[英]When check all space checkbox other checkboxes to be unchecked and disabled
[英]Adding a new checkbox makes the other checkboxes unchecked
當我添加新復選框時,會將舊復選框設置為未選中狀態(即使已選中)。 我該如何解決?
這是我的代碼:
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
<script type="text/javascript">
function zaza() {
document.body.innerHTML+=
'<input type="checkbox" name="vehicle" value="Bike"> I have a bike<br>';
}
</script>
</head>
<body>
<input type="checkbox" name="vehicle" value="Bike"> I have a bike<br>
<p onclick="zaza()">add</p>
</body>
</html>
問題是您重寫正文html:
document.body.innerHTML+=
而是嘗試將復選框附加到正文。
function zaza() { var div = document.createElement('div'); div.innerHTML = '<input type="checkbox" name="vehicle" value="Bike"> I have a bike<br>'; document.body.appendChild(div); }
p { cursor: pointer; }
<input type="checkbox" name="vehicle" value="Bike">I have a bike <br> <p onclick="zaza()">add</p>
您也可以使用文檔片段:
function zaza() { var child = document.createDocumentFragment(); var tmp = document.createElement('input'); tmp.type = 'checkbox'; tmp.name = 'vehicle'; tmp.value = 'Bike'; child.appendChild(tmp); child.appendChild(document.createTextNode('I have a bike')); child.appendChild(document.createElement('br')); document.body.appendChild(child); }
p { cursor: pointer; }
<input type="checkbox" name="vehicle" value="Bike">I have a bike <br> <p onclick="zaza()">add</p>
您要添加具有相同名稱的復選框,必須為每個復選框指定不同的名稱
您需要創建元素並追加到正文中
function zaza() {
var answer = document.createElement('input');
answer.setAttribute('type', 'checkbox');
answer.setAttribute('id', 'answer');
answer.setAttribute('value', 'a');
var answerLabel = document.createElement('label');
answerLabel.setAttribute('for', 'answer'); // this corresponds to the checkbox id
answerLabel.appendChild(answer);
answerLabel.appendChild(document.createTextNode(' I have a bike'));
document.body.appendChild(answerLabel);
linebreak = document.createElement("br");
answerLabel.appendChild(linebreak);
}
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