[英]How to filter array of arrays
I have such array: 我有这样的数组:
homeShapeShift: [
[
{text:"BTC", callback_data: 'btc'},
{text:"ETH", callback_data: 'eth'},
{text:"XRP", callback_data: 'xrp'},
{text:"ETC", callback_data: 'etc'},
],
[
{text:"ZEC", callback_data: 'zec'},
{text:"DASH", callback_data: 'dash'},
{text:"LTC", callback_data: 'ltc'},
{text:"OMG", callback_data: 'omg'},
],
[
{text:"ADA", callback_data: 'ada'},
{text:"BTG", callback_data: 'btg'},
{text:"TRX", callback_data: 'trx'},
{text:"NEO", callback_data: 'neo'},
],
]
How to remove object with text Zec and receive new array without it? 如何用文本Zec删除对象并接收没有它的新数组? I tried something with filter but didn't receive good result 我尝试使用过滤器进行操作,但未收到良好结果
let fe = keyboard.homeShapeShift.filter(k => k.filter(e => e.text !== 'ZEC'));
If you just want to remove one element just map the inner arrays to new inner filtered arrays: 如果只想删除一个元素,只需将内部数组映射到新的内部过滤数组:
let fe = keyboard.homeShapeShift.map(k => k.filter(e => e.text !== 'ZEC'));
Or if you wanna remove the whole array use every
to get a boolean: 或者,如果您想删除整个数组,请使用every
获取布尔值:
let fe = keyboard.homeShapeShift.filter(k => k.every(e => e.text !== 'ZEC'));
that can be inversed too with some
: 也可以用some
反演:
let fe = keyboard.homeShapeShift.filter(k => !k.some(e => e.text === 'ZEC'));
You could filter the inner arrays by mapping them and then filter the outer array by the length of the inner arrays. 您可以通过映射内部数组来过滤它们,然后按照内部数组的长度过滤外部数组。
var homeShapeShift = [[{ text: "BTC", callback_data: 'btc' }, { text: "ETH", callback_data: 'eth' }, { text: "XRP", callback_data: 'xrp' }, { text: "ETC", callback_data: 'etc' }], [{ text: "ZEC", callback_data: 'zec' }, { text: "DASH", callback_data: 'dash' }, { text: "LTC", callback_data: 'ltc' }, { text: "OMG", callback_data: 'omg' }], [{ text: "ADA", callback_data: 'ada' }, { text: "BTG", callback_data: 'btg' }, { text: "TRX", callback_data: 'trx' }, { text: "NEO", callback_data: 'neo' }]], result = homeShapeShift .map(a => a.filter(({ text }) => text !== 'ZEC')) .filter(({ length }) => length); console.log(result);
.as-console-wrapper { max-height: 100% !important; top: 0; }
var fe = [];
var obj = [];
homeShapeShift.forEach(function(element) {
element.forEach(function(element) {
if(element.text !== 'ZEC'){
obj.push(element);
}
});
fe.push(obj);
obj = [];
});
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