Catch paste input

Christoffer_Winterkvist_65992 0
Viewed 259292

I'm looking for a way to sanitize input that I paste into the browser, is this possible to do with jQuery?

I've managed to come up with this so far:

$(this).live(pasteEventName, function(e) {
 // this is where i would like to sanitize my input
 return false;
}

Unfortunately my development has come to a screeching hold because of this "minor" issue. I would really make me a happy camper if someone could point me to the right direction.

paste sanitize jquery
17 Answers

For cross platform compatibility, it should handle oninput and onpropertychange events:

$ (something).bind ("input propertychange", function (e) {
    // check for paste as in example above and
    // do something
})
user_13235280

I sort of fixed it by using the following code:

$("#editor").live('input paste',function(e){
    if(e.target.id == 'editor') {
        $('<textarea></textarea>').attr('id', 'paste').appendTo('#editMode');
        $("#paste").focus();
        setTimeout($(this).paste, 250);
    }
});

Now I just need to store the caret location and append to that position then I'm all set... I think :)

Christoffer_Winterkvist_659920

Hmm... I think you can use e.clipboardData to catch the data being pasted. If it doesn't pan out, have a look here.

$(this).live("paste", function(e) {
    alert(e.clipboardData); // [object Clipboard]
});
user_732780

This is getting closer to what you might want.

function sanitize(s) {
  return s.replace(/\bfoo\b/g, "~"); 
};

$(function() {
 $(":text, textarea").bind("input paste", function(e) {
   try {
     clipboardData.setData("text",
       sanitize(clipboardData.getData("text"))
     );
   } catch (e) {
     $(this).val( sanitize( $(this).val() ) );
   }
 });
});

Please note that when clipboardData object is not found (on browsers other then IE) you are currently getting the element's full value + the clipboard'ed value.

You can probably do some extra steps to dif the two values, before an input & after the input, if you really are only after what data was truly pasted into the element.

Mister_Lucky_815890

See this example: http://www.p2e.dk/diverse/detectPaste.htm

It essentialy tracks every change with oninput event and then checks if it’s a paste by string comparison. Oh, and in IE there’s an onpaste event. So:

$ (something).bind ("input paste", function (e) {
    // check for paste as in example above and
    // do something
})
Ilya_Birman_658130

This proved to be quite illusive. The value of the input is not updated prior to the execution of the code inside the paste event function. I tried calling other events from within the paste event function but the input value is still not updated with the pasted text inside the function of any events. That is all events apart from keyup. If you call keyup from within the paste event function you can sanitize the pasted text from within the keyup event function. like so...

$(':input').live
(
    'input paste',
    function(e)
    {
        $(this).keyup();
    }
);

$(':input').live
(
    'keyup',
    function(e)
    {
        // sanitize pasted text here
    }
);

There is one caveat here. In Firefox, if you reset the input text on every keyup, if the text is longer than the viewable area allowed by the input width, then resetting the value on every keyup breaks the browser functionality that auto scrolls the text to the caret position at the end of the text. Instead the text scrolls back to the beginning leaving the caret out of view.

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