Storing multiple items in an array using LocalForage

Question

Storing multiple items in an array using LocalForage

I have a challenge where I need to add multiple items to an array without overriding them.

My initial approach was like this:

   localForage.getItem("data", (err, results) => {
        console.log('results', results)
        // var dataArray = results ? results : [];
        // data.push(results);
        this.dataArray.push(results);
        localForage.setItem("data", results);
        console.log(localForage.getItem("data"));
    })

However, this code snippet is replacing the last item. How can I successfully push multiple localForage items into that dataArray?

javascript typescript ionic2 localforage

Answer 1

Answer №1

I recently conducted a successful test using localForage, and the outcome was positive:

Let's assume we have a variable dataArray containing some data.

1) The process to replace the existing dataArray with the content retrieved from localForage is as follows:

localForage.getItem("data").then((results) => {
       dataArray = [].concat(results);
      });

2) Adding the data from localForage to the existing dataArray can be done like this:

localForage.getItem("data").then((results) => {
       dataArray = dataArray.concat(results);
      });

3) If you wish to add to what is stored in localForage while also updating the local storage, follow these steps:

localForage.getItem("data").then((result) => {
    dataArray = dataArray.concat(result);
    localForage.removeItem("data");
    localForage.setItem("data", dataArray);
  });

I hope this explanation proves helpful for your project.

Answer 2

I recently conducted a successful test using localForage, and the outcome was positive:

Let's assume we have a variable dataArray containing some data.

1) The process to replace the existing dataArray with the content retrieved from localForage is as follows:

localForage.getItem("data").then((results) => {
       dataArray = [].concat(results);
      });

2) Adding the data from localForage to the existing dataArray can be done like this:

localForage.getItem("data").then((results) => {
       dataArray = dataArray.concat(results);
      });

3) If you wish to add to what is stored in localForage while also updating the local storage, follow these steps:

localForage.getItem("data").then((result) => {
    dataArray = dataArray.concat(result);
    localForage.removeItem("data");
    localForage.setItem("data", dataArray);
  });

I hope this explanation proves helpful for your project.

Storing multiple items in an array using LocalForage

Answer №1

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