Function isInputEventSupported

third_party/inputmask/inputmask.js:733–741

(eventName)

        return ms;
    }
    function isInputEventSupported(eventName) {
        var el = document.createElement("input"), evName = "on" + eventName, isSupported = evName in el;
        if (!isSupported) {
            el.setAttribute(evName, "return;");
            isSupported = typeof el[evName] === "function";
        }
        el = null;
        return isSupported;
    }
    function maskScope(actionObj, maskset, opts) {
        maskset = maskset || this.maskset;
        opts = opts || this.opts;