use async and await in nth instead of first?

Question

SyntaxError: await is only valid in async functions and the top level bodies of modules

The Error is showing exactly what is the problem, but what is bypass if i want to use in nTH function await ?.

To be more clear. address_submited() is called from html onclick=address_submited()

It read the wallet_address and start fetching data by GET request from OpenSea. There may be multiple calls depending on results. This function is solved by callback so 'it waits' untill it fetch all data.

Once the data is obtainted now inside a for loop it should do another API call for every single member. Since provider limited 50 calls per minute we need to add some delay. That's why i added the await new Promise(r => setTimeout(r, 2000));

Not it returns me back to start as described on this question : await is only valid in async function

async function address_submited() {
    const wallet_address = $('#wallet_id').val()
    start_app(wallet_address, 0, [])
}

function start_app(wallet_id, offset, all_events) {
    $.get('https://api.opensea.io/api/v1/events',
        {
            "account_address": wallet_id,
            "only_opensea": "false",
            "event_type": "successful",
            "offset": offset,
            "limit": "50"
        }).done(function (return_data) {
            all_events = all_events.concat(return_data['asset_events'])
            offset += return_data['asset_events'].length
            if (return_data['asset_events'].length != 0) {
                start_app(wallet_id, offset, all_events)
            } else {
                read_events(all_events)
            }
        })
}

function read_events(_all_events) {
    Object.entries(_all_events).forEach(item => {
        await new Promise(r => setTimeout(r, 2000));
        $.get(`https://api.etherscan.io/api?module=proxy&action=eth_getTransactionByHash&txhash=${item[1]["transaction"]["transaction_hash"]}&apikey=${etherscan_api_key}`).
            done(function (return_data) { 
                console.log(return_data)
            }) 
    })
}

`.forEach(async item => ...)` – Barmar Aug 29 '21 at 19:57 — Barmar, Aug 29 '21 at 19:57
@Barmar still don't have 2 seconds sleep between requests. – anelBavari Aug 29 '21 at 20:04 — anelBavari, Aug 29 '21 at 20:04

score 0 · Answer 1 · answered Aug 29 '21 at 19:57

0

You may also try this.

function read_events(_all_events) {
Object.entries(_all_events).forEach(async (item) => {
    await new Promise(r => setTimeout(r, 2000));
    $.get(`https://api.etherscan.io/api?module=proxy&action=eth_getTransactionByHash&txhash=${item[1]["transaction"]["transaction_hash"]}&apikey=${etherscan_api_key}`).
        done(function (return_data) { 
            console.log(return_data)
        }) 
})
}

answered Aug 29 '21 at 19:57

Shubham Prajapat

36
2

@Shubdam Prajapat still don't have 2 seconds sleep between requests. – anelBavari Aug 29 '21 at 20:04

use async and await in nth instead of first?

1 Answers1