该插件支持IE6+,chrome,firefox等主流浏览器
用法
jQuery.fn.extend({ uploadPreview: function (opts) { var _self = this, _this = $(this); opts = jQuery.extend({ Img: "imgPreview", Width: 100, Height: 100, ImgType: ["gif", "jpeg", "jpg", "bmp", "png"], Callback: function () { } }, opts || {}); _self.getObjectURL = function (file) { var url = null; if (window.createObjectURL != undefined) { url = window.createObjectURL(file); } else if (window.URL != undefined) { url = window.URL.createObjectURL(file); } else if (window.webkitURL != undefined) { url = window.webkitURL.createObjectURL(file); } return url; }; _this.change(function () { if (this.value) { if (!RegExp("\.(" + opts.ImgType.join("|") + ")$", "i").test(this.value.toLowerCase())) { alert("选择文件错误,图片类型必须是" + opts.ImgType.join(",") + "中的一种"); this.value = ""; return false; } if (navigator.userAgent.indexOf("MSIE") > -1) { try { $("#" + opts.Img).attr('src', _self.getObjectURL(this.files[0])); } catch (e) { var src = ""; var obj = $("#" + opts.Img); var div = obj.parent("div")[0]; _self.select(); if (top != self) { window.parent.document.body.focus(); } else { _self.blur(); } src = document.selection.createRange().text; document.selection.empty(); obj.hide(); obj.parent("div").css({ 'filter': 'progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale)', 'width': opts.Width + 'px', 'height': opts.Height + 'px' }); div.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = src; } } else { $("#" + opts.Img).attr('src', _self.getObjectURL(this.files[0])); } opts.Callback(); } }); } });
用法
引入jquery和该脚本
<div id="iconUrlDiv" > <img id="iconUrlImg" style="display: inherit;" /> </div> <input type="file" id="uploadfile" name="uploadfile" >
$("#uploadfile").uploadPreview({ Img: "iconUrlImg", Width: 80, Height: 80 });
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