我对此功能有问题"Uncaught ReferenceError: sync is not defined at HTMLInputElement.onkeyup"

Question

该函数不起作用，控制台向我显示以下消息：未捕获的引用错误：同步未在 HTMLInputElement.onkeyup 中定义

`https://jsfiddle.net/sfzc68w0/`    

我希望文本区域将包含来自输入的文本

Answer 1

那是因为你有一个 html 事件 onkeyup 的功能

<div class="form-group col-md-2">
  <label class="control-label" for="i1">Adresa de email</label>
  <input type="text" id="i1" name="i1" value="" class="form-control input-sm"     
  [HERE===>]onkeyup="sync()">

  <span class="invalid-feedback"></span>
</div>
<div class="form-group col-md-2">
  <label class="control-label" for="i2">Numarul de telefon</label>
  <input type="text" id="i2" name="i2" value="" class="form-control input-sm" 
  [HERE===>]onkeyup="sync()">
  <span class="invalid-feedback"></span>
</div>
<div class="form-group col-md-2">
  <label class="control-label" for="i3">Județ</label>
  <input type="text" id="i3" name="i3" value="" class="form-control input-sm"     
  [HERE===>]onkeyup="sync()">
  <span class="invalid-feedback"></span>
</div>
<div class="form-groenter code hereup col-md-12">
  <label for="body" class="label">Descriere - date de contact, adresă, stare etc.</label>
  <textarea name="body" class="form-control" rows="6"></textarea>
  <span class="invalid-feedback"></span>
</div>

你必须从那里删除它，或者只是在窗口对象(在窗口范围内(上创建"sync(("函数。