我正在使用infile来要求用户在他们的机器上浏览文件。如果在没有选择文件的情况下关闭窗口,是否有办法捕获?
例如,如果单击x。
<input type="file" name="data" id="inFile" size="15" style="display:none" onchange="handleFiles(this)"/>
由于
答案 0 :(得分:1)
使用HTML input file selection event not firing upon selecting the same file的解决方案,我认为你可以使用它:
<input type="file" name="data" id="inFile" />
var fileElem = document.getElementById("inFile");
var fileSelected = null;
fileElem.onclick = function(e) {
fileSelected = this.value;
this.value = null;
});
/* or use this in your browse() function:
fileElem.value = null;
*/
fileElem.onchange = function(e) { // will trigger each time
handleFileDialog(this.value === fileSelected);
};
function handleFileDialog(changed) {
// boolean parameter if the value has changed (new select) or not (canceled)
}
答案 1 :(得分:0)
我做的是: 用户打开窗口后启动计时器,在该计时功能中,如果用boolean var选择了文件,我每0.5秒检查一次。一旦用户选择文件或发生HTML5 DnD,我就会停止计时器。我希望这有助于某人。
<div id="uploader"><input type="file" name="data" id="inFile" size="15" style="display:none" onchange="handleFiles(this)"/></div>
<button dojoType="dijit.form.Button" id="fileSelect" type="button" onmouseup="browse();">Browse</button>
var fileselected = false;
function handleFiles(input){
fileselected = true;
//use input
}
var interval;
function browse(){
fileselected = false;
var fileElem = document.getElementById("inFile");
fileElem.click();
interval = setInterval(setdiv, 500);
}
function setdiv(){
if(!fileselected){
//do staff until user decides to Dnd or browse for file again
clearInterval(interval);
}
}
答案 2 :(得分:-2)
我认为blur
事件会这样做:
<input
type="file"
onchange="changed=true; handleFiles(this)"
onblur="if(!changed) alert('nothing selected'); changed=false;"
/>