Compare two different array elements remove the match elements in node js - javascript

I have two array objects as below:
var arrayOne = [{"Name":"job","SubscriptionGUID":"8ead7edfa460"},{"Name":"TestJobSQL","SubscriptionGUID":"09e7dbff7779"}];
var arrayTwo = [{"UserSubscriptionID":13,"SubscriptionGUID":"8ead7edfa460","Name":"job"}];
var arrayDiff = [];
I need to compare the element Name and remove matched element only show not matching array element in arrayDiff
as per above example My new arrayDiff should be
var arrayDiff = [{"Name":"TestJobSQL"}]; or var arrayDiff = ['TestJobSQL'];
if the arrayTwo is
var arrayTwo = [];
then arrayDiff should return
var arrayDiff = [{"Name":"TestJobSQL"},{"Name":"Job"}]; or var arrayDiff = ['TestJobSQL', 'Job'];


Try this
var arrayOne = [{"Name":"job","SubscriptionGUID":"8ead7edfa460"},{"Name":"TestJobSQL","SubscriptionGUID":"09e7dbff7779"}];
var arrayTwo = [{"UserSubscriptionID":13,"SubscriptionGUID":"8ead7edfa460","Name":"job"}];
var arrayDiff = [];
arrayOne.forEach(function(item, index){
var found = false;
arrayTwo.forEach(function(item1, index1){
if(item.Name == item1.Name) {
found = true;
}
})
if(found == false) {
arrayDiff.push({ Name : item.Name});
}
})
console.log(arrayDiff);


An easy way would be using lodash's and _.differenceBy method.
It let's you make two arrays diff based on the property you want.


var createDiffArray = function(attrName,arrayOne,arrayTwo){
var arrayDif = [];
for (let element of arrayOne){
if (arrayTwo.find( x => x[attrName] === element[attrName]) !== undefined){
arrayDif.push(element[attrName]);
}
}
return arrayDif;
}


var arrayOne = [{"Name":"job","SubscriptionGUID":"8ead7edfa460"},{"Name":"TestJobSQL","SubscriptionGUID":"09e7dbff7779"}];
var arrayTwo = [{"UserSubscriptionID":13,"SubscriptionGUID":"8ead7edfa460","Name":"job"}];
//arrayTwo=[];
var result = [];
arrayOne.forEach(function(e){
if(arrayTwo.length==0){
result.push(e.Name);
}else{
arrayTwo.forEach(function(e2){
if(e.Name!=e2.Name){
result.push(e.Name);
}
})
}
})
console.log(result);

Related

JavaScript splice more than 1 value?

How to splice the string value so the output only become 'LA1','LA4'. I tried the method below but it still gave me string_2 output.
var string_1 = 'LA2,LA3'
var string_2 = "LA1,LA2,LA3,LA4";
var unique_1 = string_1.split(',');
var unique_2 = string_2.split(',');
const index = unique_2.indexOf(unique_1);
if (index > -1) {
unique_2.splice(index, 1);
}
console.log(unique_2);

Instead of using splice() You can filter() with includes().
var string_1 = 'LA2,LA3'
var string_2 = "LA1,LA2,LA3,LA4";
var unique_1 = string_1.split(',');
var unique_2 = string_2.split(',');
var filtered = unique_2.filter(s => !unique_1.includes(s))
console.log(filtered);
If your lists are very large, you might want to use something other than an array with includes() such as a Set that offers constant time lookups.

Array.prototype.indexOf() only finds one element and can not find an array.
To get the expected value, you can do as follows.
var string_1 = 'LA2,LA3'
var string_2 = "LA1,LA2,LA3,LA4";
var unique_1 = string_1.split(',');
var unique_2 = string_2.split(',');
unique_2 = unique_2.filter(item => !unique_1.includes(item));
console.log(unique_2);

using reduce:
var string_1 = 'LA2,LA3'
var string_2 = "LA1,LA2,LA3,LA4";
var unique_1 = string_1.split(',');
var unique_2 = string_2.split(',');
const result = unique_2.reduce((acc, item) => {
!string_1.includes(item) && acc.push(item)
return acc
}, [])
console.log(result)

How to search item using key in object and update that value into the array?

var replaceArr = ['A','J','Q',10,2];
var originalArr = [{A:0},{2:1},{3:2},{4:3},{5:4},{6:5},{10:9},{J:10},{Q:11},{K:12}];
As per the snippet I have two array:
replaceArr and originalArr
I want to compare the replaceArr with the originalArr and get the key value from there and replace into the replaceArr.
Means after replacing the replaceArr would be == [0,10,11,9,1]
In Advanced Thanks..

you can simple use map and find from array prototype
var replaceArr = ["A", "J","Q",10,2]
var originalArr = [{A:0},{2:1},{3:2},{4:3},{5:4},{6:5},{10:9},{J:10},{Q:11},{K:12}];
replaceArr = replaceArr.map(v => originalArr.find(obj => obj[v] !== undefined)[v]);
console.log(replaceArr);

You can club all the different objects in originalArr and then search for replaceArr values in it like below
var replaceArr = ['A','J','Q',10,2]
var originalArr = [{A:0},{2:1},{3:2},{4:3},{5:4},{6:5},{10:9},{J:10},{Q:11},{K:12}]
let arrWithOneObject = Object.assign(...originalArr)
let result = replaceArr.map(d => arrWithOneObject[d])
console.log(result)

You can use javascript array foreach function
originalArr.forEach((val) => {
var replaceIndex = replaceArr.indexOf(Object.keys(val)[0]);
if (replaceIndex >= 0) {
replaceArr[replaceIndex] = val[Object.keys(val)[0]];
}
});

var replaceArr = ['A','J','Q','10','2']
var originalArr = [{A:0},{2:1},{3:2},{4:3},{5:4},{6:5},{10:9},{J:10},{Q:11},{K:12}]
originalArr.forEach((item)=>{
let property = Object.keys(item)[0];
let indexOfproperty = replaceArr.indexOf(property);
if(indexOfproperty !== -1){
replaceArr[indexOfproperty] = item[property]
}
})
console.log(replaceArr)

Remove duplicates from string using jquery?

How i Remove duplicates from my string
var string="1,2,3,2,4,5,4,5,6,7,6";
But i want like this
var string="1,2,3,4,5,6,7";

Yes you can do it easily, Here is the working example
data = "1,2,3,2,4,5,4,5,6,7,6";
arr = $.unique(data.split(','));
data = arr.join(",");
console.log(data);

Create the following prototype and use it to remove duplicates from any array.
Array.prototype.unique = function () {
var arrVal = this;
var uniqueArr = [];
for (var i = arrVal.length; i--; ) {
var val = arrVal[i];
if ($.inArray(val, uniqueArr) === -1) {
uniqueArr.unshift(val);
}
}
return uniqueArr;
}
Ex:
var str = "1,6,7,7,8,9";
var array1 = str.split(',');
var array1 = array1.unique();
console.log(array1); // [1,6,7,8,9]
str = array1.join();

Use the following to push unique values into a new array.
var names = [1,2,2,3,4,5,6];
var newNames = [];
$.each(names, function(index, value) {
if($.inArray(value, newNames) === -1)
newNames.push(value);
});

Split an array cause an error: not a function

I want to split an array that already have been split.
var string = '2016-08-08,63|2016-08-07,67|2016-08-06,64|2016-08-05,53|2016-08-04,63';
var array_dt = string.split(',');
var array_s = array_dt.split('|');
console.log(array_s);
That code returns TypeError: array_dt.split is not a function.
I'm guessing that split() can not split an array. Have I wrong?
Here's how I want it to look like. For array_dt: 2016-08-08,2016-08-07,2016-08-06,2016-08-05,2016-08-04. For array_s: 63,67,64,53,63. I will use both variables to a chart (line) so I can print out the dates for the numbers. My code is just as example!
How can I accomplish this?
Demo

If you want to split on both characters, just use a regular expression
var string = '2016-08-08,63|2016-08-07,67|2016-08-06,64|2016-08-05,53|2016-08-04,63';
var array_dt = string.split(/[,|]/);
console.log(array_dt)
This will give you an array with alternating values, if you wanted to split it up you can do
var string = '2016-08-08,63|2016-08-07,67|2016-08-06,64|2016-08-05,53|2016-08-04,63';
var array_dt = string.split(/[,|]/);
var array1 = array_dt.filter( (x,i) => (i%2===0));
var array2 = array_dt.filter( (x,i) => (i%2!==0));
console.log(array1, array2)
Or if you want to do everything in one go, you could reduce the values to an object
var string = '2016-08-08,63|2016-08-07,67|2016-08-06,64|2016-08-05,53|2016-08-04,63';
var array = string.split(/[,|]/).reduce(function(a,b,i) {
return a[i%2===0 ? 'dates' : 'numbers'].push(b), a;
}, {numbers:[], dates:[]});
console.log(array)
If performance is important, you'd revert to old-school loops, and two arrays
var string = '2016-08-08,63|2016-08-07,67|2016-08-06,64|2016-08-05,53|2016-08-04,63';
var array = string.split(/[,|]/);
var array1 = [];
var array2 = [];
for (var i = array.length; i--;) {
if (i % 2 === 0) {
array1.push(array[i]);
} else {
array2.push(array[i]);
}
}
console.log(array1, array2)

var string = '2016-08-08,63|2016-08-07,67|2016-08-06,64|2016-08-05,53|2016-08-04,63';
var array_dt = [];
var array_s = [];
string.split('|').forEach(function(el){
var temp = el.split(",");
array_dt.push(temp[0]);
array_s.push(temp[1]);
});
console.log(array_dt);
console.log(array_s);

Just do it one step at a time - split by pipes first, leaving you with items that look like 2016-08-08,63. Then for each one of those, split by comma, and insert the values into your two output arrays.
var string = '2016-08-08,63|2016-08-07,67|2016-08-06,64|2016-08-05,53|2016-08-04,63';
var arr = string.split("|");
var array_dt = [];
var array_s = [];
arr.forEach(function(item) {
var x = item.split(",");
array_dt.push(x[0]);
array_s.push(x[1]);
});

array object manipulation to create new object

var actual = [
{"country":"UK","month":"JAN","SR":"John P","AC":"24","PR":"2","TR":1240},
{"country":"AUSTRIA","month":"JAN","SR":"Brad P","AC":"64","PR":"12","TR":1700},
{"country":"ITALY","month":"JAN","SR":"Gim P","AC":"21","PR":"5","TR":900},
{"country":"UK","month":"FEB","SR":"John P","AC":"14","PR":"4","TR":540},
{"country":"AUSTRIA","month":"FEB","SR":"Brad P","AC":"24","PR":"12","TR":1700},
{"country":"ITALY","month":"FEB","SR":"Gim P","AC":"22","PR":"3","TR":600},
{"country":"UK","month":"MAR","SR":"John P","AC":"56","PR":"2","TR":1440},
{"country":"AUSTRIA","month":"MAR","SR":"Brad P","AC":"24","PR":"12","TR":700},
{"country":"ITALY","month":"MAR","SR":"Gim P","AC":"51","PR":"5","TR":200}
];
var expect = [
{month:"JAN",val: {"UK":"24","AUSTRIA":"64","ITALY":"21"}},
{month:"FEB",val: {"UK":"14","AUSTRIA":"24","ITALY":"22"}},
{month:"MAR",val: {"UK":"56","AUSTRIA":"24","ITALY":"51"}}
];
I have array of objects which i need to reshape for one other work. need some manipulation which will convert by one function. I have created plunker https://jsbin.com/himawakaju/edit?html,js,console,output
Main factors are Month, Country and its "AC" value.

Loop through, make an object and than loop through to make your array
var actual = [
{"country":"UK","month":"JAN","SR":"John P","AC":"24","PR":"2","TR":1240},
{"country":"AUSTRIA","month":"JAN","SR":"Brad P","AC":"64","PR":"12","TR":1700},
{"country":"ITALY","month":"JAN","SR":"Gim P","AC":"21","PR":"5","TR":900},
{"country":"UK","month":"FEB","SR":"John P","AC":"14","PR":"4","TR":540},
{"country":"AUSTRIA","month":"FEB","SR":"Brad P","AC":"24","PR":"12","TR":1700},
{"country":"ITALY","month":"FEB","SR":"Gim P","AC":"22","PR":"3","TR":600},
{"country":"UK","month":"MAR","SR":"John P","AC":"56","PR":"2","TR":1440},
{"country":"AUSTRIA","month":"MAR","SR":"Brad P","AC":"24","PR":"12","TR":700},
{"country":"ITALY","month":"MAR","SR":"Gim P","AC":"51","PR":"5","TR":200}
];
var outTemp = {};
actual.forEach(function(obj){ //loop through array
//see if we saw the month already, if not create it
if(!outTemp[obj.month]) outTemp[obj.month] = { month : obj.month, val: {} };
outTemp[obj.month].val[obj.country] = obj.AC; //add the country with value
});
var expected = []; //convert the object to the array format that was expected
for (var p in outTemp) {
expected.push(outTemp[p]);
}
console.log(expected);

Iterate through array and create new list
var actual = [
{"country":"UK","month":"JAN","SR":"John P","AC":"24","PR":"2","TR":1240},
{"country":"AUSTRIA","month":"JAN","SR":"Brad P","AC":"64","PR":"12","TR":1700},
{"country":"ITALY","month":"JAN","SR":"Gim P","AC":"21","PR":"5","TR":900},
{"country":"UK","month":"FEB","SR":"John P","AC":"14","PR":"4","TR":540},
{"country":"AUSTRIA","month":"FEB","SR":"Brad P","AC":"24","PR":"12","TR":1700},
{"country":"ITALY","month":"FEB","SR":"Gim P","AC":"22","PR":"3","TR":600},
{"country":"UK","month":"MAR","SR":"John P","AC":"56","PR":"2","TR":1440},
{"country":"AUSTRIA","month":"MAR","SR":"Brad P","AC":"24","PR":"12","TR":700},
{"country":"ITALY","month":"MAR","SR":"Gim P","AC":"51","PR":"5","TR":200}
];
var newList =[], val;
for(var i=0; i < actual.length; i+=3){
val = {};
val[actual[i].country] = actual[i]["AC"];
val[actual[i+1].country] = actual[i+1]["AC"];
val[actual[i+2].country] = actual[i+2]["AC"];
newList.push({month: actual[i].month, val:val})
}
document.body.innerHTML = JSON.stringify(newList);

This is the correct code... as above solution will help you if there are 3 rows and these will be in same sequnece.
Here is perfect solution :
var actual = [
{"country":"UK","month":"JAN","SR":"John P","AC":"24","PR":"2","TR":1240},
{"country":"AUSTRIA","month":"JAN","SR":"Brad P","AC":"64","PR":"12","TR":1700},
{"country":"ITALY","month":"JAN","SR":"Gim P","AC":"21","PR":"5","TR":900},
{"country":"UK","month":"FEB","SR":"John P","AC":"14","PR":"4","TR":540},
{"country":"AUSTRIA","month":"FEB","SR":"Brad P","AC":"24","PR":"12","TR":1700},
{"country":"ITALY","month":"FEB","SR":"Gim P","AC":"22","PR":"3","TR":600},
{"country":"UK","month":"MAR","SR":"John P","AC":"56","PR":"2","TR":1440},
{"country":"AUSTRIA","month":"MAR","SR":"Brad P","AC":"24","PR":"12","TR":700},
{"country":"ITALY","month":"MAR","SR":"Gim P","AC":"51","PR":"5","TR":200}
];
var tmpArray = [];
var obj =[];
for(var k=0; k<actual.length; k++){
var position = tmpArray.indexOf(actual[k].month);
if(position == -1){
tmpArray.push(actual[k].month);
val = {};
for(var i=0; i<actual.length; i++){
if(actual[i].month == actual[k].month){
val[actual[i].country] = actual[i]["AC"];
}
}
obj.push({month: actual[k].month, val:val});
}
}

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