I have a JSON in the below format
waypoints = [
{
lat: 22,
lng: 44
},
{
lat: 55,
lng: 77
}
]
I need to convert it into the following format using JS
[[22, 44], [55, 77]]
Please can some one help me with a solution
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4Have you even tried searching for a similar question?bumpy– bumpy2015-08-28 12:15:08 +00:00Commented Aug 28, 2015 at 12:15
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1There is no JSON in your question. That's an array initializer containing object initializers. If you're in JavaScript source code, you're not dealing with JSON (unless it's inside a string).T.J. Crowder– T.J. Crowder2015-08-28 12:22:38 +00:00Commented Aug 28, 2015 at 12:22
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5 Answers
Just use map.
var foo = waypoints.map(function(waypoint){
return [waypoint.lat, waypoint.lng];
});
Comments
You can create a new array with use of .map method which in execution creates a new array without modifying the original array:
var waypoints = [{
lat: 22,
lng: 44
}, {
lat: 55,
lng: 77
}];
var newArr = waypoints.map(function(obj) {
return [obj.lat, obj.lng];
});
document.body.textContent = JSON.stringify(newArr);
You can use for...in loop and get the array
var array=[];
for(var i =0;i< waypoints.length;i++){
var nestedArray=[];
for(var key in waypoints[i]){
nestedArray.push(waypoints[i][key])
}
array.push(nestedArray)
}
Found other answers using map functionality of JavaScript. Thats good!!!
Comments
var waypoints = [
{
lat: 22,
lng: 44
},
{
lat: 55,
lng: 77
}
];
var array = [];
for (i in waypoints) {
array.push([]);
for (j in waypoints[i]) {
array[i].push(waypoints[i][j]);
}
}
answered Aug 28, 2015 at 12:19
Alessio Cantarella
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1 Comment
SuperBiasedMan
Welcome to Stack Overflow! Please consider editing your post to add more explanation about what your code does and why it will solve the problem. An answer that mostly just contains code (even if it's working) usually wont help the OP to understand their problem.
You can use:
waypoints = [{lat: 22, lng: 44 }, { lat: 55, lng: 77 } ];
var innerArr = [];
var requiredArray = [];
for (var i = 0; i < waypoints.length; i++) {
innerArr = [];
innerArr.push(waypoints[i].lat);
innerArr.push(waypoints[i].lng);
requiredArray.push(innerArr);
}
