实现el-table打印功能,样式对齐，去除滚动条

// 整个页面打印
function printTable(id) {// let domId = '#js_index'// if (id) {//   domId = `#${ id }`;// }// let wpt = document.querySelector(domId);// let newContent = wpt.innerHTML;// let oldContent = document.body.innerHTML;// document.body.innerHTML = newContent;// window.print(); //打印方法// history.go(0);// document.body.innerHTML = oldContent;if (id) {// 获取打印DOMlet el = document.getElementById(id);// 当前页面样式let headDom = document.getElementsByTagName("head")[0];// 创建iframelet iframe = document.createElement("iframe");// 设置iframe样式iframe.setAttribute("id", id);iframe.setAttribute("style","position:absolute;width:0px;height:0px;left:-500px;top:-500px;");// 在页面插入iframedocument.body.appendChild(iframe);// 获取iframe内的htmllet doc = iframe.contentWindow.document;// 经需要打印的DOM插入iframelet printMain = document.createElement("div");printMain.setAttribute("id", id);printMain.innerHTML = el.innerHTML;doc.body.appendChild(printMain);// 设置iframe内的header，添加样式文件setTimeout(() => {doc.getElementsByTagName("head")[0].innerHTML = headDom.innerHTML;const table = doc.querySelectorAll('.el-table__header,.el-table__body');const table1 = doc.querySelectorAll('.el-table');const table2 = doc.querySelectorAll('.el-table__body-wrapper');for (let i = 0; i < table2.length; i++) {const tableItem = table2[i];console.log(tableItem);tableItem.style.maxHeight = 'unset';}for (let i = 0; i < table1.length; i++) {const tableItem = table1[i];console.log(tableItem);tableItem.style.maxHeight = 'unset';}setTimeout(() => {//el-table 打印不全的问题for (let i = 0; i < table.length; i++) {const tableItem = table[i];console.log(table1);tableItem.style.width = '100%';const child = tableItem.childNodes;for (let j = 0; j < child.length; j++) {const element = child[j];if (element.localName == 'colgroup') {element.innerHTML = '';}}}setTimeout(function () {iframe.contentWindow.focus();iframe.contentWindow.print();// 关闭iframedoc.close();document.body.removeChild(iframe);}, 1000);}, 1000)}, 0)} else {window.print(); //打印方法}
}