解决vue |
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解决vue
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最近帮同事解决一个前端页面布局问题，技术背景vue+elementui，出现问题如下：点击详情表格布局一切正常（列数不固定，估计后端返回决定）点击打印之后的表格出现不能撑满，多出空白列的情况。
未点击打印时布局展示
经过各种调试主要解决由：tableLayout属性用来显示表格单元格、行、列的算法规则 ①auto：（默认值）列宽度由单元格内容设定； ②fixed: 列宽由表格宽度和列宽度设定； ③inherit：规定应该从父元素继承table-layout属性的值。 /设置表格布局算法*/ table{ table-layout:auto!important; }和重新给elementui的表格内的宽度一定要设置成100%,.el-table__header和.el-table__body这个是框架内置的一些样式，得css重新更改 .el-table__header{ width: 100%!important; } .el-table__body{ width: 100%!important; }附带让表格内容超过自适宽度就换行 word-wrap: normal!important; width: auto!important; word-break: break-all!important;修改完成后打印的表格展示就正常了
其中打印print.js // 打印类属性、方法定义 /* eslint-disable */ const Print = function (dom, options) { if (!(this instanceof Print)) return new Print(dom, options); this.options = this.extend({ 'noPrint': '.no-print' }, options); if ((typeof dom) === "string") { this.dom = document.querySelector(dom); } else { this.isDOM(dom) this.dom = this.isDOM(dom) ? dom : dom.$el; } this.init(); }; Print.prototype = { init: function () { var content = this.getStyle() + this.getHtml(); this.writeIframe(content); }, extend: function (obj, obj2) { for (var k in obj2) { obj[k] = obj2[k]; } return obj; }, getStyle: function () { var str = "", styles = document.querySelectorAll('style,link'); for (var i = 0; i < styles.length; i++) { str += styles[i].outerHTML; } str += "" + (this.options.noPrint ? this.options.noPrint : '.no-print') + "{display:none;}"; return str; }, getHtml: function () { var inputs = document.querySelectorAll('input'); var textareas = document.querySelectorAll('textarea'); var selects = document.querySelectorAll('select'); for (var k = 0; k < inputs.length; k++) { if (inputs[k].type == "checkbox" || inputs[k].type == "radio") { if (inputs[k].checked == true) { inputs[k].setAttribute('checked', "checked") } else { inputs[k].removeAttribute('checked') } } else if (inputs[k].type == "text") { inputs[k].setAttribute('value', inputs[k].value) } else { inputs[k].setAttribute('value', inputs[k].value) } } for (var k2 = 0; k2 < textareas.length; k2++) { if (textareas[k2].type == 'textarea') { textareas[k2].innerHTML = textareas[k2].value } } for (var k3 = 0; k3 < selects.length; k3++) { if (selects[k3].type == 'select-one') { var child = selects[k3].children; for (var i in child) { if (child[i].tagName == 'OPTION') { if (child[i].selected == true) { child[i].setAttribute('selected', "selected") } else { child[i].removeAttribute('selected') } } } } } return this.dom.outerHTML; }, writeIframe: function (content) { var w, doc, iframe = document.createElement('iframe'), f = document.body.appendChild(iframe); iframe.id = "myIframe"; //iframe.style = "position:absolute;width:0;height:0;top:-10px;left:-10px;"; iframe.setAttribute('style', 'position:absolute;width:0;height:0;top:-10px;left:-10px;'); w = f.contentWindow || f.contentDocument; doc = f.contentDocument || f.contentWindow.document; doc.open(); doc.write(content); doc.close(); var _this = this iframe.onload = function(){ _this.toPrint(w); setTimeout(function () { document.body.removeChild(iframe) }, 100) } }, toPrint: function (frameWindow) { try { setTimeout(function () { frameWindow.focus(); try { if (!frameWindow.document.execCommand('print', false, null)) { frameWindow.print(); } } catch (e) { frameWindow.print(); } frameWindow.close(); }, 10); } catch (err) { console.log('err', err); } }, isDOM: (typeof HTMLElement === 'object') ? function (obj) { return obj instanceof HTMLElement; } : function (obj) { return obj && typeof obj === 'object' && obj.nodeType === 1 && typeof obj.nodeName === 'string'; } }; const MyPlugin = {} MyPlugin.install = function (Vue, options) { // 4. 添加实例方法 Vue.prototype.$print = Print } export default MyPluginprint.css样式 @media print { section{ margin-top: -35px; } .el-table__header{ width: 100%!important; } .el-table__body{ width: 100%!important; } .el-table__header{ table-layout: auto; } .el-table__body{ table-layout: auto!important; } .modal-body { min-height: auto; } .el-table--border th, .el-table--border td{ border-right: 1px solid #ebeef5; } .el-table th, .el-table td{ padding: 0px; } .el-table .cell{ padding-right: 0px; } .el-table{ width: 100%!important; } }具体vue页面部分关键代码 附件：协查信息表 退回 确定 取消 {{value.table_name}} {{scope.row[scope.column.property]}} import vBreadcrumb from '../../../components/common/Breadcrumb' import vModal from '../../../components/common/modal' import vTable from '../../../components/common/table' export default { name: "associateInfo", components: {vBreadcrumb, vTable, vModal}, data() { return { vBreadCrumbData: [ {name: '详情', url: '#'}, ], associate: { associateContent: { title: "", receiver: "", content: "", contacts: "", phone: "", fax: "", email: "", createOrgName: "", time: "" }, tableDataList: [], }, dynamicTable: [], } }, methods: { printContent(){ this.$print(this.$refs.print) }, }, } @import "../../../../static/print/print.css"; #associateInfo { .modal-body { min-height: auto; } .el-table__header{ table-layout: auto; } .el-table__body{ table-layout: auto!important; } .el-table--border th, .el-table--border td{ border-right: 1px solid #ebeef5; } .el-table th, .el-table td{ padding: 0px; word-wrap: normal!important; width: auto!important; word-break: break-all!important; } .el-table .cell{ padding-right: 0px; } } |
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