阻止 vue textarea 多行文本 换行

<textarea placeholder="点此输入会议直播链接" v-model="link"  @keydown="checkEnter($event)"></textarea>
checkEnter:function(e) {
  var et = e || window.event;
  var keycode = et.charCode || et.keyCode;
  if (keycode == 13) {
    if (window.event) {
      window.event.returnValue = false;
    } else {
      e.preventDefault(); //for firefox
    }
  }
},

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