I have an array of strings:
["14: London", "15: Manchester", "16: Bristol"]
I need to change it into an array of objects that would look like this:
[{14: "London"}, {15: "Manchester"}, {16: "Bristol"}]
I assume that the best way to go about this is to first iterate over the array and split each string and then convert it into an object before pushing back into an array.
I can't really figure out how to make it work though, so any help would be much appreciated.
Thanks for your time
Use Array#map method to generate the array.
var arr = ["14: London", "15: Manchester", "16: Bristol"];
// iterate over the array
var res = arr.map(function(v) {
// split the value based on `:`
var splitArr = v.split(':'),
// initialize an object
obj = {};
//define the property value
obj[splitArr[0].trim()] = splitArr[1].trim();
// return the generated object
return obj;
})
console.log(res);
You can map it
var arr = ["14: London", "15: Manchester", "16: Bristol"];
var obj = arr.map(d => {
var split = d.split(": ");
return {
[split[0]] : split[1]
}
});
var arr = ["14: London", "15: Manchester", "16: Bristol"];
var makeObjectFromArray = function(arr) {
if (Object.prototype.toString.call(arr) !== '[object Array]') return arr;
var objects = [];
for (var i = 0, length = arr.length; i < length; i++) {
var obj = arr[i].split(":");
var temp = {};
var key = (typeof obj[1] === 'string') ? obj[0].trim() : obj[0];
var value = (typeof obj[1] === 'string') ? obj[1].trim() : obj[1];
temp[key] = value;
objects.push(temp);
}
return objects;
};
console.log(makeObjectFromArray(arr))You could also do like this so you can know when your object already has a key/value pair with the same key:
var testArray = ["14: London", "14: London", "15: Manchester", "16: Bristol"];
var testObj = {};
var length = testArray.length;
for ( var i = 0; i < length; i++ ) {
var newTestArray = testArray[i].split(":");
if ( testObj[newTestArray[0]] === undefined ) {
testObj[newTestArray[0]] = newTestArray[1];
} else {
console.log("key: " + newTestArray[0] + " already exists!");
}
}
arr.map(function (s) { var str = s.split(':'); return { [str[0]]: str[1].trim() }; });