javascript - 试图创建一个下拉菜单，但它不适用于 javascript

Question

This is what it looks like when cliked on

This is the expectation when clicked on what i used to display this is the :hover event but i want it clickable

如果有任何可能，请尽快帮助修复 Javascript 编码

var content = document.getElementById("settingsBar");
var button = document.getElementById("show-more");

button.onclick = function() {
  if (content.className == "drop") {
    content.className = "";
  } else {
    content.className = "drop";
  }
};

#settingsBar {
  width: 100%;
  position: fixed;
  z-index: 1;
  background-color: #000;
  max-height: 56px;
  overflow: hidden;
  -webkit-transition: all 0.7s;
  -moz-transition: all 0.7s;
  transition: all 0.7s;
}
#settingsBar.drop {
  max-height: 1000px;
  color: #fff;
  -webkit-transition: all 0.7s;
  -moz-transition: all 0.7s;
  transition: all 0.7s;
}
#show-more i {
  padding-left: 48%;
  padding-top: 15px;
  color: #fff;
  -webkit-transition: color 0.7s;
  -moz-transition: color 0.7s;
  transition: color 0.7s;
}

<link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
<div id="settingsBar">
  <a href="#" id="show-more"><i class="material-icons large">settings</i></a>
  <br/>
  <iframe src="http://www.pigigram.com/account_settings.php" scrolling="no" frameborder="0" width="100%"></iframe>
</div>

Basicly What i want is to have it open the content to display the iframe and allow them to use the settings

Answer 1

button.onclick = fucntion(); {

你拼错了函数这个词