Function readZoomParameter

viewer.js:248–260

(zoom)

    }

    function readZoomParameter(zoom) {
        var validZoomStrings = ["auto", "page-actual", "page-width"],
            number;

        if (validZoomStrings.indexOf(zoom) !== -1) {
            return zoom;
        }
        number = parseFloat(zoom);
        if (number && kMinScale <= number && number <= kMaxScale) {
            return zoom;
        }
        return kDefaultScale;
    }

    function readStartPageParameter(startPage) {
        var result = parseInt(startPage, 10);