找到数组长度并创建自定义代码行?

Question

下面是我的代码:

const json = `{"BTC":{"available":0.00024868,"onOrder":0,"btcValue":0.00024868,"btcTotal":0.00024868},"LTC":{"available":0,"onOrder":0,"btcValue":0,"btcTotal":0},"ETH":{"available":0,"onOrder":0,"btcValue":0,"btcTotal":0},"NEO":{"available":0,"onOrder":0,"btcValue":0,"btcTotal":0},"BNB":{"available":0.08943066,"onOrder":0,"btcValue":0.0004663808919,"btcTotal":0.0004663808919}}`;
const data = JSON.parse(json);
var Table = require('cli-table');
const chalk = require("chalk");
const processed = Object.entries(data)
.filter(([, { available }]) => available > 0)
.map(([asset, { available, btcValue }]) => {
return { asset, available, btcValue };
});
const asArray = processed.map(Object.values);
//console.table(processed);
console.log(asArray);
console.log(asArray.length)

var table = new Table({
head: [chalk.green.bold('Coin'), chalk.green.bold('Available'), chalk.green.bold('BTC Value')]
, colWidths: [25, 25, 25]
});
table.push(
asArray[0], asArray[1]
);
var tableDisplay = table.toString();
console.log(tableDisplay);

我试图找到找到asArray长度的方法，然后把每个索引在表中。

那么它会列出asArray[0]，并且无论

是什么，数组的每个索引都增加代码当前有效，但我必须知道数组的长度，以便每次更改代码。

Answer 1

你可以设置一个循环来循环你的asArray。forEach循环将遍历数组中的每个元素，直到到达末尾。

asArrays.forEach( element => {
table.push(element)
})