//js中的html结构
<a class="downLoadA" style="display: inline-block;float:left;width: 40px;height: 40px;"><img id="downLoadImg" style="width:40px;height:40px;border:none;" type="button" class="downLoadImg_btn" src="/ngcs/src/js/communication/huawei/media/clientArea/downLoadImg.png"/></a</div>
//js如下完整代码;
//点击调用浏览器的本地下载功能
var downLoadImg = function() { //获取图片的路径 var imgPathSrc = $('#headImg',this.$el).attr("src"); if(imgPathSrc.indexOf("_min") != "-1") { var temp = imgPath.indexOf("_min").split("_min"); var part1 = temp[0]; var part2 = temp[1]; imgPathSrc = part1 + part2; } function myBrowser() { var userAgent = navigator.userAgent; //取得浏览器的userAgent字符串 var isOpera = userAgent.indexOf("Opera") > -1; //判断是否IE浏览器 if(userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1) { return "IE"; }; //判断是否IE浏览器 if(userAgent.indexOf("Trident") > -1) { return "Edge"; } } //调用当前时间作为图片的名字 function getNowFormatDate() { var date = new Date(); var month = date.getMonth() + 1; var strDate = date.getDate(); if (month >= 1 && month <= 9) { month = "0" + month; } if (strDate >= 0 && strDate <= 9) { strDate = "0" + strDate; } var currentdate = date.getFullYear() + month + strDate + date.getHours()+ date.getMinutes()+ date.getSeconds()+randNum(0, 9)+randNum(0, 9)+randNum(0, 9)+randNum(0, 9); return currentdate; } function randNum(x, y) { return Math.floor(Math.random()*(y - x + 1) + x); }//弹框的点击事件调用本地下载功能
function DownLoadReportIMG(imgPathURL) { //如果隐藏IFRAME不存在,则添加 if (!document.getElementById("IframeReportImg")){ iframeIEDown = $('<iframe style="display:none;" id="IframeReportImg" src='+imgPathURL+' name="IframeReportImg" width="0" height="0" src="about:blank"></iframe>'); iframeIEDown.appendTo("body"); } if(navigator.userAgent.toLowerCase().indexOf('se 2.x')>-1&&navigator.userAgent.toLowerCase().indexOf('trident')){ setTimeout(function(){ document.frames["IframeReportImg"].document.execCommand("SaveAs"); $('#IframeReportImg').remove(); },90); }else{ setTimeout(function(){ document.frames["IframeReportImg"].document.execCommand("SaveAs"); $('#IframeReportImg').remove(); },30); } } if(myBrowser() === "IE" || myBrowser() === "Edge") { DownLoadReportIMG(imgPathSrc) } else { //!IE $('.downLoadA').attr('href', imgPathSrc); if(navigator.userAgent.indexOf("Firefox") > -1){ $('.downLoadA').attr('download', getNowFormatDate()+imgPathSrc.substr(-4)); }else{ $('.downLoadA').attr('download', getNowFormatDate()); } } }