How to split the String in Javascript

Question

I have a string [{"Latitude":8.55701,"Longitude":76.880934},{"Latitude":8.55701,"Longitude":76.880935},{"Latitude":8.55701,"Longitude":76.880935}]

I want output as [{8.55701,76.880934},..etc] only numbers.

This is a JSON string -

<script type="text/javascript">
 var myVar = ' <%= request.getAttribute("Map") %>'; /* retrieve json from request attribute */
 var result = myVar.split(',',2);
 var latitude = parseFloat(result[0].replace('"Latitude":',''));
 var longitude = parseFloat(result[1].split(':'));
 alert(latitude); 
 </script>

I have tried but not getting it.

• abrunet: Did you even try? Have you check the split() method? JSON.parse etc..? What have you tried? SO is not a free mechanical turd.
• StackSlave: Why not use eval() or JSON.parse()?
• Sean_A91: You have to know that, objects are key-value pairs, you can't just store them by themselves. so you'd have to then use an array instead. `[[8.55701,76.880934],..etc] to keep them in pairs if you want them to be. Alternatively you could just ave one array where every other number is a longitude, and every other other number is a latitude.
• Pavel V.: Possible duplicate of How do I split a string with multiple separators in javascript?

Answer 1

Use simple Regular expression to remove the strings:

.replace(/\"\w+\":/g, '');
'[{"Latitude":8.55701,"Longitude":76.880934},{"Latitude":8.55701,"Longitude":76.880935},{"Latitude":8.55701,"Longitude":76.880935}]'.replace(/\"\w+\":/g, '');

And if you want to get the values you can use JSON.parse:

var coords = JSON.parse('[{"Latitude":8.55701,"Longitude":76.880934},{"Latitude":8.55701,"Longitude":76.880935},{"Latitude":8.55701,"Longitude":76.880935}]');
// And loop
coords.forEach(function(coord) {
 console.log('latitude', coord.Latitude);
 console.log('longitude', coord.Longitude);
});

• Aitor Aznar Álvarez: Vote up or mark as correct if it helps you. You're very welcome

Answer 2

try this, this function will return a string as you expected out put.

function pareseJSONStr(str){
 var json = JSON.parse(str);
 var rslt = [];
 json.forEach(function(obj){
 rslt.push("{" + obj.Latitude + ", " + obj.Longitude + "}");
 });
 return "[" + rslt.join(",") + "]"
}

call this function as

var mystr = '[{"Latitude":8.55701,"Longitude":76.880934},{"Latitude":8.55701,"Longitude":76.880935},{"Latitude":8.55701,"Longitude":76.880935}]';
pareseStr(mystr);

returns a string

"[{8.55701, 76.880934},{8.55701, 76.880935},{8.55701, 76.880935}]"

Answer 3

If you really want your strange data format just use it:

var convertStrange = function( string ) {
 return '[' + JSON.parse( string ).map( function( item ) {
 return '{' + [ item.Latitude, item.Longitude ].join( ',' ) + '}';
 } ).join( ',' ) + ']';
};

So,

convertStrange('[{"Latitude":8.55701,"Longitude":76.880934},{"Latitude":8.55701,"Longitude":76.880935},{"Latitude":8.55701,"Longitude":76.880935}]')

will return string

[{8.55701,76.880934},{8.55701,76.880935},{8.55701,76.880935}]

• Jaromanda X: what if it's an ACTUAL string (looks like a REAL JSON string to me) - easy fix - JSON.parse the string first :D ... of course, then the output HAS to be a string ... because it's not valid anything else
• Legotin: It is a valid array, containing objects, nope?
• Jaromanda X: I mean the output "required" in the question, your code is good man
• Legotin: I suppose it's a misprint or some like that, or he really wants invalid data format?
• Jaromanda X: he wants a string maybe?

Answer 4

{8.55701,76.880934} 

is wrong object construction. Objects must be name:value pairs so it can only be

{name1:8.55701, name2:76.880934}

or you can use an array like

[[8.55701, 76.880934], ... ]

if you want it as a string use this;

var string = '[{"Latitude":8.55701,"Longitude":76.880934}, {"Latitude":8.55701,"Longitude":76.880935}, {"Latitude":8.55701,"Longitude":76.880935}]';
var newString = string.replace(/\"Latitude\":|\"Longitude\":/g, "");