<script type="text/javascript">
jQuery.fn.extend({
uploadPreview: function (opts) {
var _self = this, _this = $(this);
opts = jQuery.extend({
Img: "Image1",
Width: 100,
Height: 100,
ImgType: ["gif", "jpeg", "jpg", "bmp", "png"],
Callback: function () { }
}, opts || {});
_self.getObjectURL = function (file) {
var url = null;
if (window.createObjectURL != undefined) {
url = window.createObjectURL(file);
} else if (window.URL != undefined) {
url = window.URL.createObjectURL(file);
} else if (window.webkitURL != undefined) {
url = window.webkitURL.createObjectURL(file);
}
return url;
}
_this.change(function () {
if (this.value) {
if (!RegExp(".(" + opts.ImgType.join("|") + ")$", "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();
}
});
}
});
</script>
<script type="text/javascript">
$(function () {
// $("#up").uploadPreview({ Img: "ImgPr", Width: 120, Height: 120 });
$("#<%=FileUpload1.ClientID%>").uploadPreview({ Img: "Img1", Width: 120, Height: 120 });
$("#<%=photopath.ClientID%>").uploadPreview({ Img: "Image1", Width: 120, Height: 120 });
});
</script>
--以下是获取客户端上传文件的名称
<script type="text/javascript"> function checkType() { //得到上传文件的值
var fileName1 = document.getElementById("FileUpload1").value; var fileName2 = document.getElementById("FileUpload2").value; if (fileName1 = document.getElementById("FileUpload1").value) {
//返回String对象中子字符串最后出现的位置. var seat = fileName1.lastIndexOf(".");
//返回位于String对象中指定位置的子字符串并转换为小写. var extension = fileName1.substring(seat).toLowerCase();
//判断允许上传的文件格式 //if(extension!=".jpg"&&extension!=".jpeg"&&extension!=".gif"&&extension!=".png"&&extension!=".bmp"){ //alert("不支持"+extension+"文件的上传!"); //return false; //}else{ //return true; //} // // var allowed = [".jpg", ".gif", ".png", ".bmp", ".jpeg", ".swf", ".flv", ".wmv", ".mp3", ".mp4", ".avi", ".rmvb",".rar",".png",".tga"]; // for (var i = 0; i < allowed.length; i++) { // if (!(allowed[i] != extension)) { // return true; // } // } // alert("不支持" + extension + "格式"); // return false; } else if(fileName2 = document.getElementById("FileUpload2").value) { var seat1 = fileName2.lastIndexOf("."); //返回位于String对象中指定位置的子字符串并转换为小写. var extension = fileName2.substring(seat1).toLowerCase();
//判断允许上传的文件格式 //if(extension!=".jpg"&&extension!=".jpeg"&&extension!=".gif"&&extension!=".png"&&extension!=".bmp"){ //alert("不支持"+extension+"文件的上传!"); //return false; //}else{ //return true; //}
var allowed = [".jpg", ".gif", ".png", ".bmp", ".jpeg", ".swf", ".flv", ".wmv", ".mp3", ".mp4", ".avi", ".rmvb", ".rar", ".png", ".tga"]; for (var i = 0; i < allowed.length; i++) { if (!(allowed[i] != extension)) { return true; } } alert("不支持" + extension + "格式"); return false; }
} </script>