I have the following json
{
"Title": "Test",
"StartDate": {
"Month": "3",
"Year": "1973"
},
"EndDate": {
"Month": "4",
"Year": "1974"
}
}
I want Month and Year values from StartDate and EndDate to be without quotes, like this:
{
"Title": "Test",
"StartDate": {
"Month": 3,
"Year": 1973
},
"EndDate": {
"Month": 4,
"Year": 1974
}
}
EDIT
I'm not creating the json, with JSON.stringify(). My JSON is created by Form Builder module from Angular 2, despite the fact that I'm setting it's type to number, after I change the value, the value gets quotes.
Before saving your JSON, use the parseInt() functions to convert your values into integers. This will remove the quotes.
JSON.stringify({
Month: parseInt( value , 10);
})
See this answer
EDIT
If you made that JSON Object earlier in your JavaScript code, go for #Adrian Lambertz's answer. If you got that JSON as a String from somewhere else and want to convert it, read my answer :
My original answer
Say you got this JSON as a string in your JavaScript code, you could convert the desired values to integers like this :
var events = JSON.parse(JSONStringYouWantToConvert);
// if the JSON String is an array of events that all have a Title, a StartDate and an EndDate
for (var i = 0; i < events.length; i++) {
// else, forget about the loop and the [i] index, the concept remains the same
events[i].StartDate.Month = parseInt(events[i].StartDate.Month);
events[i].StartDate.Year = parseInt(events[i].StartDate.Year);
events[i].EndDate.Month = parseInt(events[i].EndDate.Month);
events[i].EndDate.Year = parseInt(events[i].EndDate.Year);
}
// make a JSON String that wont have the quotes around the Month and Year numbers
var JSONStringConverted = JSON.stringify(events);
Just convert the strings to numbers.
This code is just an example, you can adapt it to whatever your object structure is.
function normalize(target) {
for (const date of ['StartDate', 'EndDate']) {
for (const item of ['Month', 'Year']) {
target[date][item] = Number(target[date][item]);
}
}
}
I can not see the order from which data the result is expeceted, so here two versions.
Object -> JSON (-> Object)
This works with JSON.stringify
and a replacer function for creating numbers for certain keys, like Month and Year.
var dataObj = { "Title": "Test", "StartDate": { "Month": "3", "Year": "1973" }, "EndDate": { "Month": "4", "Year": "1974" } },
jsonStr = JSON.stringify(dataObj, function (k, v) {
return ['Month', 'Year'].indexOf(k) !== -1 ? +v : v;
}),
parsed = JSON.parse(jsonStr);
console.log(jsonStr);
console.log(parsed);
JSON -> Object
This works with JSON.parse
and a reviver function for creating numbers for certain keys, like Month and Year.
var jsonStr = '{ "Title": "Test", "StartDate": { "Month": "3", "Year": "1973" }, "EndDate": { "Month": "4", "Year": "1974" } }',
parsed = JSON.parse(jsonStr, function (k, v) {
return ['Month', 'Year'].indexOf(k) !== -1 ? +v : v;
});
console.log(parsed);
Related
I am trying to remove the "Duplicate" objects within an array while retaining the object that has the lowest value associated with it.
~~Original
var array = [
{
"time": "2021-11-12T20:37:11.112233Z",
"value": 3.2
},
{
"time": "2021-11-12T20:37:56.115222Z",
"value": 3.8
},
{
"time": "2021-11-13T20:37:55.112255Z",
"value": 4.2
},
{
"time": "2021-11-13T20:37:41.112252Z",
"value": 2
},
{
"time": "2021-11-14T20:37:22.112233Z",
"value": 3.2
}
]
~~Expected Output
var array = [
{
"time": "2021-11-12T20:37:11.112233Z",
"value": 3.2
},
{
"time": "2021-11-13T20:37:41.112252Z",
"value": 2
},
{
"time": "2021-11-14T20:37:22.112233Z",
"value": 3.2
}
]
What I have so far:
var result = array.reduce((aa, tt) => {
if (!aa[tt.time]) {
aa[tt.time] = tt;
} else if (Number(aa[tt.time].value) < Number(tt.value)) {
aa[tt.time] = tt;
}
return aa;
}, {});
console.log(result);
I realize the issue with what I am trying to do is that the "time" attribute is not identical to the other time values I am considering as duplicates.
Though for this use case I do not need the time out to ms. YYYY-MM-DDTHH:MM (to the minute) is fine. I am not sure how to implement a reduction method for this case when the time isnt exactly the same. Maybe if only the first 16 characters were checked in the string?
Let me know if any additional information is needed.
So a few issues:
If you want to only check the first 16 characters to detect a duplicate, you should use that substring of tt.time as key for aa instead of the whole string.
Since you want the minimum, your comparison operator is wrong.
The code produces an object, while you want an array, so you still need to extract the values from the object.
Here is your code with those adaptations:
var array = [{"time": "2021-11-12T20:37:11.112233Z","value": 3.2},{"time": "2021-11-12T20:37:56.115222Z","value": 3.8},{"time": "2021-11-13T20:37:55.112255Z","value": 4.2},{"time": "2021-11-13T20:37:41.112252Z","value": 2},{"time": "2021-11-14T20:37:22.112233Z","value": 3.2}];
var result = Object.values(array.reduce((aa, tt) => {
var key = tt.time.slice(0, 16);
if (!aa[key]) {
aa[key] = tt;
} else if (Number(aa[key].value) > Number(tt.value)) {
aa[key] = tt;
}
return aa;
}, {}));
console.log(result);
I have an output of REST API in following JSON format:
I need to convert the format to flat format so it can be passed as input to another API call.
{
"result": {
"data": [
{
"data": 2.824315071105957,
"dateTime": "2019-09-10T11:32:05.220Z",
"device": { "id": "b3" },
"diagnostic": { "id": "DiagnosticAccelerationForwardBrakingId" },
"controller": "ControllerNoneId",
"version": "00000000000363b0",
"id": "a5UyPzhknSC-N2wtLBph3BA"
},
{
"data": 0,
"dateTime": "2019-09-10T11:32:05.220Z",
"device": { "id": "b3" },
"diagnostic": { "id": "DiagnosticAccelerationSideToSideId" },
"controller": "ControllerNoneId",
"version": "00000000000363b1",
"id": "a5UyPzhknSC-N2wtLBph3BQ"
},
// ... 1000's of rows like this
]
}
}
I need to convert it in below format using a java-script
Desired format:
{"result":{ "data":[{"id":"b3","dateTime":"2019-09- 10T11:32:05.220Z","DiagnosticAccelerationSideToSideId":0,"DiagnosticAccelerationForwardBrakingId ":2.824315071105957},...
The rows needs to be merged with primary key as combination of ID and dateTime attributes. Please note the diagnostic id value becomes key for the required format and data value is the value of the key.
Is there any way to convert this JSON to above flat format.
Need to convert JSON having many rows for single data entry to single row format. Need one java-script function that can accept a string of rows format and convert or merge it and return the string in desired format
function String mergeRows(String flatDataJSONString) {
...
}
If the items are ordered (meaning i and i+1 are merged) than iterate with jumps of i += 2;
If its not ordered or the amount of items to be merged can be > 2 you use an object with unique key composed of the id and date, and override its data whenever a record match this key:
function merger (jsonStr) {
// convert str to obj
const jsonObj = JSON.parse(jsonStr);
const dataObj = {};
for (let i = 0; i < jsonObj.result.length; i++) {
const item = jsonObj.result[i];
// use unique key to merge by
const itemUniqueKey = item.device.id + item.dateTime;
// take last value or create empty object if not exists
const existingItem = dataObj[itemUniqueKey] || {};
// add some logic to merge item with existingItem as you need
...
// set the result back to dataObj to be used on next merges
dataObj[itemUniqueKey] = [merge result of item and existing item];
}
// take dataObj values, you don't need the keys any more
const dataArr = Object.values(dataObj);
const finalResult = {
result: {
data: dataArr
}
}
// convert back to json
return JSON.stringify(finalResult);
}
As stated in the comment you want first to have a clean json definition in order to stringify it. Please get to the following definition of your JSON first:
const json = {
"result": [
{
"data": 2.824315071105957,
"dateTime": "2019-09-10T11:32:05.220Z",
"device": { "id": "b3" },
"diagnostic": { "id": "DiagnosticAccelerationForwardBrakingId" },
"controller": "ControllerNoneId",
"version": "00000000000363b0",
"id": "a5UyPzhknSC-N2wtLBph3BA"
},
{
"data": 0,
"dateTime": "2019-09-10T11:32:05.220Z",
"device": { "id": "b3" },
"diagnostic": { "id": "DiagnosticAccelerationSideToSideId" },
"controller": "ControllerNoneId",
"version": "00000000000363b1",
"id": "a5UyPzhknSC-N2wtLBph3BQ"
}]
};
and then you will be able to perform like hereafter :
JSON.stringify(json)
Hope this helps !
I'm asking here as I can see this website the most one can help in this
I have an output value in JASON format as the following:
{
"total": 16,
"members": [{
"id": 4,
"name": "Blade11",
"descriptors": {
"os": "Windows 2012 / WS2012 R2"
},
"FCPaths": [{
"wwn": "50060B0000C27208",
"hostSpeed": 0
}, {
"wwn": "50060B0000C2720A",
"hostSpeed": 0
}],
"iSCSIPaths": [],
"persona": 11,
"links": [{
"href": "https://3par:8080/api/v1/hostpersonas?query=\"wsapiAssignedId EQ 11\"",
"rel": "personaInfo"
}],
"initiatorChapEnabled": false,
"targetChapEnabled": false
}, {
"id": 6,
"name": "Blade4",
"descriptors": {
"os": "VMware (ESXi)"
},
"FCPaths": [{
"wwn": "50060B0000C27216",
"hostSpeed": 0
}, {
"wwn": "50060B0000C27214",
"hostSpeed": 0
}],
"iSCSIPaths": [],
"persona": 8,
"links": [{
"href": "https://3par:8080/api/v1/hostpersonas?query=\"wsapiAssignedId EQ 8\"",
"rel": "personaInfo"
}],
"initiatorChapEnabled": false,
"targetChapEnabled": false
}
what I want is, to parse this output for retrieving an output parameter with the name object only in a list or array of string
for example Names = Blade11, Blade4,....
if you can see in the Json output we have all the names under "members", then each one is another array of values, I want to retrieve only names
thanks
If this JSON is string first you have to parse it
var json = JSON.parse('here is your JSON string');
Than you can access to it properties like you work with object
var names = json.members.map(function(member) {
return member.name;
});
Since you already have JSON format, you can use an array method on the member key of your JSON object to iterate through each array item.
var names = [];
object_name.members.forEach((arrItem) => {
names.push(arrItem.name);
}
or
namesArray = object_name.members.map((arrItem) => {
return arrItem.name;
}
You could use Array#map for iterating all elements of the array and return only the name property.
If you have a JSON string, you need to parse it in advance for getting an object, like
object = JSON.parse(jsonString);
var jsonString = '{"total":16,"members":[{"id":4,"name":"Blade11","descriptors":{"os":"Windows 2012 / WS2012 R2"},"FCPaths":[{"wwn":"50060B0000C27208","hostSpeed":0},{"wwn":"50060B0000C2720A","hostSpeed":0}],"iSCSIPaths":[],"persona":11,"links":[{"href":"https://3par:8080/api/v1/hostpersonas?query=\\"wsapiAssignedId EQ 11\\"","rel":"personaInfo"}],"initiatorChapEnabled":false,"targetChapEnabled":false},{"id":6,"name":"Blade4","descriptors":{"os":"VMware (ESXi)"},"FCPaths":[{"wwn":"50060B0000C27216","hostSpeed":0},{"wwn":"50060B0000C27214","hostSpeed":0}],"iSCSIPaths":[],"persona":8,"links":[{"href":"https://3par:8080/api/v1/hostpersonas?query=\\"wsapiAssignedId EQ 8\\"","rel":"personaInfo"}],"initiatorChapEnabled":false,"targetChapEnabled":false}]}',
object = JSON.parse(jsonString),
array = object.members.map(function (a) { return a.name; });
console.log(array);
i am trying to get specific week(such as saturday) days collection from my mongodb. here is the example DB collection
var array2 = [
{
"_id": "1",
"start": "2016-08-23T16:00:00.000Z",
},
{
"_id": "2",
"start": "2016-08-26T21:00:00.000Z",
},
{
"_id": "3",
"start": "2016-08-23T16:10:00.000Z",
}];
javascript week reference
to get Saturday entry i run a map, and here is the code
array2.map(function(object){
var newObject = {};
var nedatee = new Date(object.start);
var weekday = nedatee.getDay();
if (weekday===6) {
newObject['start'] = true;
}
return newObject;
});
the output is
[ {}, {'start':true}, {}]
i dont want the empty object in my array, and i dont want to manually remove it, is there any smarted way? how can i make good use of reduceRight ?
all i want is
[{'start':true}]
javascript map reference if you need
You could use reduceRight and splice the failures:
var array2 = [
{
"_id": "1",
"start": "2016-08-23T16:00:00.000Z",
},
{
"_id": "2",
"start": "2016-08-26T21:00:00.000Z",
},
{
"_id": "3",
"start": "2016-08-23T16:10:00.000Z",
}];
array2.reduceRight(function(acc,v,i) {
if (new Date(v.start).getUTCDay() != 6){
array2.splice(i,1);
}
},null)
console.log(array2);
Note that the date will be parsed as UTC, so 2016-08-26T21:00:00.000Z will be Saturday in any timezone that is UTC+0300 or more, hence use of getUTCDay (i.e. none of the days is Saturday in the GMT time zone).
Also, you should not really rely on parsing any date string with the Date constructor. You should use a parser and provide the format, see Chrome can't parse date but IE can.
Have you considered using javascript some? Your code would then be
var hasSaturdays = array2.some(function isSaturday(object){
var nedatee = new Date(object.start);
return nedatee.getDay() === 6;
});
Then if hasSaturdays is true then you can return [{'start':true}]
Please note that it is only IE 9+
Using UTC time zone or not this is a simple filtering work and there is Array.prototype.filter() just for this job.
var array2 = [
{
"_id": "1",
"start": "2016-08-23T16:00:00.000Z",
},
{
"_id": "2",
"start": "2016-08-26T21:00:00.000Z",
},
{
"_id": "3",
"start": "2016-08-23T16:10:00.000Z",
}],
saturdays = array2.filter(date => (new Date(date.start)).getDay() === 6)
.map(date => ({start:true}));
console.log(saturdays);
I was trying to show my json data using jquery.each().
now this is the json
var json =
[
{"id":"1","tagName":"apple"},
{"id":"2","tagName":"orange"
}]
then i can show it
$.each(json, function(idx, obj) {
alert(obj.tagName);
});
But my json is
{
"Message": "Success",
"Code": "200",
"Payload": [
{
"year": "2015",
"month": "6",
"fileCount": "985",
"totalFileSize": "2820"
},
{
"year": "2015",
"month": "7",
"fileCount": "15347",
"totalFileSize": "66549"
}
]
}
Now I need to read the data inside the Payload. please help me with
Very simply. Payload is property of the object that you have provided, which can be accessed like this: json.Payload. So you should pass it as the first argument to $.each() method. Here you go:
$.each(json.Payload, function(idx, obj) {
console.log(obj);
});
http://jsfiddle.net/2wxwkxbd/
You can also use
$.map(array,function(obj,index){
console.log(obj)
});
for iterating through an array