Javascript - Count array objects that have a value

Question

I\'m getting an array returned to me and I need to count the rows that have a value in them

I\'ve tried to call arr.length but that gives me the total length of the

Answer 1

Using reduce

var arr = [ { id: '1', '': '' },{ id: '2', '': '' },{ id: '3', '': '' },{ id: '4', '': '' },{ id: '', '': '' },{ id: '', '': '' },{ id: '', '': '' },{ id: '', '': '' },{ id: '', '': '' },{ id: '', '': '' },{ id: '', '': '' },{ id: '', '': '' },{ id: '', '': '' },{ id: '', '': '' },{ id: '', '': '' },{ id: '', '': '' },{ id: '', '': '' },{ id: '', '': '' },{ id: '', '': '' },{ id: '', '': '' },{ id: '', '': '' } ]

console.log(arr.reduce((acc,e)=>{e.id!=''?acc++:false; return acc},0))