html打印

    const onPrint = () => {
        let printNode:any = document.getElementById('previewEditorContentTextBox');

        let iframe:any = document.createElement('iframe');
        iframe.setAttribute('style', 'position:absolute;width:0px;height:0px;left:-500px;top:-500px;');
        document.body.appendChild(iframe);

        iframe.contentDocument.write(printNode.innerHTML);
        iframe.contentDocument.close();
        iframe.contentWindow.print();

        document.body.removeChild(iframe);
    }