CODEWITHSUNDEEP
javascript
quarks
quarks

Reputation: 35282

clipboardData - Uncaught TypeError: Cannot read property 'length' of undefined

This is the code that throws the error, not sure why, it used to work with Chrome. I'm using Chromium now and its throwing the error Uncaught TypeError: Cannot read property 'length' of undefined

$wnd.addEventListener("paste",processEvent);
        function processEvent(e) {
    if (e.clipboardData && e.clipboardData.getData) {
        console.log("clipboard from event"); // can see in console log
        var items = e.clipboardData.items;
        if(items.length == 0){ // error here

        }
    }
}

So it seems that the problem is var items is undefined

Upvotes: 1

Views: 3622

Answers (1)

Teodor Talov
Teodor Talov

Reputation: 1943

I would check if the items is defined first

$wnd.addEventListener("paste",processEvent);

    function processEvent(e) {

if (e.clipboardData && e.clipboardData.getData) {

    console.log("clipboard from event"); // can see in console log
    var items = e.clipboardData.items;
    if(items != undefined && items.length == 0){ // error here

    }
}
}

But you cannot read or set clip board data in JavaScript

Upvotes: 1

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