decr()

Decrements the value of a key. If the key does not exist, it is initialized with 0 before performing the operation. An error is returned if the key contains a value of the wrong type or contains a string that can not be represented as integer.

Syntax

puter.kv.decr(key)
puter.kv.decr(key, amount)

Parameters

key (string) (required)

The key of the value to decrement.

amount (integer) (optional)

The amount to decrement the value by. Defaults to 1.

Return Value

Returns the new value of the key after the decrement operation.

Examples

Decrement the value of a key

Run

<html>
<body>
    <script src="https://js.puter.com/v2/"></script>
    <script>
        puter.kv.decr('testIncrKey').then((newValue) => {
            puter.print(`New value: ${newValue}`);
        });
    </script>
</body>
</html>