I am learning to use underscore js. I grouped the array. But now i need split array.
I have a grouped JSON array. For example;
var arr = [{"key": "A", "value": ["erdem", "metin", "tamer", "hüseyin"]}]
I want this to be the result.
var arr = [{"key" : "A", "value" : "erdem"},{"key" : "A", "value" : "metin"},{"key" : "A", "value" : "tamer"},{"key" : "A", "value" : "hüseyin"}]
I'm happy if you show me how to do it.
var arr = [
{"key": "A", "value": ["erdem", "metin", "tamer", "hüseyin"]},
{"key": "B", "value": ["foo", "bar"]}
];
// create modified array of objects
var result = arr.map(item => item.value.map(v => ({ key:item.key, value:v })) );
// print result
console.log( [].concat(...result) );@forguta you can use this method to get your required output.
var arr = [{"key": "A", "value": ["erdem", "metin", "tamer", "hüseyin"]}]
_.map(arr,function(item){
var temp=[];
_.map(item.value, function(x){
temp.push({key: item.key, value: x});
});
return temp;
});
You can achieve the result without temp variable also (short form)
_.map(arr,function(item){
return _.map(item.value, function(x){
return {key: item.key, value: x};
});
});
How about reduce the main array and then concat each resulting array with a initial empty array
arr.reduce((i, o)=>i.concat(o.value.map(v=>({key: o.key, value: v}))), []);
var arr = [
{"key": "A", "value": ["erdem", "metin", "tamer", "hüseyin"]},
{"key": "B", "value": ["foo", "bar"]}
];
var res = arr.reduce((i, o)=>i.concat(o.value.map(v=>({key: o.key, value: v}))), []);
console.log(res);
_.flatten(_.map(yourArr, theSplitFunction), true);