it can not access popup.js file after creating a chrome extension

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manifest.json

{
  \"name\": \"Summer\",
  \"version\": \"1.0\",
  \"manifest_version\": 2,
  \"description\": \"This is an addition extensio


                      
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                  抹茶落季        
                
              
                            
                2020-12-11 23:20
              
            
            
                                                                       
You've got manifest_version : 2 in your manifest, so please go read about the changes it introduces....

http://code.google.com/chrome/extensions/manifestVersion.html

You got in the console Refused to execute inline event handler because of Content-Security-Policy, because of the onclick event handler in your html (<input type="button" value="Hesapla" onclick="hesaplama()" />).  With manifest version 2 this isnt allowed, you need to attach the event listner from your js code and not in the html.

Here's a working version of your code....

popup.html  

<!doctype html>
<html>
  <head>
    <title>Getting Started Extension's Popup</title>

    <!-- JavaScript and HTML must be in separate files for security. -->
    <script src="popup.js"></script>
  </head>
  <body>
        <form name="form">
            <div id="sayi1">Sayı 1 :    <input type = "text" name="deger1"></div> 
            <div id="sayi2">Sayı 2 :    <input type = "text" name="deger2"></div> 
            <div id="sonuc">Sonuç :     <input type = "text" name="cevap"></div>
            <div id="button"><input type="button" value="Hesapla" /></div>
        </form>
  </body>
</html>


popup.js  

function hesaplama()
{
var sayı1 = window.document.form.deger1.value;
var sayı2 = window.document.form.deger2.value;
var toplam = (parseFloat(sayı1) + parseFloat(sayı2)) ;
window.document.form.cevap.value = toplam;
}
window.onload = function(){
    document.querySelector('input[value="Hesapla"]').onclick=hesaplama;
}

                                                                        
                                                        
            
            
              
                
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