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主頁 > 知識庫 > asp.net 簡便無刷新文件上傳系統

asp.net 簡便無刷新文件上傳系統

ps：flash實現的效果是好得多，但這不是我研究的范圍，也沒什么可比性。

兼容：ie6/7/8, firefox 3.5.5, opera 10.01, safari 4.0.3, chrome 3.0
效果預覽

選擇文件	操作	狀態
文件上傳
	重置	選擇文件
	重置	選擇文件
	重置	選擇文件

ps：由于需要后臺，要測試系統請下載實例測試。
ps2：在完整實例文件中，還有一個文件屬性查看實例。

if ( this.timeout > 0 ) {
this._timer = setTimeout( $$F.bind(this._timeout, this), this.timeout * 1000 );
}

var iframename = "QUICKUPLOAD_" + QuickUpload._counter++,
iframe = document.createElement( $$B.ie ? "iframe name=\"" + iframename + "\">" : "iframe");
iframe.name = iframename;
iframe.style.display = "none";

var finish = this._fFINISH = $$F.bind(this._finish, this);
if ( $$B.ie ) {
iframe.attachEvent( "onload", finish );
} else {
iframe.onload = $$B.opera ? function(){ this.onload = finish; } : finish;
}

body>div id="msg">狀態：/div>/body>
script>
var msg = document.getElementById("msg");
var iframe = document.createElement("iframe");
iframe.onload = function(){ msg.innerHTML += "onload,"; }
document.body.appendChild(iframe);
iframe.src = "http://cloudgamer.cnblogs.com/"
/script>

body>
div id="msg">狀態：/div>
form action="http://cloudgamer.cnblogs.com/" target="ifr">
/form>
/body>
script>
var msg = document.getElementById("msg");
var iframe = document.createElement("iframe");
iframe.name = "ifr";
iframe.onload = function(){ msg.innerHTML += "onload,"; }
document.body.appendChild(iframe);
msg.innerHTML += "submit,";
document.forms[0].submit();
/script>

$$.extend(form, {
target: this._iframe.name, method: "post", encoding: "multipart/form-data"
});

$$D.setStyle(form, {
padding: 0, margin: 0, border: 0,
backgroundColor: "transparent", display: "inline"
});

for ( name in this.parameter ) {
var input = form[name];
if ( !input ) {
input = document.createElement("input");
input.name = name; input.type = "hidden";
form.appendChild(input);
}
input.value = this.parameter[name];
newInputs[name] = input;
delete oldInputs[name];
}

body>
iframe id="ifr" name="ifr">/iframe>
form action="http://cloudgamer.cnblogs.com/" target="ifr">
/form>
/body>
script>
document.forms[0].submit();
document.getElementById("ifr").src = "";
/script>

form target="ifr" action="x">
input id="btn" type="submit" value="click">
/form>
iframe name="ifr" id="ifr">/iframe>
script>
document.getElementById("btn").onclick = function(){
document.getElementById("ifr").onload = function(){
this.parentNode.removeChild(this);
};
}
/script>

if ( $$B.firefox ) {
setTimeout($$F.bind(this._removeIframe, this), 0);
} else {
this._removeIframe();
}

var form = this._form, parent = form.parentNode;
if ( parent ) {
parent.insertBefore(this.file, form); parent.removeChild(form);
}
this._form = this._inputs = null;

with(file.parentNode.insertBefore(document.createElement('form'), file)){
appendChild(file); reset(); removeNode(false);
}

form>input id="test" name="file" type="file">/form>
script>
document.getElementById("test").onchange = function(){
this.select(); document.selection.clear();
this.form.submit();
}
/script>

try{
var info = eval("(" + iframe.contentWindow.document.body.innerHTML + ")");
show("上傳完成");
}catch(e){
show("上傳失敗"); stop(); return;
}