vue项目如何打印指定区域,或者指定区域不打印,下面给大家简单介绍一下实现代码!
1、在main.js注册插件
import MyPlugin from "@/utils/print.js"; Vue.use(MyPlugin);
2、定义打印区域
<div id="printArea" ref="printArea"> //打印内容 </div>
3、调用打印方法
this.$print(this.$refs.print)
4、@/utils/print.js
代码
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 += "<style>" + (this.options.noPrint ? this.options.noPrint : '.no-print') + "{display:none;}</style>"; 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.wrapperRefDom(this.dom).outerHTML; }, wrapperRefDom: function(refDom) { let prevDom = null let currDom = refDom prevDom = currDom.parentElement return currDom.tagName.toLowerCase() === 'body' ? currDom : prevDom }, writeIframe: function(content) { var w, doc, iframe = document.createElement('iframe'), f = document.body.appendChild(iframe); iframe.id = "myIframe"; 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 MyPlugin
5、设置打印区域中不打印部分
<div id="printArea" ref="printArea"> //打印内容 <div class="no-print">不要打印我</div> </div>
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标签: 区域打印
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