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如果选择选项1,应该出现两个按钮。如果选择了选项2,应该出现一个按钮和一个输入栏。如果选择了选项3,则应显示两个输入字段。有了这个代码,没有什么改变。如何使用不同的输入字段创建动态选择选项?
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
function vidType() {
var s1 = document.getElementById(select1);
if (s1.value == "Video File") {
var btn1 = document.createElement("BUTTON");
var t = document.createTextNode("UPLOAD IMAGE");
btn1.appendChild(t);
var btn2 = document.createElement("BUTTON");
var t2 = document.createTextNode("UPLOAD VIDEO");
btn2.appendChild(t2);
} else if (s1.value == "Youtube Video") {
var btn3 = document.createElement("BUTTON");
var t3 = document.createTextNode("UPLOAD IMAGE");
btn3.appendChild(t3);
var x = document.createElement("INPUT");
x.setAttribute("type", "text");
x.setAttribute("value", "Paste URL here");
document.body.appendChild(x);
} else if (s1.value == "Other Video") {
var y = document.createElement("INPUT");
y.setAttribute("type", "text");
y.setAttribute("value", "Paste URL of the Video");
document.body.appendChild(y);
var z = document.createElement("INPUT");
z.setAttribute("type", "text");
z.setAttribute("value", "Paste thumbnail URL here");
document.body.appendChild(z);
}
}
</script>
</head>
<body>
Choose Video Type:
<select id="select1" name="select1" onchange="vidType()">
<option value="Select Type">Select Video Type</option>
<option value="Video File">Video File</option>
<option value="Youtube Video">Youtube Video</option>
<option value="Other Video">Other Video</option>
</select>
</body>
</html>
如果你打开你的控制台(F12),你会明白为什么它不起作用。 – adeneo
提示:'select1'需要用引号表示...... – adeneo
感谢您指出... –