I have two arrays
const originalArray= ["form1","form2","form3","form4","form5"];
const modifiedArray = ["form2","additionForm1","form1","form3","additionForm2"];
expected results is,
let testScript = [form1 is moved to position 2,
form2 is moved to position 0,
form3 is moved to position 3,
from 4 is deleted position is 3]
form5 is deleted position is 4,
additional1 added to position 1
additional2 added to position 4
]
I can get deleted data using follwing code, But when try to get moved data and position changed data I faced some problem.
this is what I tried,
function testFunc(){
const originalArray = ["form1","form2","form3","form4","form5"];
const modifiedArray= ["form2","additionForm1","form1","form3","additionForm2"];
let flag = false;
let result = [];
originalArray.forEach((Nelement, Nindex) => {
modifiedArray.forEach((Telement, Tindex) => {
if(Nelement === Telement){ //check originalArray data containg the modified array
flag = true;
//return false;
}
if(flag === true && Nindex !== Tindex){ //try to get moved data
result.push(Nelement+" change the position to "+ Tindex )
}
})
if(flag !== true){ //if original array data doesn't include in modified array
result.push(Nelement+" removed from "+ Nindex + " position" )
}
flag = false
})
}
This is an interesting question. This should work and the result is
"form1 is moved to position 2",
"form2 is moved to position 0",
"form3 is moved to position 3",
"form4 is deleted position is 3",
"form5 is deleted position is 4",
"additionForm1 added to position 1",
"additionForm2 added to position 4"
I use another loop to display the added items to the array
const originalArray = ["form1","form2","form3","form4","form5"];
const modifiedArray= ["form2","additionForm1","form1","form3","additionForm2"];
let flag = false;
let result = []
function testFunc(){
//Find added items between the two lists
originalArray.forEach((Nelement, Nindex) => {
modifiedArray.forEach((Telement, Tindex) => {
if(Nelement === Telement){ //check originalArray data containg the modified array
flag = true;
if(Nindex !== Tindex)//try to get moved data
result. push(Nelement+" is moved to position "+ Tindex )
}
})
if(!flag){ //if original array data doesn't include in modified array
result.push(Nelement+" is deleted position is "+ Nindex)
}
flag = false
})
//check added item
let arr = modifiedArray.filter(x => !originalArray.includes(x));
for(let j in arr)
result.push(arr[j]+" added to position "+modifiedArray.indexOf(arr[j]))
console.log(result)
}
testFunc()
just replace following snippet
if(flag === true && Nindex !== Tindex){ //try to get moved data
result.push(Nelement+" change the position to "+ Tindex )
}
to
if(Nelement === Telement && Nindex !== Tindex){ //try to get moved data
result.push(Nelement+" change the position to "+ Tindex )
}
This is because flag is not getting unset in the second loop.
complete solution below.
function testFunc(){
const originalArray = ["form1","form2","form3","form4","form5"];
const modifiedArray= ["form2","additionForm1","form1","form3","additionForm2"];
let flag = false;
let result = [];
originalArray.forEach((Nelement, Nindex) => {
modifiedArray.forEach((Telement, Tindex) => {
if(Nelement === Telement){ //check originalArray data containg the modified array
flag = true;
//return false;
}
if(Nelement === Telement && Nindex !== Tindex){ //try to get moved data
result.push(Nelement+" change the position to "+ Tindex )
}
})
if(flag !== true){ //if original array data doesn't include in modified array
result.push(Nelement+" removed from "+ Nindex + " position" )
}
flag = false;
})
return result;
}