Simple copy paste function in JavaScript

How I can make simple copy and paste for text in JavaScript? I would like to achieve that when I select some text in a textarea, 开发者_开发技巧then I can click on a button to copy it, then I can go to another page right click in another textarea and choose paste.

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Take a look at this library: https://github.com/zeroclipboard/zeroclipboard

You cannot access the clipboard in JavaScript, meaning flash is more or less your only option.

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Try this:

function copy() {
 if(window.clipboardData) {
   window.clipboardData.clearData();
   window.clipboardData.setData("Text", document.getElementById('txToCopy').value);
 } 
}

function paste() {
 if(window.clipboardData) {   
   document.getElementById('txToPaste').value = window.clipboardData.getData("Text");
 } 
}

<a href="javascript:copy();">Copy</a>
<br />
<input type="text" name="txToCopy" id ="txToCopy"/>
<br /><br />
<a href="javascript:paste();">Paste</a>
<br />
<input type="text" name="txToPaste" id="txToPaste"/>

It's a simple copy and paste function. Its working well in IE.

I hope it helps you.

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Assuming you want to fetch user keyboard actions, you probably want to use Hotkeys: https://github.com/jeresig/jquery.hotkeys

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I think easiest way (and working in all browsers) is to watch keys pressed by user and if he press CTRL+C, save some data you want to copy into some variable.

I mean something like this:

    var myClipboardVariable;

    document.onkeyup = function(e){

        if ((e.key == 'c') && e.ctrlKey){
            // save data (you want to copy) into variable
            myClipboardVariable = ....//some data
        }

        if ((e.key == 'v') && e.ctrlKey){
            // paste saved data
            .... paste your data from variable myClipboardVariable
        }

    }

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have a look at this MDN article.

If you just want to copy user selected text you can do:

document.execCommand("copy");

if you need to select it previously:

document.getElementById('txToPaste').select();

• In my case this code didn't work - it turns out select() don't work for disabled inputs.

• you don't need any special permissions if you run it from an onClick event listener, if you want another event to trigger the copy you are a bit in trubbles.

• it works for me on Firefox and chrome, MDN says it won't work for safari but I haven't tested it.

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You can use ClipBoard API for this,

//copy
navigator.clipboard.writeText("yuuhhhh");
//paste ,this needs user permission 
navigator.clipboard.readText()

Now you can use .then function to do what ever you want.