Can't read property of object

Question

//Note:- Items is array & Id is also array

function searchItems(id){
var data = [];

items.forEach( function(element,index,array){
for(var x = 0; x < id.length; x++){
if(element.title.toLowerCase().includes(id[x])){
var it = index;
if(data.some((o) => o.pos === it))
{
try{
data[index].pr = ++data[index].pr;
}catch(e){
console.log(e);
}
}
else
{
data.push({pos:index,pr:0});
}
}
}
});

// At position of data[index].pr = ++data[index].pr; in code, it cause error "can't read property of pr"

But some times it not throw any error why?

I defined pr at data.push({pos:index,pr:0});

How to fix?

Answer 1

You have 2 arrays, items and id, what are you trying to calculate with them? If i dont know i cant help..

Answer 2

Giorgos D in items I have list of articles contains key title and description where as in id it contains single data array of few words which I want to match with article title

items = [{"title":"how to cook food","description":".."}]
Id = ["cook","food"]

Answer 3

Insider Evil hang on, i accidentally deleted my code.. have to rewrite it 🥴

Answer 4

https://code.sololearn.com/cG83KtNE05V6/?ref=app

Answer 5

Giorgos D extra note that pr is stand for page rank and pos stand for index of items position which matched with id
And all I collect in data array 😅🙏

Answer 6

Insider Evil I have updated the code to include another speculation of what you may mean 😛

Answer 7

Insider Evil What are you trying to achieve? What should searchItems() do? Also, it looks like 'data' should be a dictionary instead of array

Answer 8

Giorgos D
https://www.sololearn.com/discuss/2857481/?ref=app

Answer 9

Insider Evil In the code in the other question: replace data.push(element.title) with data.push(index) and you will have the indices of items array instead

Answer 10

Giorgos D that's old one and now I modified that, now got error some time with 'pr'

Answer 11

Insider Evil is this what you want? If not then provide some more info about what should searchItems do

function searchItems(id){
var data = {}; //dictionary

items.forEach( function(element,index,array){
for(var x = 0; x < id.length; x++){
if(element.title.toLowerCase().includes(id[x])){
if(data[index])
{
data[index]++; //pr++
}
else
{
data[index] = 0; //pr to 0
}
}
}
});
console.log(data);

Answer 12

Giorgos D what about "pos" object in Data?

Answer 13

Giorgos D in items I have few articles contains key title and description
Like items = [{"title":"how to cook food","description":"...."}]
and in id,
id = ["cook","food"]

and I want match if title contains id each index value