CODEWITHSUNDEEP
javascriptkeyiteration
Andrew Sunset
Andrew Sunset

Reputation: 39

How to erase only the values of an object?

I have the following object:

obj = {"foo":"bar", "foo2":"bar2", "foo3":"bar3"};

I've been trying with a few iterations but haven't been able to catch the values (bar, bar2, bar3), only the keys.

What I need to do is to clear those values, so the keys happen to be all empty.

I've tried the following:

$.each( obj, function( key, value ) {
  delete value;
// or also: value = '';
});

And also stuff like:

$(obj).each(function (key,value) -- //same content as last one.

Object.values(obj).forEach(function (key) {
  var value = obj[key];
});

Upvotes: 0

Views: 347

Answers (2)

Pritam Banerjee
Pritam Banerjee

Reputation: 18958

You can just do this by looping:

var test = {"a":"abc", "b":"ref", "c": "def"}

console.log("Before:");
console.log(test);
 
for (var key in test) {
   test[key] = "";
}
console.log("After:");
console.log(test);

Upvotes: 1

Martin Adámek
Martin Adámek

Reputation: 18429

Iterate through that object and set the value to null/undefined or whatever you want as empty value.

var obj = {"foo":"bar", "foo2":"bar2", "foo3":"bar3"};
Object.keys(obj).forEach(k => { obj[k] = null; })

console.log(obj);

Or if you want to remove the key, use delete:

var obj = {"foo":"bar", "foo2":"bar2", "foo3":"bar3"};
Object.keys(obj).forEach(k => { delete obj[k]; })

console.log(obj);

Upvotes: 1

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