How to remove space in keys of a JSON object

Question

I have an output like below:

output = {
  \"New Classroom\": [{
    \"Name\": \"Apple\",
    \"Age\": \"6\",
    \"Per         


        

Answer 1

You can loop through the top-level property names in the object you receive, detect any with spaces, and remove the spaces. (You don't need to, they're perfectly valid property names, but you can if you want.)

var output = { "New Classroom": [{"Name": "Apple","Age": "6","Percentage": "24.00%"},{"Name": "Orange","Age": "5","Percentage": "9.88%"},{"Name": "Green","Age": "2","Percentage": "27.27%"},{"Name": "Grey","Age": "6","Percentage": "12.63%"}]};
var name, newName;
// Loop through the property names
for (var name in output) {
  // Get the name without spaces
  newName = name.replace(/ /g, "");
  // If that's different...
  if (newName != name) {
    // Create the new property
    output[newName] = output[name];
    // Delete the old one
    delete output[name];
  }
}
console.log(output);

Note that using delete on an object can reduce the performance of subsequent property lookups. 99.99% of the time, that doesn't matter. If it matters in your case, create a new object rather than modifying it in place:

var output = { "New Classroom": [{"Name": "Apple","Age": "6","Percentage": "24.00%"},{"Name": "Orange","Age": "5","Percentage": "9.88%"},{"Name": "Green","Age": "2","Percentage": "27.27%"},{"Name": "Grey","Age": "6","Percentage": "12.63%"}]};
var name, newName;
var newOutput = {};
// Loop through the property names
for (var name in output) {
  // Get the name without spaces
  newName = name.replace(/ /g, "");
  
  // Copy the property over
  newOutput[newName] = output[name];
}
console.log(newOutput);