filedialog - Capturing the close of the browse for file window with JavaScript - Stack Overflow

admin管理员组

文章数量:1315061

I am using infile to ask the users to browse for a file on their machine. Is there way to catch if the window is closed without file being selected?
For example if x is clicked.

<input type="file" name="data" id="inFile" size="15" style="display:none" onchange="handleFiles(this)"/>

Thanks

I am using infile to ask the users to browse for a file on their machine. Is there way to catch if the window is closed without file being selected?
For example if x is clicked.

<input type="file" name="data" id="inFile" size="15" style="display:none" onchange="handleFiles(this)"/>

Thanks

• javascript
• filedialog

Share Improve this question Follow edited Aug 22, 2012 at 21:22 Bergi 666k161161 gold badges1k1k silver badges1.5k1.5k bronze badges asked Aug 22, 2012 at 21:12 setliosetlio 72622 gold badges1414 silver badges3232 bronze badges 1

• Please clarify whether you mean the open-file-dialog or the whole browser window. – Bergi Commented Aug 22, 2012 at 21:30

Add a ment  | 

3 Answers 3

Sorted by: Reset to default 2

With the solution from HTML input file selection event not firing upon selecting the same file, I think you can use this:

<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)
}

What I did is: Start timer after the user opens the window, and in that timed function I check every 0.5 sec if the file has been selected with boolean var. I stop the timer as soon as user selects the file or HTML5 DnD occurs. I hope this helps someone.

<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);
    }   
}

I think the blur event will do it:

<input
  type="file"
  onchange="changed=true; handleFiles(this)"
  onblur="if(!changed) alert('nothing selected'); changed=false;"
/>

本文标签： filedialogCapturing the close of the browse for file window with JavaScriptStack Overflow