 2012 Avalanche Advisory",
"p": {
"class": "postmetadata alt",
"small": {
"br": [
null,
null
],
"a": {
"href": "http://www.missoulaavalanche.org/category/advisories/",
"rel": "category tag",
"title": "View all posts in Advisories",
"content": "Advisories"
},
"content": "This entry was posted on Monday, March 26th, 2012 at 6:55 am\n Categories: \n"
}
},
"div": [
{
"id": "danger_rating",
"a": {
"href": "http://www.missoulaavalanche.org/wp-content/themes/missoula-avalanche/images/ratings/avalanche_danger_scale.jpg",
"img": {
"alt": "Current Danger Rating is MODERATE",
"src": "http://www.missoulaavalanche.org/wp-content/themes/missoula-avalanche/images/ratings/moderate.gif"
}
}
},
{
The jsonp function option is just define the function name server uses for the wrapper for jsonp.
To access your data you need to do it in success callback of $.ajax. Your code above is missing the $ before .ajax
$.ajax({
url: "http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20html%20where%20url%3D%22http%3A%2F%2Fwww.missoulaavalanche.org%2Fcurrent-advisory%2F%22%20and%20xpath%3D'%2F%2Fdiv%5B%40id%3D%22content%22%5D%2Fdiv%5B1%5D'&format=json",
dataType: 'jsonp',
jsonp: 'callback',
jsonpCallback: 'cbfunc',
success: function(data) {
var results=data.query.results;
/* work with results object here*/
}
});
It's easier than you think if you use jQuery.getJSON.
Try this:
$.getJSON("http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20html%20where%20url%3D%22http%3A%2F%2Fwww.missoulaavalanche.org%2Fcurrent-advisory%2F%22%20and%20xpath%3D'%2F%2Fdiv%5B%40id%3D%22content%22%5D%2Fdiv%5B1%5D'&format=json",
function(data) {
var id = data.query.results.div;
$('#table').append('<li>'+id.h1+'</li>');
$('#table').listview('refresh');
}
);

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