Problem description:

When developing the Chrome extension, js is needed in the popup.html of the page. When writing js directly in the dynamic binding js event, it will prompt:

Refused to execute the inline script because it violates the following Content Security Policy directive: “script - SRC ‘self’ chrome - the extension - the resource:”..

Solutions:

References external js files to dynamically bind js events in popup.html, for example:

<script type="text/javascript" charset="utf-8" src='test.js'></script>

Test. In js:

var listbox = document.getElementById("showlist");
listbox.onclick=function(){
document.getElementById("player_sidebar").style.width = 100;
}