打印
<pre><code>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>';
str += `<style>
table{
width: 100% !important;
font-size: 12px !important;
}
.el-table__body,
.el-table__header {
width: 100% !important;
}
.el-table__body {
width: 100% !important;
}
.el-table .el-table__cell{
width: 100% !important;
}
colgroup col {
width: 10%;
}
colgroup [name='gutter']{
display: none !important;
}
colgroup col:first-of-type{
width: 6%;
}
.el-table__empty-block{
height:60px !important;
}
.winners-grid{
height:70px !important;
}
</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.dom.outerHTML;
},
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 PrintPlugin = {};
PrintPlugin.install = function (Vue, options) {
Vue.prototype.$print = Print;
};
export default PrintPlugin;
</code></pre>