admin管理员组

文章数量:1325374

How detect ctrl+q with javascript, this is my code 

<body>
    <p id="x"></p>
    <script>
       window.onkeydown = function() {detect(event);}
       window.onkeypress = function() {res(event);}
       var act = false;
       function detect(event) {
           if(event.ctrlKey) {
              act = true;
           }
           else
               act = false;
       }
        function res(event) {
            if(act) {
                document.getElementById("x").innerHTML = "ctrl " + String.fromCharCode(event.which);
            }
            else
                document.getElementById("x").innerHTML = String.fromCharCode(event.which);
        }
    </script>
</body>

I want do it with javascript only.

How detect ctrl+q with javascript, this is my code 

<body>
    <p id="x"></p>
    <script>
       window.onkeydown = function() {detect(event);}
       window.onkeypress = function() {res(event);}
       var act = false;
       function detect(event) {
           if(event.ctrlKey) {
              act = true;
           }
           else
               act = false;
       }
        function res(event) {
            if(act) {
                document.getElementById("x").innerHTML = "ctrl " + String.fromCharCode(event.which);
            }
            else
                document.getElementById("x").innerHTML = String.fromCharCode(event.which);
        }
    </script>
</body>

I want do it with javascript only.

  • javascript
Share Improve this question edited May 29, 2016 at 13:02 dbf 3,4631 gold badge26 silver badges34 bronze badges asked May 29, 2016 at 12:51 EhsanEhsan 13k3 gold badges26 silver badges46 bronze badges 2
  • 4 This question was already asked: see how-to-find-out-what-character-key-is-pressed – wake-0 Commented May 29, 2016 at 12:55
  • @KevinWallis So we flag it :) – dbf Commented May 29, 2016 at 13:03
Add a ment  | 

1 Answer 1

Reset to default 10

You can detect it using the following function:

document.addEventListener("keydown", function (event) {
  event.stopPropagation();
  event.preventDefault();

  if(event.ctrlKey && event.keyCode == 81)
  {
    console.log("CTRL + Q was pressed!");
  }
  else
  {
    console.log("Something else was pressed.");
  }
});

The stopPropagation() and preventDefault() calls prevent the browser's default behaviour from occurring.

If you want to detect other keys, this page is rather useful: http://asquare/javascript/tests/KeyCode.html

本文标签： how detect CTRLq in javascriptStack Overflow

版权声明：本文标题：how detect CTRL+q in javascript - Stack Overflow 内容由网友自发贡献，该文观点仅代表作者本人， 转载请联系作者并注明出处：http://www.betaflare.com/web/1742192762a2430520.html， 本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容，一经查实，本站将立刻删除。