bootstrap+fileinput插件实现可预览上传照片功能
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bootstrap+fileinput插件实现可预览上传照片功能
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圖片.png
圖片.png
實際項目中運用：
圖片.png
功能：實現上傳圖片，更改上傳圖片，移除圖片的功能
<!DOCTYPE html> <html><head><meta charset="UTF-8"><title></title><link rel="stylesheet" href="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/css/bootstrap.min.css"><link rel="stylesheet" href="bootstrap-fileinput.css"><script src="http://cdn.static.runoob.com/libs/jquery/2.1.1/jquery.min.js"></script><script src="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/js/bootstrap.min.js"></script><script src="bootstrap-fileinput.js"></script></head><body><div class="form-group"><div class="col-md-8"><div class="fileinput fileinput-new" data-provides="fileinput" id="uploadImageDiv"><div class="fileinput-new thumbnail" style="width: 200px; height: 150px;"><img src="${companyInfo.image}" alt="" /></div><div class="fileinput-preview fileinput-exists thumbnail" style="max-width: 200px; max-height: 150px;"></div><div><span class="btn default btn-file"> <spanclass="fileinput-new">選擇圖片</span> <span class="fileinput-exists">更改</span> <input type="file" name="uploadImage" id="uploadImage" /></span><a href="#" class="btn default fileinput-exists" data-dismiss="fileinput">移除</a><span>請選擇1M以內圖片</span></div></div><div id="titleImageError" style="color: #a94442"></div></div></div></body><script>var url = ''; $("#uploadImage").fileupload({url : ROOT + "/security/company/uploadFile",dataType : 'json',autoUpload : false,acceptFileTypes : /(gif|jpe?g|png)$/i,maxFileSize : 1000000, // 1 MBimageMaxWidth : 100,imageMaxHeight : 100,messages : {acceptFileTypes : '文件類型不匹配',maxFileSize : '文件過大',minFileSize : '文件過小'} }).on("fileuploadadd", function(e, data) {// 當文件添加上去時候調用$("#titleImageError").html("");data.submit() }).on("fileuploaddone", function(e, data) {// 上傳完成時調用if (data.result.returnState == "ERROR") {alert("上傳失敗")return;}url = data.result.returnData.url; });function updateMsg() {$.ajax({url : ROOT + "/security/company/updateInfo",data : {id : $("#companyId").val(),image : url,companyName : $("#companyName").val(),companySite : $("#companySite").val(),companyLinker : $("#companyLinker").val(),companyTel : $("#companyTel").val()},type : "post",success : function(data) {if (data.returnState == "OK") {layer.msg('操作成功', {icon : 6,shade : 0.01,offset : [ '57px', '1100px' ]});$table.bootstrapTable('refresh');} else {layer.msg('操作失敗', {icon : 5,shade : 0.01,offset : [ '90px', '900px' ]});}}}); }</script></html>bootstrap-fileinput.css文件：（github目前正在維護中，之后所有代碼上傳至我的github）
/*!* Jasny Bootstrap v3.1.3 (http://jasny.github.io/bootstrap)* Copyright 2012-2014 Arnold Daniels* Licensed under Apache-2.0 (https://github.com/jasny/bootstrap/blob/master/LICENSE)*/.btn-file {position: relative;overflow: hidden;vertical-align: middle; } .btn-file > input {position: absolute;top: 0;right: 0;width: 100%;height: 100%;margin: 0;font-size: 23px;cursor: pointer;filter: alpha(opacity=0);opacity: 0;direction: ltr; } .fileinput {display: inline-block;margin-bottom: 9px; } .fileinput .form-control {display: inline-block;padding-top: 7px;padding-bottom: 5px;margin-bottom: 0;vertical-align: middle;cursor: text; } .fileinput .thumbnail {display: inline-block;margin-bottom: 5px;overflow: hidden;text-align: center;vertical-align: middle; } .fileinput .thumbnail > img {max-height: 100%; } .fileinput .btn {vertical-align: middle; } .fileinput-exists .fileinput-new, .fileinput-new .fileinput-exists {display: none; } .fileinput-inline .fileinput-controls {display: inline; } .fileinput-filename {display: inline-block;overflow: hidden;vertical-align: middle; } .form-control .fileinput-filename {vertical-align: bottom; } .fileinput.input-group {display: table; } .fileinput.input-group > * {position: relative;z-index: 2; } .fileinput.input-group > .btn-file {z-index: 1; } .fileinput-new.input-group .btn-file, .fileinput-new .input-group .btn-file {border-radius: 0 4px 4px 0; } .fileinput-new.input-group .btn-file.btn-xs, .fileinput-new .input-group .btn-file.btn-xs, .fileinput-new.input-group .btn-file.btn-sm, .fileinput-new .input-group .btn-file.btn-sm {border-radius: 0 3px 3px 0; } .fileinput-new.input-group .btn-file.btn-lg, .fileinput-new .input-group .btn-file.btn-lg {border-radius: 0 6px 6px 0; } .form-group.has-warning .fileinput .fileinput-preview {color: #8a6d3b; } .form-group.has-warning .fileinput .thumbnail {border-color: #faebcc; } .form-group.has-error .fileinput .fileinput-preview {color: #a94442; } .form-group.has-error .fileinput .thumbnail {border-color: #ebccd1; } .form-group.has-success .fileinput .fileinput-preview {color: #3c763d; } .form-group.has-success .fileinput .thumbnail {border-color: #d6e9c6; } .input-group-addon:not(:first-child) {border-left: 0; }bootstrap-fileinput.js:
/* ===========================================================* Bootstrap: fileinput.js v3.1.3* http://jasny.github.com/bootstrap/javascript/#fileinput* ===========================================================* Copyright 2012-2014 Arnold Daniels** Licensed under the Apache License, Version 2.0 (the "License")* you may not use this file except in compliance with the License.* You may obtain a copy of the License at** http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an "AS IS" BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.* See the License for the specific language governing permissions and* limitations under the License.* ========================================================== */+function ($) { "use strict";var isIE = window.navigator.appName == 'Microsoft Internet Explorer'// FILEUPLOAD PUBLIC CLASS DEFINITION// =================================var Fileinput = function (element, options) {this.$element = $(element)this.$input = this.$element.find(':file')if (this.$input.length === 0) returnthis.name = this.$input.attr('name') || options.namethis.$hidden = this.$element.find('input[type=hidden][name="' + this.name + '"]')if (this.$hidden.length === 0) {this.$hidden = $('<input type="hidden">').insertBefore(this.$input)}this.$preview = this.$element.find('.fileinput-preview')var height = this.$preview.css('height')if (this.$preview.css('display') !== 'inline' && height !== '0px' && height !== 'none') {this.$preview.css('line-height', height)}this.original = {exists: this.$element.hasClass('fileinput-exists'),preview: this.$preview.html(),hiddenVal: this.$hidden.val()}this.listen()}Fileinput.prototype.listen = function() {this.$input.on('change.bs.fileinput', $.proxy(this.change, this))$(this.$input[0].form).on('reset.bs.fileinput', $.proxy(this.reset, this))this.$element.find('[data-trigger="fileinput"]').on('click.bs.fileinput', $.proxy(this.trigger, this))this.$element.find('[data-dismiss="fileinput"]').on('click.bs.fileinput', $.proxy(this.clear, this))},Fileinput.prototype.change = function(e) {var files = e.target.files === undefined ? (e.target && e.target.value ? [{ name: e.target.value.replace(/^.+\\/, '')}] : []) : e.target.filese.stopPropagation()if (files.length === 0) {this.clear()return}this.$hidden.val('')this.$hidden.attr('name', '')this.$input.attr('name', this.name)var file = files[0]if (this.$preview.length > 0 && (typeof file.type !== "undefined" ? file.type.match(/^image\/(gif|png|jpeg)$/) : file.name.match(/\.(gif|png|jpe?g)$/i)) && typeof FileReader !== "undefined") {var reader = new FileReader()var preview = this.$previewvar element = this.$elementreader.onload = function(re) {var $img = $('<img>')$img[0].src = re.target.resultfiles[0].result = re.target.resultelement.find('.fileinput-filename').text(file.name)// if parent has max-height, using `(max-)height: 100%` on child doesn't take padding and border into accountif (preview.css('max-height') != 'none') $img.css('max-height', parseInt(preview.css('max-height'), 10) - parseInt(preview.css('padding-top'), 10) - parseInt(preview.css('padding-bottom'), 10) - parseInt(preview.css('border-top'), 10) - parseInt(preview.css('border-bottom'), 10))preview.html($img)element.addClass('fileinput-exists').removeClass('fileinput-new')element.trigger('change.bs.fileinput', files)}reader.readAsDataURL(file)} else {this.$element.find('.fileinput-filename').text(file.name)this.$preview.text(file.name)this.$element.addClass('fileinput-exists').removeClass('fileinput-new')this.$element.trigger('change.bs.fileinput')}},Fileinput.prototype.clear = function(e) {if (e) e.preventDefault()this.$hidden.val('')this.$hidden.attr('name', this.name)this.$input.attr('name', '')//ie8+ doesn't support changing the value of input with type=file so clone insteadif (isIE) { var inputClone = this.$input.clone(true);this.$input.after(inputClone);this.$input.remove();this.$input = inputClone;} else {this.$input.val('')}this.$preview.html('')this.$element.find('.fileinput-filename').text('')this.$element.addClass('fileinput-new').removeClass('fileinput-exists')if (e !== undefined) {this.$input.trigger('change')this.$element.trigger('clear.bs.fileinput')}},Fileinput.prototype.reset = function() {this.clear()this.$hidden.val(this.original.hiddenVal)this.$preview.html(this.original.preview)this.$element.find('.fileinput-filename').text('')if (this.original.exists) this.$element.addClass('fileinput-exists').removeClass('fileinput-new')else this.$element.addClass('fileinput-new').removeClass('fileinput-exists')this.$element.trigger('reset.bs.fileinput')},Fileinput.prototype.trigger = function(e) {this.$input.trigger('click')e.preventDefault()}// FILEUPLOAD PLUGIN DEFINITION// ===========================var old = $.fn.fileinput$.fn.fileinput = function (options) {return this.each(function () {var $this = $(this),data = $this.data('bs.fileinput')if (!data) $this.data('bs.fileinput', (data = new Fileinput(this, options)))if (typeof options == 'string') data[options]()})}$.fn.fileinput.Constructor = Fileinput// FILEINPUT NO CONFLICT// ====================$.fn.fileinput.noConflict = function () {$.fn.fileinput = oldreturn this}// FILEUPLOAD DATA-API// ==================$(document).on('click.fileinput.data-api', '[data-provides="fileinput"]', function (e) {var $this = $(this)if ($this.data('bs.fileinput')) return$this.fileinput($this.data())var $target = $(e.target).closest('[data-dismiss="fileinput"],[data-trigger="fileinput"]');if ($target.length > 0) {e.preventDefault()$target.trigger('click.bs.fileinput')}})}(window.jQuery);自薦前端干貨：
進階攻略|前端最全的框架總結：https://www.jianshu.com/p/2a8ce7075d79
web開發快速提高工作效率的一些資源：https://www.jianshu.com/p/3cede64e87e5
前端學習的幾個網站：https://www.jianshu.com/p/c36463dd56db
老司機程序員用到的各種網站整理：https://www.jianshu.com/p/c806eabe5bec
進階攻略|前端完整的學習路線：https://www.jianshu.com/p/ed50ee3889d4
八款前端開發人員更輕松的實用在線工具：https://www.jianshu.com/p/267a01fb8bdb
前端幾個常用簡單的開發手冊拿走不謝：https://www.jianshu.com/p/fd9689046a9b
程序員常用的六大技術博客類：https://www.jianshu.com/p/d1614f890282
九款優秀的企業項目協作工具推薦：https://www.jianshu.com/p/7df25e438610
移動端手勢的七個事件庫：https://www.jianshu.com/p/0754d5daa27e
Bootstrap相關優質項目學習清單：https://www.jianshu.com/p/80d229e7fedc
2018前端越來越流行的的技術：https://www.jianshu.com/p/d4af2aa96cee
原文作者：祈澈姑娘
原文鏈接：https://www.jianshu.com/u/05f416aefbe1
創作不易，轉載請告知
90后前端妹子，愛編程，愛運營，愛折騰。
堅持總結工作中遇到的技術問題，堅持記錄工作中所所思所見，歡迎大家一起探討交流。
轉載于:https://www.cnblogs.com/ting6/p/9725714.html
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