【发布时间】:2019-04-21 05:05:59
【问题描述】:
我有一个包含表单元素的 HTML 页面。表单包含单选类型的输入和末尾的按钮。我希望在单击按钮时调用一个 javascript 方法,该方法获取所选选项的值并重定向到 selectedChoice.html 页面。
这是我的 HTML 页面。
<html>
<head>
<script type="application/javascript" src="../js/navigation.js"></script>
</head>
<body>
<div id="chooseBodyPart">
<form>
<div class="question-text">
<p>Which body part is at dis-ease??</p>
</div>
<input class="radio-option" type="radio" name="bodyPartAtDisease" value="chest"> Chest <br>
<input class="radio-option" type="radio" name="bodyPartAtDisease" value="head"> Head <br>
<input class="radio-option" type="radio" name="bodyPartAtDisease" value="shoulders"> Shoulders <br>
<input class="radio-option" type="radio" name="bodyPartAtDisease" value="eyes"> Eyes <br>
<input class="radio-option" type="radio" name="bodyPartAtDisease" value="ears"> Ears <br>
<input class="radio-option" type="radio" name="bodyPartAtDisease" value="heart"> Heart <br>
<button onclick="redirectToNextPageBasedOnResponse();">Proceed</button>
</form>
</div>
</body>
</html>
下面是我的js。
function getListOfChoices(form) {
var choices = form.getElementsByTagName("input");
return choices;
}
// list of choices should be passed to this method and name of checked choice should be returned.
// In case no choice is selected the return null
function getNameOfCheckedChoice(choices) {
var selectedChoice = null;
for (var choiceNumber = 0; choiceNumber < choices.length; choiceNumber++) {
if (choices[choiceNumber].checked) {
selectedChoice = choices[choiceNumber].value;
break;
}
}
return selectedChoice;
}
function redirectToNextPageBasedOnResponse() {
var divContainingForm = document.getElementById("chooseBodyPart");
var form = divContainingForm.getElementsByTagName("form")[0];
var choices = getListOfChoices(form);
var selectedChoice = getNameOfCheckedChoice(choices);
window.location.href = "http://" + window.location.host + "/html/" + selectedChoice + ".html";
}
代码的工作正是我想要的,但是一旦控制从 redirectToNextPageBasedOnResponse() 返回,URL 不会更改为我编码的内容,而是在现有 URL 中插入一个查询参数,其值等于所选选项。
谁能解释一下发生了什么?
【问题讨论】:
标签: javascript html