我是编程初学者，今天我需要你的帮助！（请:'()我想创建一个调查，所以我开始编码，出现错误，我在互联网上搜索了很多，但没有解决方案。有我的html和js代码。/*the code isn't finish, this error block me(code name is sur.js*/let choi;let choix1 = 1;let choix2 = 1;let choix3 = 1;function submit(){console.log(choi);}function changer(){getElementById('survey');choi= sel.options[sel.selectedIndex];console.log(choi);}<!DOCTYPE html><html><head><title>Robotale v8 : surveys</title><link rel="icon" href="https://www.mediafire.com/convkey/a940/qp7vky5trrp8hmzzg.jpg"/></head><body style="background-color:#000000"><br><a href="Index.html"><img src="https://www.mediafire.com/convkey/6586/bb0x08ff0tvjhepzg.jpg" onclick="redirection()"/></a><br><font face= "Verdana" size="4" color="#3399ff">The Robotale Website is here for your Robotale time!!!</p><br><p>Surveys:</p><br><form><label for="survey">Your feedback about this website!!!How do you like it?</label><select id="survey" name="survey" type="datalist" onchange="changer();"><datalist id="surveys"><option value="No">Nope!!!</option><option value="Yes">Yes!!!</option><option value="liv">THIS WEBSITE IS MY LIFE IF YOU DELETE IT I WILL DIE!!!(calm down please)</option></datalist></form><a href="Index.html">link to principal page</a><br><br><input type="submit" value="Send your feedback" id="food" onclick="submit()"><br><script src"sur.js"></script></html>
1 回答
Helenr
TA贡献1780条经验 获得超4个赞
您没有指定对选择器 - 的不完整调用getElementById('survey');。规则是使用document，并且你需要这样写 - document.getElementById('survey');。
接下来，您有一个未定义的变量sel，我的意思是该变量填充了来自 的数据document.getElementById('survey');。结果是这样的——let sel = document.getElementById('survey');
现在运行此代码并尝试从下拉列表中选择一个值。没有错误。
应该是这样吗？
/*the code isn't finish, this error block me(code name is sur.js*/
let choi;
let choix1 = 1;
let choix2 = 1;
let choix3 = 1;
function submit(){
console.log(choi);
}
function changer(){
let sel = document.getElementById('survey');
choi= sel.options[sel.selectedIndex];
console.log(choi);
}
<!DOCTYPE html>
<html>
<head>
<title>Robotale v8 : surveys</title>
<link rel="icon" href="https://www.mediafire.com/convkey/a940/qp7vky5trrp8hmzzg.jpg"/>
</head>
<body style="background-color:#000000">
<br>
<a href="Index.html">
<img src="https://www.mediafire.com/convkey/6586/bb0x08ff0tvjhepzg.jpg" onclick="redirection()"/>
</a>
<br>
<font face= "Verdana" size="4" color="#3399ff">The Robotale Website is here for your Robotale time!!!</p>
<br>
<p>Surveys:</p>
<br>
<form>
<label for="survey">Your feedback about this website!!!How do you like it?</label>
<select id="survey" name="survey" type="datalist" onchange="changer();">
<datalist id="surveys">
<option value="No">Nope!!!</option>
<option value="Yes">Yes!!!</option>
<option value="liv">THIS WEBSITE IS MY LIFE IF YOU DELETE IT I WILL DIE!!!(calm down please)</option>
</datalist>
</form>
<a href="Index.html">link to principal page</a>
<br>
<br>
<input type="submit" value="Send your feedback" id="food" onclick="submit()">
<br>
<script src"sur.js"></script>
</html>
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