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javascript - 使用 Javascript HTML 和 jQuery 的下拉列表

转载 作者:行者123 更新时间:2023-12-03 05:21:37 24 4
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我正在尝试在 JavaScript 中创建一个函数,该函数将查看今天是哪一天,并且根据某一天会出现某个下拉框列表。但是,由于某种原因它无法工作,并且我不确定代码中的语法错误在哪里。
HTML:

<html>
<head></head>
<body>
<div class="Questions">
<div id="myAnswers" style="display : none">>
<div id="A">
<p><strong>Where are you Studying</strong></p>
<select>
<option value disabled selected>Choose Location</option>
<option value="1">Answer 1</option>
<option value="1">Answer 2</option>
<option value="1">Answer 3</option>
<option value="1">Answer 4</option>
<option value="1">Answer 5</option>
<option value="1">Answer 6</option>
</select>
</div>
<div id="B" style="display : none">
<select>
<option value disabled selected>Choose Answer</option>
<option value="1">Answer 1</option>
<option value="1">Answer 2</option>
<option value="1">Answer 3</option>
<option value="1">Answer 4</option>
</select>
</div>
</div>
</div>
</body>
</html>


JavaScript:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script>
var day= new Date();
var weekday= day.getDay();
$("#A","#B").hide();
function showAnswer(){
if(weekday==3 || weekday==4){
$("#B").show();
}else{
$("#A").show();
}
}
window.onload=showAnswer;
</script>

最佳答案

在代码运行之前需要解决的一些问题:

  1. 正如 @junkfoodjunkie 所指出的,您不需要 style="display:none;"
  2. 使用new Date(),而不是new Day()
  3. 使用 $("#A,#B").hide(),而不是 $("#A","#B")
  4. 请随意使用 jQuery,因为...:)

$(function() {
var day= new Date();
var weekday= day.getDay();
$("#A,#B").hide();
function showAnswer(weekday) {
if(weekday==3 || weekday==4) {
$("#B").show();
} else {
$("#A").show();
}
}
showAnswer( weekday );
console.log( weekday );
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="Questions">
<div id="myAnswers">
<div id="A">
<p><strong>Where are you Studying</strong></p>
<select>
<option value disabled selected>Choose Location</option>
<option value="1">Answer 1</option>
<option value="1">Answer 2</option>
<option value="1">Answer 3</option>
<option value="1">Answer 4</option>
<option value="1">Answer 5</option>
<option value="1">Answer 6</option>
</select>
</div>
<div id="B">
<select>
<option value disabled selected>Choose Answer</option>
<option value="1">Answer 1</option>
<option value="1">Answer 2</option>
<option value="1">Answer 3</option>
<option value="1">Answer 4</option>
</select>
</div>
</div>
</div>

关于javascript - 使用 Javascript HTML 和 jQuery 的下拉列表,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/41353654/

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