Call to the Azure Cognitive Services Computer Vision API from JavaScript

imageAnalysis.js

    $.ajax({
        // TODO: if needed, adapt the URL to the region where you created the service
        url: "https://westcentralus.api.cognitive.microsoft.com/vision/v2.0/analyze?" + $.param(params),
        beforeSend: function(xhrObj){
            // Request the output formatted as JSON
            xhrObj.setRequestHeader("Content-Type","application/json");
            // Send the subscription key as part of the header
            xhrObj.setRequestHeader("Ocp-Apim-Subscription-Key", subscriptionKey);
        },
        // Data is submitted to the server through a POST request
        type: "POST",
        // Request body: the image URL
        data: '{"url": ' + '"' + sourceImageUrl + '"}',
    })
    .done(function(data) {
        // Successful request: formate the result JSON in a human-friendly
        // way and output it to the text area HTML element.
        responseTextArea.val(JSON.stringify(data, null, 2));
        alert("Success");
    })
    .fail(function(jqXHR, textStatus, errorThrown) {
        // Error: print the error message to the text area HTML element.
        responseTextArea.val(JSON.stringify(jqXHR, null, 2));
        alert("Request Failed");
    });