如何一键发送消息？

Question

Here, When I'm clicking Enter Keyword, it goes to Next Line. Instead of that message have to be sent

Answer 1

大概是这样的：

const textarea = document.getElementById("textinput");
var shift = false;
var text;
var lastkey;
window.onkeydown = function(evt) {
  if (!evt.shiftKey) {
    shift = false;
  }
  else shift = true;
  lastkey = evt.key.toLowerCase();
}
textarea.oninput = function() {
  if (shift == false) {
    if (!lastkey.includes("enter")) text = this.value;
    else document.getElementById("sendButtonID").click();
  }
  else text = this.value;
}

<textarea id="textinput"></textarea>
<button id="sendButtonID" onclick="console.log('Sent: ' + text); textarea.oninput(); textarea.value = ''">Send</button>

如果你按shift回车，就不会发送了。