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[英]How to delete object from array of objects in array of objects javascript by index
[英]How to delete empty objects from an Array in javascript?
我得到如下数组。
[{},
{},
{},
{ label: '2015', showLabels: '1,' },
{},
{},
{},
{ label: ‘2017’, showLabels: '1,' }]
但是,我想删除空索引。
我试过以下删除。 但是,没有按预期工作。
const filteredFinalYearArr = yearArray.filter(function (el) {
return el != null;
});
注意:这是动态数据
有什么建议么?
您可以filter
所有具有非零keys
数的对象:
let yearArray = [{},{},{},{label:'2015',showLabels:'1,'},{},{},{},{label:'2017',showLabels:'1,'}] let filtered = yearArray.filter(el => Object.keys(el).length) console.log(filtered)
const years = [ {}, {}, {}, { label: '2015', showLabels: '1,' }, {}, {}, {}, { label: '2017', showLabels: '1,' } ] const hasValues = obj => { for(var key in obj) { if(obj.hasOwnProperty(key)) return true } return false } const filteredYears = years.filter(y => hasValues(y)) console.log(filteredYears)
另一种方法是使用reduce来构建数组。
const yearArray = [{},{},{},{label:'2015',showLabels:'1,'},{},{},{},{label:'2017',showLabels:'1,'}] const filteredFinalYearArr = yearArray.reduce((o, i) => {Object.keys(i).length > 0 && o.push(i); return o}, []) console.log(filteredFinalYearArr)
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