TypeScript does not recognize the $.ajax function

Looking for help with this code snippet:

    $.ajax({
        url: modal.href,
        dataType: 'json',
        type: 'POST',
        data: modal.$form.serializeArray()
    })
        .done(onSubmitDone)
        .fail(onSubmitFail);

Encountering an issue where TypeScript is flagging a message at the $.ajax call, saying:

Supplied parameters do not match any signature of call target.

I've double-checked my $.ajax setup and made sure to reference the jQuery definitions correctly. Any suggestions on what might be causing this error?

javascripttypescript

Answer №1

When referencing jquery.d.ts:

ajax(url: string, options: JQueryAjaxSettings);

This is the defined signature for the ajax function. To ensure compatibility with TypeScript, it is recommended to extract the url from the settings object and pass it as a separate parameter. Alternatively, you can modify the definitions in jquery.d.ts to allow for passing settings only during function invocation.

Answer №2

Although the original jQuery definitions did not initially include the overload without the Url, they have since been revised and you can access the most recent version from GitHub:

Additionally, you can find an updated mirror of the jQuery definitions at https://github.com/borisyankov/TypeDefinitions

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