JSON.stringify() <input> values as numbers?

问题

I am using JSON.stringify() on html <input>s to send through a websocket like so:

JSON.stringify({
    numberValue: $('#numberValue').val()
})

but it encodes $('#numberValue').val() as a String.

How can it be encoded as a Number?

回答1:

Convert it to an integer first.

JSON.stringify({
    numberValue: parseInt($('#numberValue').val(), 10);
})

回答2:

You can parse the string:

JSON.stringify({
    numberValue: parseInt($('#numberValue').val(), 10);
})

The parseInt() function parses a string and returns an integer.

More info: http://www.w3schools.com/jsref/jsref_parseint.asp

来源：https://stackoverflow.com/questions/18302890/json-stringify-input-values-as-numbers