Method _setReadOnly

src/AutoNumeric.js:1523–1529

* Set the element to be read-only. * If the DOM element tag is not an `input`, then it `contenteditable` attribute is set to `false`. * * @private

()

     * @private
     */
    _setReadOnly() {
        if (this.isInputElement) {
            this.domElement.readOnly = true;
        } else {
            this.domElement.setAttribute('contenteditable', false);
        }
    }

    /**
     * Set the element to be read-write.