在页面加载时隐藏按钮

Question

在页面加载时隐藏按钮

在不使用jQuery的情况下,"Process"当访问者访问页面时,我希望我的按钮与文本不可见(在所有浏览器中).当他们从下拉菜单中选择一个值而不是一个值时,first entry (blank)或者Have a Baby为了使按钮可见.

<html>
<head>
<title>Life Event Picker Calendar</title>
<script>
// Function being used to hide/unhide the button
function changeMessage(oElement) {
    if (oElement.value == "100") {
        document.getElementById("btn").style.visibility = "hidden";
    } else if (oElement.value == "0") {
        document.getElementById("btn").style.visibility = "hidden";
    } else {
        document.getElementById("btn").style.visiblity = "visible";
    }
}
</script>
</head>
<body>

...
...
<!-- Based on the selection here - the button below would be made visible --> 
<select id="leave" onchange="changeMessage(this);">
  <option value="0"></option>
  <option value="5">Get Married</option>
  <option value="100">Have a Baby</option>
  <option value="90">Adopt a Child</option>
  <option value="15">Retire</option>
  <option value="15">Military Leave</option>
  <option value="15">Medical Leave</option>
</select>

 <!-- The button in question -->
 <button id="btn" onclick="getInfo()"type="button">Process</button>

...
... 

</body>
</html>

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Answer 1

Gra*_*mpa 6

尝试将该style="visibility:hidden;"属性添加到按钮.另外,考虑使用display:none而display:inline-block不是visibility.

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