title: what does "prevent this page from creating additional dialogs" mean ? what should i do now?
body: <p>I just made 2 alert in my example.js file</p>
  
  <p><strong>alert("test-javascript1");<br>
  alert("test-javascript2");</strong></p>
  
  <p>nothing else in my file</p>
  
  <p>and in my second alert box I got this message <strong>prevent this page from creating additional dialogs</strong></p>
  
  <p>my question is why this message appears in second alert box and what should i do? should i click on that check box?</p>
  
  <p>prevent this page from creating additional dialogs java script</p>