frontend js configuration issue

[frankli1224]

Thank you for your excellent tutorial. I have a issue with the frontend, in the index.js I don't know how add private keys into the keyprovider.

my keyprovider looks like this:
keyProvider:[[
"EOS5BtL6cQsVzMhuujppUTKmVWFY6EYLrDfdraaQnA2BBJYCrxCCb",
"5KCk5d5pAuack1NiqSxTiJsrAiE6wgLxYHGo6JACpMuFJb39NeG"
],[
"EOS5GQ7PHBvEPCRWhiA3rNDVrrLYtvoxh7Vvnska9xa4RjkyZvUbH",
"5J38vcyy1CVR9NeAArrZfeAUzjyGEAzJZmJ7paLHqJYKQo6hQC9"
],[
"EOS5cDrz8eHLHwW94QSpSwwLFphUCRKYiCyoZ8CoySm6EVMwHCDBE",
"5Jjvnup2dqUGsQ7KhvJgYyohL8jUv9zcWcECHiWyZuALxXZWT5C"
],[
"EOS5sGH7Rdch9qHaXLA98NRg1qPrH7UobrZBsdS5Nt7Qd2uJVH8G3",
"5HvCUxF4AVkePfAewWjXyqiApMQ3Yy6NzGKJE2w8WQvtEGvZLqa"
],[
"EOS6AT4kMkkiYhDgUeJ8YxupBRWHzu9pLPPicqLnpPN7qViT5TFiU",
"5J5RHaY31VLcZoFUhjfSudyArKu6WWFbdmocaFYojsehENAFKRQ"
],[
"EOS6MRyAjQq8ud7hVNYcfnVPJqcVpscN5So8BhtHuGYqET5GDW5CV",
"5KQwrPbwdL6PhXujxW37FSSQZ1JiwsST4cqQzDeyXtP79zkvFD3"
],[
"EOS8MHfK4v7UGHrYKq1beFbrxv8LegKvgaXk4xEcK1ynBRGDqbAvU",
"5KELKQohNbdoJ2MRmHPQh6ef7tFWSpBQ1gCpcjkNKER7hWczwCZ"
]
], // Your private ke

when i click the ping button I got this problem:
apigen.js:115 AssertionError {name: "AssertionError", actual: false, expected: true, operator: "==", message: "expecting public or private keys from keyProvider", …}

Thank you for your help!

[njappboy]

@frankli1224 the eosjs config expects an string WIF or array of string WIFs.
https://github.com/EOSIO/eosjs#configuration