How do I loop through and add key values to values - javascript

I want to be able to loop through this object and add "key" values to the values so it can be easily used for a project. I'm Webscraping from a Website to get the data I have been able to get the data but I need to format it, here is my code and I'm stuck on what the next step is.
I'm trying to get it to look like this
EXAMPLE
server: "USSouth2"
cost: 100
howmuch: 56
time: 28
Code
let options = {
url: 'https://www.realmeye.com/items/misc/',
headers: {
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.100 Safari/537.36'
}
}
var result = [];
request(options, function(err, resp, html) {
if (!err) {
const $ = cheerio.load(html);
let servers = $('.cheapest-server').attr('data-alternatives');
servers.forEach(function(nexus) {
result.push({
servername: nexus[0],
cost: nexus[1],
howmuch: nexus[2],
time: nexus[3]
})
})
}
})
JSON object (this can change depending on the Website data)
["USSouth2 Nexus",100,56,28],["EUSouth Nexus",100,62,25],["AsiaSouthEast Nexus",100,58,25],["EUNorth2 Nexus",100,64,24],["EUEast Nexus",100,55,24],["USWest2 Nexus",100,73,23],["USMidWest2 Nexus",100,53,21],["USEast2 Nexus",100,98,17],["EUWest Nexus",100,66,11],["EUSouthWest Nexus",100,86,10],["USNorthWest Nexus",100,87,9],["USSouthWest Nexus",100,67,9],["EUWest2 Nexus",100,89,8],["USWest Nexus",100,66,8],["USSouth Nexus",100,54,7],["USMidWest Nexus",100,90,6],["USSouth3 Nexus",100,82,6],["USEast Nexus",100,65,1]]
I'm getting this error
TypeError: servers.forEach is not a function


I've fixed it I forgot to parse the JSON here is the answer by making a new variable
let jsonData = JSON.parse(servers);


Okay, so if you know for sure the four keys will not change, then do something like this.
Create an array with the four keys in order of appearance in a single JSON array value. Use the map method of the array to loop over the array and manipulate each value and the and the reduce method to turn an array into object.
Check out the example below to see what it does.
// Your JSON.
const json = [["USSouth2 Nexus",100,56,28], ["EUSouth Nexus",100,62,25]];
// The four keys of the object. In order of the JSON array.
const keys = ['servername', 'cost', 'howmuch', 'time'];
// Loop over servers and return an object reduces from an array.
const servers = json.map(server =>
server.reduce((acc, cur, i) => {
let key = keys[i];
acc[key]= cur;
return acc;
}, {}));
console.log(servers);


I haev updated the code snippet. please check now.
let servers = [["USSouth2 Nexus",100,56,28],["EUSouth Nexus",100,62,25],["AsiaSouthEast Nexus",100,58,25],["EUNorth2 Nexus",100,64,24],["EUEast Nexus",100,55,24],["USWest2 Nexus",100,73,23],["USMidWest2 Nexus",100,53,21],["USEast2 Nexus",100,98,17],["EUWest Nexus",100,66,11],["EUSouthWest Nexus",100,86,10],["USNorthWest Nexus",100,87,9],["USSouthWest Nexus",100,67,9],["EUWest2 Nexus",100,89,8],["USWest Nexus",100,66,8],["USSouth Nexus",100,54,7],["USMidWest Nexus",100,90,6],["USSouth3 Nexus",100,82,6],["USEast Nexus",100,65,1]];
var result = [];
servers.forEach(function(nexus) {
result.push({
servername: nexus[0],
cost: nexus[1],
howmuch: nexus[2],
time: nexus[3]
});
});
console.log(result);


First of all, you need to check is servers are prsent and it's in form of array anf if so, then loop through the servers and get your data
const servers = $('.cheapest-server').attr('data-alternatives');
if (servers && Array.isArray(servers) && servers.length) {
const result = [];
for (let i = 0; i < servers.lenght; i += 1) {
const entity = servers[i];
const objBuilder = {
servername: entity[0] || null,
cost: entity[1] || null,
howmuch: entity[2] || null,
time: entity[3] || null,
};
result.push(objBuilder);
}
} else {
// Error handling or pass an empty array
}

Related

Updating Json Value with that of another Json

I want to update automatically the value of comments_list with the values in the comments JSON object
const tweet = JSON.stringify({"tweet_id":1,"created_at":"2022-06-28","comments_list":[]})
const comments = JSON.stringify({"tweet_id":1,"commenter_id": 2"commenter_first_name":"tito","commenter_username":"tito_lulu"})
The final output should look like this
{"tweet_id":1,"created_at":"2022-06-28","comments_list":[{"commenter_id": 2"commenter_first_name":"tito","commenter_username":"tito_lulu"}]}

I'd work with those strings in an object form, otherwise string-manipulation could be slow in some cases.
This is by no means the fastest solution but perhaps the idea behind it can be helpful.
const tweet = [{
"tweet_id": 1,
"created_at": "2022-06-28",
"comments_list": []
}]; // There could be many tweet objects so wrap it in an array
const comments = [{
"tweet_id": 1,
"commenter_id": 2,
"commenter_first_name": "tito",
"commenter_username": "tito_lulu"
},
{
"tweet_id": 1,
"commenter_id": 5,
"commenter_first_name": "me-too",
"commenter_username": "me294"
}
]; // Same here, could be many comments right?
let UpdatedTweets = [];
// There are faster ways to do this, but for your question
tweet.forEach((tweet, tweetIndex) => {
// Loop each tweet
let post = tweet;
comments.forEach((comment, commentIndex) => {
if (comment.tweet_id == tweet.tweet_id) {
// we have a match lets combine them
tweet.comments_list.push({
commenter_id: comment.comment_id,
commenter_first_name: comment.commenter_first_name,
commenter_username: comment.commenter_username
});
}
});
UpdatedTweets.push(post);
});
console.log(JSON.stringify(UpdatedTweets));

The general idea is:
Parse the JSON into JS objects
Update the target object with the complementary information
Stringify the target object into JSON (only if you need to, eg. send the data to some other machine)
In your case:
const tweet = JSON.stringify({"tweet_id":1,"created_at":"2022-06-28","comments_list":[]});
const comments = JSON.stringify({"tweet_id":1,"commenter_id": 2,
"commenter_first_name":"tito","commenter_username":"tito_lulu"});
let o_tweet = JSON.parse(tweet)
, o_comments = JSON.parse(comments)
;
if (Array.isArray(comments)) { // Test whether that is a single or multiple comments
comments.forEach( c => { o_tweet.comments_list.push(c); });
} else {
o_tweet.comments_list.push(o_comments);
}
console.log(o_tweet);
// Only if needed:
// let newtweet = JSON.stringify(o_tweet)

How to parse a JSON object with nested arrays in google apps script

I'm having difficulty parsing a JSON string with nested arrays. here is an example of the JSON
var json = {
"id": "123456",
"cost_name":"john",
"line_item":[{
"item_name":"table", "quantity":"1", "properties":[{
"color":"black", "style":"rustic"
}]},
{
"item_name":"chair", "quantity":"3", "properties":[{
"color":"white", "style":"modern"
}]}],
"address":"123_street"
}
I need to get the item_name and quantity of each line_item and I also need the color and style of each
I'm receiving this JSON from a webhook so the order is never the same.
ADDED CONTEXT: (#Taineke's request)
I'm trying to write this to a google sheet with apps script here is my code.
function doPost(e) {
var ss = SpreadsheetApp.getActiveSheet();
var data = JSON.parse(e.postData.contents);
//extract data here
var I= item_name;
var Q = quantity;
var C = color;
var S = style;
ss.appendRow([I,Q,C,S])
}
HERE IS UPDATED e.postData.contents (that #Tanaike) requested from a test webhook
{"id":3175309607101,"email":"sample#sample.com","closed_at":null,"created_at":"2021-01-05T21:35:06-05:00","updated_at":"2021-01-05T21:35:08-05:00","number":1586,"note":"","token":"3491883c672f110eaab82f8dd8080052","gateway":null,"test":false,"total_price":"0.00","subtotal_price":"0.00","total_weight":0,"total_tax":"0.00","taxes_included":false,"currency":"USD","financial_status":"paid","confirmed":true,"total_discounts":"18.00","total_line_items_price":"18.00","cart_token":"a3c9cb049e2f631a8393cf37547623e2","buyer_accepts_marketing":false,"name":"#2586","referring_site":"","landing_site":"\/","cancelled_at":null,"cancel_reason":null,"total_price_usd":"0.00","checkout_token":"11d27a9399b514cb6ba246a3fffc7b23","reference":null,"user_id":null,"location_id":null,"source_identifier":null,"source_url":null,"processed_at":"2021-01-05T21:35:02-05:00","device_id":null,"phone":null,"customer_locale":"en","app_id":580111,"browser_ip":"172.58.238.224","client_details":{"accept_language":"en-US,en;q=0.9","browser_height":657,"browser_ip":"172.58.238.224","browser_width":1349,"session_hash":null,"user_agent":"Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/87.0.4280.88 Safari\/537.36"},"landing_site_ref":null,"order_number":2586,"discount_applications":[{"type":"discount_code","value":"100.0","value_type":"percentage","allocation_method":"across","target_selection":"all","target_type":"line_item","code":"adina"}],"discount_codes":[{"code":"adina","amount":"18.00","type":"percentage"}],"note_attributes":[{"name":"Checkout-Method","value":"pickup"},{"name":"Pickup-Location-Id","value":"105225"},{"name":"Pickup-Location-Company","value":"Evergreen Monsey"},{"name":"Pickup-Location-Address-Line-1","value":"59 NY-59"},{"name":"Pickup-Location-City","value":"Monsey"},{"name":"Pickup-Location-Region","value":"New York"},{"name":"Pickup-Location-Postal-Code","value":"10952"},{"name":"Pickup-Location-Country","value":"United States"}],"payment_gateway_names":[],"processing_method":"free","checkout_id":18478127907005,"source_name":"web","fulfillment_status":null,"tax_lines":[],"tags":"","contact_email":"sample#sample.com","order_status_url":"https:\/\/labelitlabels.com\/26375225421\/orders\/3491883c672f110eaab82f8dd8080052\/authenticate?key=46788d0320dc9961fed8c81630484581","presentment_currency":"USD","total_line_items_price_set":{"shop_money":{"amount":"18.00","currency_code":"USD"},"presentment_money":{"amount":"18.00","currency_code":"USD"}},"total_discounts_set":{"shop_money":{"amount":"18.00","currency_code":"USD"},"presentment_money":{"amount":"18.00","currency_code":"USD"}},"total_shipping_price_set":{"shop_money":{"amount":"0.00","currency_code":"USD"},"presentment_money":{"amount":"0.00","currency_code":"USD"}},"subtotal_price_set":{"shop_money":{"amount":"0.00","currency_code":"USD"},"presentment_money":{"amount":"0.00","currency_code":"USD"}},"total_price_set":{"shop_money":{"amount":"0.00","currency_code":"USD"},"presentment_money":{"amount":"0.00","currency_code":"USD"}},"total_tax_set":{"shop_money":{"amount":"0.00","currency_code":"USD"},"presentment_money":{"amount":"0.00","currency_code":"USD"}},"line_items":[{"id":9102143324349,"variant_id":31929214402637,"title":"Bold Monogram","quantity":30,"sku":"L21","variant_title":"2\"*2\" $0.60","vendor":"Label It Labels","fulfillment_service":"manual","product_id":4374255960141,"requires_shipping":true,"taxable":true,"gift_card":false,"name":"Bold Monogram - 2\"*2\" $0.60","variant_inventory_management":null,"properties":[{"name":"Shape","value":"Square Shape"},{"name":"Choose Background","value":"#030000"},{"name":"Initial","value":"D"},{"name":"_font size Initial","value":"300.00"},{"name":"Choose Text Color","value":"White"},{"name":"Spell Name","value":"DREW FAMILY"},{"name":"_font size Spell Name","value":"33.00"},{"name":"Additional Text (optional)","value":"dairy cholov yisroel"},{"name":"_font size Additional Text (optional)","value":"12.00"},{"name":"_6","value":"PROOF"},{"name":"_Preview","value":"https:\/\/cdn.shopify.com\/s\/files\/1\/0263\/7522\/5421\/uploads\/23b9fb4ba8eb01b7ff717d39d9672c2d.png?format=png\u0026png"},{"name":"_pdf","value":"https:\/\/cdn.shopify.com\/s\/files\/1\/0263\/7522\/5421\/uploads\/5c0c23d462aa998831b0f79aabd0b9eb.pdf"},{"name":"_pplr_preview","value":"_Preview"},{"name":"_ZapietId","value":"a3c9cb049e2f631a8393cf37547623e2"}],"product_exists":true,"fulfillable_quantity":30,"grams":0,"price":"0.60","total_discount":"0.00","fulfillment_status":null,"price_set":{"shop_money":{"amount":"0.60","currency_code":"USD"},"presentment_money":{"amount":"0.60","currency_code":"USD"}},"total_discount_set":{"shop_money":{"amount":"0.00","currency_code":"USD"},"presentment_money":{"amount":"0.00","currency_code":"USD"}},"discount_allocations":[{"amount":"18.00","discount_application_index":0,"amount_set":{"shop_money":{"amount":"18.00","currency_code":"USD"},"presentment_money":{"amount":"18.00","currency_code":"USD"}}}],"duties":[],"admin_graphql_api_id":"gid:\/\/shopify\/LineItem\/9102143324349","tax_lines":[{"title":"NJ State Tax","price":"0.00","rate":0.06625,"price_set":{"shop_money":{"amount":"0.00","currency_code":"USD"},"presentment_money":{"amount":"0.00","currency_code":"USD"}}}],"origin_location":{"id":1809674076237,"country_code":"US","province_code":"NJ","name":"Label It Labels.","address1":"155 Pressburg Ln","address2":"","city":"Lakewood","zip":"08701"}}],"fulfillments":[],"refunds":[],"total_tip_received":"0.0","original_total_duties_set":null,"current_total_duties_set":null,"admin_graphql_api_id":"gid:\/\/shopify\/Order\/3175309607101","shipping_lines":[{"id":2654542987453,"title":"Pick up in Lakewood only","price":"0.00","code":"Pick up in Lakewood only","source":"shopify","phone":null,"requested_fulfillment_service_id":null,"delivery_category":null,"carrier_identifier":null,"discounted_price":"0.00","price_set":{"shop_money":{"amount":"0.00","currency_code":"USD"},"presentment_money":{"amount":"0.00","currency_code":"USD"}},"discounted_price_set":{"shop_money":{"amount":"0.00","currency_code":"USD"},"presentment_money":{"amount":"0.00","currency_code":"USD"}},"discount_allocations":[],"tax_lines":[]}],"billing_address":{"first_name":"John","address1":"123 street","phone":"(234) 567-8901","city":"Any City","zip":"08701","province":"New Jersey","country":"United States","last_name":"Smith","address2":"","company":null,"latitude":40.0963651,"longitude":-74.2067389,"name":"John Smith","country_code":"US","province_code":"NJ"},"shipping_address":{"first_name":"John","address1":"123 street","phone":"(234) 567-8901","city":"Any City","zip":"08701","province":"New Jersey","country":"United States","last_name":"Smith","address2":"","company":null,"latitude":40.0963651,"longitude":-74.2067389,"name":"John Smith","country_code":"US","province_code":"NJ"},"customer":{"id":4602994983101,"email":"sample#sample.com","accepts_marketing":false,"created_at":"2021-01-05T21:31:39-05:00","updated_at":"2021-01-05T21:35:07-05:00","first_name":"John","last_name":"Smith","orders_count":1,"state":"disabled","total_spent":"0.00","last_order_id":3175309607101,"note":null,"verified_email":true,"multipass_identifier":null,"tax_exempt":false,"phone":null,"tags":"","last_order_name":"#2586","currency":"USD","accepts_marketing_updated_at":"2021-01-05T21:31:39-05:00","marketing_opt_in_level":null,"admin_graphql_api_id":"gid:\/\/shopify\/Customer\/4602994983101","default_address":{"id":5617895145661,"customer_id":4602994983101,"first_name":"John","last_name":"Smith","company":null,"address1":"123 street","address2":"","city":"Any City","province":"New Jersey","country":"United States","zip":"08701","phone":"(234) 567-8901","name":"John Smith","province_code":"NJ","country_code":"US","country_name":"United States","default":true}}}
HERE IS MY LATEST CODE. It works but maybe can be cleaner and faster. which I'm having issues with Shopify's 5 second wait time to refiring if no response is recieved.
function doPost(e){
var data = JSON.parse(e.postData.contents);
var ss = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('Sheet1');
var l = data.line_items.length;
for (var i=0;i<l;i++){
var prop = data.line_items[i].properties;
if (prop.length>0){
var pdf = prop.find(function(x) {if(x.name == "_pdf") return x});
if (!pdf){pdf = "Prop not found";}else{pdf = pdf.value};
var shape = prop.find(function(x) {if(x.name.toLowerCase() == "shape") return x});
if (!shape){shape = "Prop not found";}else{shape = shape.value};
}else{
var pdf = "N/A"
var shape = "N/A"
};
var count = "Item "+ (i+1) + " of " + l;
var qty = data.line_items[i].quantity;
var title = data.line_items[i].title;
var id = data.id.toString();
var email = data.email;
var totalPrice = data.total_price;
var discounts = data.total_discounts;
var acceptAds = data.buyer_accepts_marketing;
var orderStatus = data.order_status_url;
var addr = data.shipping_address.address1;
var city = data.shipping_address.city;
var state = data.shipping_address.province;
var zip = data.shipping_address.zip;
var phone = data.shipping_address.phone;
var firstName = data.shipping_address.first_name;
var lastName = data.shipping_address.last_name;
var orderNum = data.name;
var d = new Date(data.created_at).toLocaleString();
ss.appendRow([d,orderNum,email,count,title,shape,qty,totalPrice,discounts,pdf,firstName,lastName,addr,city,state,zip,phone,orderStatus]);
if (pdf != "N/A"){
if (pdf != "Prop not found"){
var res = UrlFetchApp.fetch(pdf);
var blob = res.getBlob();
var createFile = DriveApp.getFolderById('xxxxxxxxxxxxxxxx-').createFile(blob.getAs('application/pdf'));
var fileName = orderNum + " " + qty;
createFile.setName(fileName);
}}
};
}

I thought that from your title, in your json, = might be : in the value. If it's so, how about the following sample script?
Sample script:
var json = {
"id": 123456,
"cost_name": "john",
"line_item": [
{
"item_name": "table",
"quantity": 1,
"properties": [
{
"color": "black",
"style": "rustic"
}
]
},
{
"item_name": "chair",
"quantity": 3,
"properties": [
{
"color": "white",
"style": "modern"
}
]
}
],
"address": "123_street"
};
const res = json.line_item.map(({item_name, quantity, properties: [{color, style}]}) => [item_name, quantity, color, style]);
console.log(res)
Note:
Unfortunately, I cannot understand about the result format you expect. So in above sample script, each values are put in an array. If above result format is not the result you expected, can you provide the sample output values? By this, I would like to modify it.
In this case, please enable V8 runtime at the script editor.
Reference:
map()
Added 1:
From your updated question, I understood that data is json in your above script and you want to append the values of item_name, quantity, color, style to the active sheet in Google Spreadsheet. For this, how about the following modification?
Modified script:
function doPost(e) {
var data = JSON.parse(e.postData.contents);
var res = data.line_item.map(({item_name, quantity, properties: [{color, style}]}) => [item_name, quantity, color, style]);
var sheet = SpreadsheetApp.getActiveSheet();
sheet.getRange(sheet.getLastRow() + 1, 1, res.length, res[0].length).setValues(res);
}
Note:
It seems that you are using Web Apps. In this case, when the script of Web Apps is modified, please redeploy the Web Apps as new version. By this, the latest script is reflected to the Web Apps. Please be carful this.
Added 2:
From your updated question, it was found that your additional value is different from your initial question. And, I understood that you wanted to retrieve the values of Shape and _pdf in properties from the added value. So in this case, I would like to modify the script as follows.
Sample script:
In this case, data is your added values. Please be careful this.
function doPost(e) {
var data = JSON.parse(e.postData.contents);
const checkNames = ["Shape", "_pdf"];
const res = data.line_items.reduce((ar, {properties}) => {
if (properties) {
properties.forEach(({name, value}) => {
if (checkNames.includes(name)) ar.push([name, value]);
});
}
return ar;
}, []);
if (res.length > 0) {
var sheet = SpreadsheetApp.getActiveSheet();
sheet.getRange(sheet.getLastRow() + 1, 1, res.length, res[0].length).setValues(res);
}
}
In this script, when the values of properties are not existing, setValues is not run. By this, no error occurs.
Note:
In this script, your added value is used. So when the structure of value is different, the script might not be able to be used. So please be careful this.
It seems that you are using Web Apps. In this case, when the script of Web Apps is modified, please redeploy the Web Apps as new version. By this, the latest script is reflected to the Web Apps. Please be carful this.

Function returning object instead of Array, unable to .Map

I'm parsing an order feed to identify duplicate items bought and group them with a quantity for upload. However, when I try to map the resulting array, it's showing [object Object], which makes me think something's converting the return into an object rather than an array.
The function is as follows:
function compressedOrder (original) {
var compressed = [];
// make a copy of the input array
// first loop goes over every element
for (var i = 0; i < original.length; i++) {
var myCount = 1;
var a = new Object();
// loop over every element in the copy and see if it's the same
for (var w = i+1; w < original.length; w++) {
if (original[w] && original[i]) {
if (original[i].sku == original[w].sku) {
// increase amount of times duplicate is found
myCount++;
delete original[w];
}
}
}
if (original[i]) {
a.sku = original[i].sku;
a.price = original[i].price;
a.qtty = myCount;
compressed.push(a);
}
}
return compressed;
}
And the JS code calling that function is:
contents: compressedOrder(item.lineItems).map(indiv => ({
"id": indiv.sku,
"price": indiv.price,
"quantity": indiv.qtty
}))
The result is:
contents: [ [Object], [Object], [Object], [Object] ]
When I JSON.stringify() the output, I can see that it's pulling the correct info from the function, but I can't figure out how to get the calling function to pull it as an array that can then be mapped rather than as an object.
The correct output, which sits within a much larger feed that gets uploaded, should look like this:
contents:
[{"id":"sku1","price":17.50,"quantity":2},{"id":"sku2","price":27.30,"quantity":3}]
{It's probably something dead simple and obvious, but I've been breaking my head over this (much larger) programme till 4am this morning, so my head's probably not in the right place}

Turns out the code was correct all along, but I was running into a limitation of the console itself. I was able to verify this by simply working with the hard-coded values, and then querying the nested array separately.
Thanks anyway for your help and input everyone.

contents: compressedOrder(item.lineItems).map(indiv => ({
"id": indiv.sku,
"price": indiv.price,
"quantity": indiv.qtty
}))
In the code above the compressedOrder fucntion returns an array of objects where each object has sku, price and qtty attribute.
Further you are using a map on this array and returning an object again which has attributes id, price and quantity.
What do you expect from this.

Not sure what exactly solution you need but I've read your question and the comments, It looks like you need array of arrays as response.
So If I've understood your requirement correctly and you could use lodash then following piece of code might help you:
const _ = require('lodash');
const resp = [{key1:"value1"}, {key2:"value2"}].map(t => _.pairs(t));
console.log(resp);
P.S. It is assumed that compressedOrder response looks like array of objects.

How can I merge individual object values?

I have the following problem:
I want to read out my table names from a SQL database and then make a comparison as to whether it already exists. I know there is the formula IF EXISTS ... but IF doesn't work .. So here's my previous variant:
First i extracted everything before the filename.csv (C:\Users\Frederic\Desktop\Drag&Drop...) and then the ".csv". Do not be surprised why 51;) The filename is so long
var filename = filePath.slice(51);
var richtigername = filename.replace(".csv","").toString();
console.log(richtigername)
here the result in the console:
for example: fxbewertung
As a second step I let me show the file names:
connection.query('Show tables from datein', function(err, datein) {
let string = JSON.stringify(datein);
let json = JSON.parse(string);
console.log(json)
here the result in the console:
[ { Tables_in_datein: 'fxbewertung' },
{ Tables_in_datein: 'kontoauszug' },
{ Tables_in_datein: 'lsreport' } ]
Furthermore, I extracted the values (name of the SQL tables):
for (var k = 0; k < json.length; k++) {
var werte = Object.values(json[k])
console.log(werte)
};
here the result in the console:
[ 'fxbewertung' ]
[ 'kontoauszug' ]
[ 'lsreport' ]
Now I don't know how i can take the comparison that for example for the file fxbewertung exist a database ('fxbewertung').
My consideration is to somehow browse the individual arrays .. or merge and then browse. At the end should come out true or false
P.S .: it may well be complicated yet but I'm not a real programmer or something;)
Best regards
Frederic

You can use some() method to check if a table exists for that filename.
var tableExists = tables.some(item => item['Tables_in_datein'] === filename);
Live Example:
var tables = [{
Tables_in_datein: 'fxbewertung'
},
{
Tables_in_datein: 'kontoauszug'
},
{
Tables_in_datein: 'lsreport'
}
];
var filename = 'fxbewertung';
var tableExists = tables.some(item => item['Tables_in_datein'] === filename);
if (!tableExists) {
// Table not found for filename.
} else {
// Table found. Do something.
}

Assuming you finished executing your query and stored the data as following:
const queryResult = [ { Tables_in_datein: 'fxbewertung' },
{ Tables_in_datein: 'kontoauszug' },
{ Tables_in_datein: 'lsreport' } ]
You'll then need to map this array to extract the values and store them in a single array like so:
const values = queryResult.map(e=>e[Object.keys(e)[0]]) // ["fxbewertung", "kontoauszug", "lsreport"]
Since you're looking for a true/false result by giving a file name, you'll need to use indexOf to achieve that.
const valueExists = filename => values.indexOf(filename) !== -1
After that execute valueExists with the file name you're looking for:
valueExists("kontoauszug"); // true
valueExists("potato"); // false
Hope this helps!

An efficient solution could be to use Array.prototype.find(). Where it would return from the moment it finds a truthy value and would not iterate till the end (unless the match exists at the end).
Demo Code:
const tablesArr = [
{
Tables_in_datein: "fxbewertung"
},
{
Tables_in_datein: "kontoauszug"
},
{
Tables_in_datein: "lsreport"
}
];
const tabletoFind = "fxbewertung";
const tableFound = tablesArr.find(item => item["Tables_in_datein"] === tabletoFind) ? true: false;
console.log(tableFound);
if(tableFound){
//*yes table found*/
}else{
///*nope table not found*/
}

Pouchdb join / link documents

I have pouchdb/couchbase data with equipment that has user assigned to them.
Equipment with _id and in the equipment doc there is a checkedOutBy with the user._id as the value. Within the employee object there is user.name. When I get the equipment objects how do I also get the user.name and display with the equipment.
I have searched and read about map/reduce that uses emit and do not grasp the idea. My code that i wrote from what i learned is:
by the way I am also using Angularjs.
field = "eq::"
this.getAllEquip = function(field){
function map(doc) {
if (doc.checkedOutBy !== undefined) {
emit(doc.checkedOutBy, {empName : doc.name});
}
}
var result = database.query(map, {include_docs: true,
attachments: true,
startkey: field,
endkey: field + '\uffff'})
.catch(function (err) {
//error stuff here
});
return result
};
I don't see where the two docs would get together. What am i missing? My result is empty.
The equipment json looks like:
{checkedOutBy: "us::10015", description: "3P Microsoft Surface w/stylus & power cord", equipId: "SUR1501", purchaseDate: "", rCost: 1000, id:"eq::10001"}
Emlpoyee json:
{"firstname":"Joe","gender":"male","lastname":"Blow","status":"active","title":"office","type":"userInfo","_id":"us::10015","_rev":"2-95e9f34784094104ad24bbf2894ae786"}
Thank you for your help.

Something like this should work, if I understood the question correctly:
//Sample Array of Objects with Equipment
var arr1=[{checkedout:"abc1",desc:"item1",id:1},
{checkedout:"abc2",desc:"item2",id:2},
{checkedout:"abc3",desc:"item3",id:3},
{checkedout:"abc1",desc:"item1",id:4},
{checkedout:"abc4",desc:"item3",id:5},
{checkedout:"abc6",desc:"item3",id:6}];
//Sample array of objects with Employee - the "id" in arr2 matches with "checkout" in arr1
var arr2=[{name:"john",id:"abc1"},
{name:"jack",id:"abc2"},
{name:"alice",id:"abc3"},
{name:"james",id:"abc4"}];
var result = []; //final result array
//loop through equipment array arr1
arr1.forEach(function(obj) {
var tempObj = obj;
var checkedout_id=obj.checkedout;
//do array.find which will return the first element in the array which satisfies the given function. This is absed on the assumption that that the id is unique for employee and there wont bwe multiple employees with same id (which is the "checkedout" field in equipment. If the employee is not found, it will return undefined.
var foundname = arr2.find(function(obj) {
if (obj.id == checkedout_id)
return obj.name
})
//Create the object to be inserted into the final array by adding a new key called "name", based on the result of above find function
if (foundname != undefined) {
tempObj.name=foundname.name
}
else {
tempObj.name = "Not found";
}
result.push(tempObj);
})

This is my Pouchdb solution, thank you Vijay for leading me to this solution.
First I get all my equipment. Then I use Vijay's idea to loop through the array and add the name to the object and build new array. I found there is a need to go into the .doc. part of the object as in obj.doc.checkedOutBy and tempObj.doc.name to get the job done.
$pouchDB.getAllDocs('eq::').then(function(udata){
var result = [];
//loop through equipment array
udata.rows.forEach(function(obj) {
var tempObj = obj;
var checkedout_id=obj.doc.checkedOutBy;
if (checkedout_id != undefined) {
$pouchDB.get(checkedout_id).then(function(emp){
return emp.firstname + " " + emp.lastname
}).then(function(name){
tempObj.doc.name = name;
});
}
result.push(tempObj);
})
in my service I have:
this.get = function(documentId) {
return database.get(documentId);
};
and:
this.getAllDocs = function(field){
return database.allDocs({
include_docs: true,
attachments: true,
startkey: field,
endkey: field + '\uffff'});
};

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