vue全局监听组合键

mounted() {

let code = 0;

let code2 = 0;

document.onkeydown = function (e) {

  let evn = e || event;
  
  let key = evn.keyCode || evn.which || evn.charCode;
  
  if (key === 17) {
  
    code = 1;
    
  }
  
  if (key === 13) {
  
    code2 = 1;
    
  }
  
  if (code === 1 && code2 === 1) {
  
    console.log("Ctrl+Enter");
    code = 0;
    code2 = 0;
  }
  
};

document.onkeyup = function (e) {

  if (e.keyCode === 17) {
  
    code = 0;
    
  }
  
  if (e.keyCode === 13) {
  
    code2 = 0;
    
  }
  
};

},`

• 其他两种情况

• ctrl 和 alt

  mounted() {
  document.onkeydown = function (event) {
    let key = window.event.keyCode;
    if (event.ctrlKey) {
      // 监听ctrl
      window.event.preventDefault(); //关闭浏览器默认快捷键
      switch (key) {
        case 81:
          console.log("ctrl+q");
          break;
  
          default:
            break;
        }
      } else if (event.altKey)
      {
       // 监听alt
        window.event.preventDefault(); //关闭浏览器快捷键
        switch (key) {
          case 81:
            console.log("alt+q");
            break;
  
          default:
            break;
        }
      }
    };
  },`