水平垂直居中是前端的痛,也是前端__永恒__话题,这次记录两个用display:flex实现的方法:
第一种:
| var path = require('path'); | |
| var fs = require('fs'); | |
| var os = require('os'); | |
| var express = require('express'); | |
| var app = express(); | |
| var Busboy = require('busboy'); | |
| app.get('/', function (req, res) { | |
| res.send('<html><head></head><body>\ | |
| <form method="POST" enctype="multipart/form-data">\ |
| /* | |
| * Taken from http://stackoverflow.com/questions/5867534/how-to-save-canvas-data-to-file/5971674#5971674 | |
| */ | |
| var fs = require('fs'); | |
| // string generated by canvas.toDataURL() | |
| var img = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0" | |
| + "NAAAAKElEQVQ4jWNgYGD4Twzu6FhFFGYYNXDUwGFpIAk2E4dHDRw1cDgaCAASFOffhEIO" | |
| + "3gAAAABJRU5ErkJggg=="; | |
| // strip off the data: url prefix to get just the base64-encoded bytes |
| // fade out | |
| function fade(el) { | |
| var op = 1; | |
| var timer = setInterval(function () { | |
| if (op <= 0.1){ | |
| clearInterval(timer); | |
| el.style.display = 'none'; | |
| } | |
| el.style.opacity = op; |
| /*! | |
| * isVis - v0.5.5 Aug 2011 - Page Visibility API Polyfill | |
| * Copyright (c) 2011 Addy Osmani | |
| * Dual licensed under the MIT and GPL licenses. | |
| */ | |
| (function () { | |
| window.visibly = { | |
| b: null, | |
| q: document, |
| @mixin box-shadow($top, $left, $blur, $color, $inset: false) { | |
| @if $inset { | |
| -webkit-box-shadow:inset $top $left $blur $color; | |
| -moz-box-shadow:inset $top $left $blur $color; | |
| box-shadow:inset $top $left $blur $color; | |
| } @else { | |
| -webkit-box-shadow: $top $left $blur $color; | |
| -moz-box-shadow: $top $left $blur $color; | |
| box-shadow: $top $left $blur $color; | |
| } |