2023年6月21日发(作者：)
如何实现上传多个图⽚并依次展⽰_js前端实现多图图⽚上传预览的两个⽅法（推荐）...⼀、将图⽚转成icon码的实现⽅式html代码：js代码//图⽚预览功能function previewImage(file,imgNum){var MAXWIDTH = 200;var MAXHEIGHT = 200;var div = mentById('preview'+imgNum);if ( && [0]){TML ='';var img = mentById('imghead'+imgNum+''); = function(){var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, Width, Height); = ; = ;// Left = +'px';Top = +'px';}var reader = new FileReader(); = function(evt){ = ;}DataURL([0]);}else //{var sFilter='filter:progid:mageLoader(sizingMethod=scale,src="';();var src = Range().text;TML = '';var img = mentById('imghead2');('mageLoader').src = src;var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, Width, Height);status =('rect:'++','++','++','+);TML = "}}function clacImgZoomParam( maxWidth, maxHeight, width, height ){var param = {top:0, left:0, width:width, height:height};if( width>maxWidth || height>maxHeight ){rateWidth = width / maxWidth;rateHeight = height / maxHeight;if( rateWidth > rateHeight ){ = maxWidth; = (height / rateWidth);}else{ = (width / rateHeight); = maxHeight;}} = ((maxWidth - ) / 2); = ((maxHeight - ) / 2);return param;}⼆、使⽤js的另⼀种⽅法⼀次选中多个图⽚预览展⽰测试页⾯//下⾯⽤于多图⽚上传预览功能function setImagePreviews(avalue) {var docObj = mentById("doc");var dd = mentById("dd");TML = "";var fileList = ;for (var i = 0; i < ; i++) {TML += "";var imgObjPreview = mentById("img"+i);if ( && [i]) {//⽕狐下，直接设img属性y = 'block'; = '150px'; = '180px';// = [0].getAsDataURL();//⽕狐7以上版本不能⽤上⾯的getAsDataURL()⽅式获取，需要⼀下⽅式 = ObjectURL([i]);}else {//IE下，使⽤滤镜();var imgSrc = Range().text;alert(imgSrc)var localImagId = mentById("img" + i);//必须设置初始⼤⼩ = "150px"; = "180px";//图⽚异常的捕捉，防⽌⽤户修改后缀来伪造图⽚try { = "progid:mageLoader(sizingMethod=scale)";("mageLoader").src = imgSrc;}catch (e) {alert("您上传的图⽚格式不正确，请重新选择!");return false;}y = 'none';();}}return true;}以上这篇js前端实现多图图⽚上传预览的两个⽅法(推荐)就是⼩编分享给⼤家的全部内容了，希望能给⼤家⼀个参考，也希望⼤家多多⽀持脚本之家。
2023年6月21日发(作者：)
如何实现上传多个图⽚并依次展⽰_js前端实现多图图⽚上传预览的两个⽅法（推荐）...⼀、将图⽚转成icon码的实现⽅式html代码：js代码//图⽚预览功能function previewImage(file,imgNum){var MAXWIDTH = 200;var MAXHEIGHT = 200;var div = mentById('preview'+imgNum);if ( && [0]){TML ='';var img = mentById('imghead'+imgNum+''); = function(){var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, Width, Height); = ; = ;// Left = +'px';Top = +'px';}var reader = new FileReader(); = function(evt){ = ;}DataURL([0]);}else //{var sFilter='filter:progid:mageLoader(sizingMethod=scale,src="';();var src = Range().text;TML = '';var img = mentById('imghead2');('mageLoader').src = src;var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, Width, Height);status =('rect:'++','++','++','+);TML = "}}function clacImgZoomParam( maxWidth, maxHeight, width, height ){var param = {top:0, left:0, width:width, height:height};if( width>maxWidth || height>maxHeight ){rateWidth = width / maxWidth;rateHeight = height / maxHeight;if( rateWidth > rateHeight ){ = maxWidth; = (height / rateWidth);}else{ = (width / rateHeight); = maxHeight;}} = ((maxWidth - ) / 2); = ((maxHeight - ) / 2);return param;}⼆、使⽤js的另⼀种⽅法⼀次选中多个图⽚预览展⽰测试页⾯//下⾯⽤于多图⽚上传预览功能function setImagePreviews(avalue) {var docObj = mentById("doc");var dd = mentById("dd");TML = "";var fileList = ;for (var i = 0; i < ; i++) {TML += "";var imgObjPreview = mentById("img"+i);if ( && [i]) {//⽕狐下，直接设img属性y = 'block'; = '150px'; = '180px';// = [0].getAsDataURL();//⽕狐7以上版本不能⽤上⾯的getAsDataURL()⽅式获取，需要⼀下⽅式 = ObjectURL([i]);}else {//IE下，使⽤滤镜();var imgSrc = Range().text;alert(imgSrc)var localImagId = mentById("img" + i);//必须设置初始⼤⼩ = "150px"; = "180px";//图⽚异常的捕捉，防⽌⽤户修改后缀来伪造图⽚try { = "progid:mageLoader(sizingMethod=scale)";("mageLoader").src = imgSrc;}catch (e) {alert("您上传的图⽚格式不正确，请重新选择!");return false;}y = 'none';();}}return true;}以上这篇js前端实现多图图⽚上传预览的两个⽅法(推荐)就是⼩编分享给⼤家的全部内容了，希望能给⼤家⼀个参考，也希望⼤家多多⽀持脚本之家。
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