I have indeed found many questions that sounded similar but none worked in my case. Fairly new to OOP so please bear with me.
console.log(result) returns object below successfully:
[
{ name: 'horse', lid: 1 },
{ name: 'cat', lid: 2 },
{ name: 'dog', lid: 3 }
]
I'd like the output to be
[
{ name: 'horse' },
{ name: 'cat' },
{ name: 'dog' }
]
I know I can make the query fetch name only but what I am after is having full data set in result then choosing what properties to be displayed and what properties to be skipped for all objects.
My attempts so far
console.log(result[0].name + result[1].name + result[2].name); =>Success but what if I have 1000 objects ?
for (let i = 0; i <= result.length; i++) {console.log(result[i].name);}
=> Failed and returns Cannot read properties of undefined
result.forEach(arr => {
for (const key in arr) {
// console.log(arr[key].name);
console.log(arr[key]['name']);
}
});
Also failed and returns Cannot read properties of undefined
Your for loop expression shouldn't go beyond length -1 (arrays are indexed from zero so last element index is length -1) so you should write it this way
const results = [
{ name: 'horse', lid: 1 },
{ name: 'cat', lid: 2 },
{ name: 'dog', lid: 3 }
];
for (let i = 0; i < results.length; i++) {console.log(results[i].name);}And the forEach syntax should look like this
const results = [
{ name: 'horse', lid: 1 },
{ name: 'cat', lid: 2 },
{ name: 'dog', lid: 3 }
];
results.forEach(res => console.log(res.name));the basic stuff
<script>
result=[
{ name: 'horse', lid: 1 },
{ name: 'cat', lid: 2 },
{ name: 'dog', lid: 3 }
]
result.forEach(function(vl){
console.log(vl.name);
})
</script>
the array you lookin for
<script>
result=[
{ name: 'horse', lid: 1 },
{ name: 'cat', lid: 2 },
{ name: 'dog', lid: 3 }
]
var newstuff=[];
result.forEach(function(vl){
console.log(vl.name);
newstuff.push(vl.name);
})
console.log(newstuff);
</script>
I hope this helps
foreach cant return anything , and give u undifinde ,
use map() , if u want be return someting
const a = [
{ name: 'horse', lid: 1 },
{ name: 'cat', lid: 2 },
{ name: 'dog', lid: 3 },
];
a.map((items) => {
const { name } = items;
console.log(name);
});