[英]Text Area dynamically created and then gone within a second
這是我的JSP頁面。 我正在從用戶那里獲取信息,並希望在用戶輸入問題編號時生成文本區域。
<%@ 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>
<link rel="stylesheet" href="./CSS/assignmentcss.css">
<script src="./JS/assignment.js"></script>
</head>
<body>
<jsp:include page="teacher_navbar.jsp"></jsp:include><br><br><br>
<div class="container">
<form method="post" name="form2">
<div class="row">
<div class="col-name">
<label for="section">Section</label>
</div>
<div class="col-value">
<input type="text" id="section">
</div>
</div>
<div class="row">
<div class="col-name">
<label for="assignmentname">Assignment Name</label>
</div>
<div class="col-value">
<input type="text" id="assignmentname">
</div>
</div>
<div class="row">
<div class="col-name">
<label for="questionnumber">Number Of Questions</label>
</div>
<div class="col-value">
<input type="text" id="question_number" max="10" min="1"/>
</div>
<div class="col-value">
<button onclick="generate()">Generate Assignment</button>
</div>
</div>
<div id="content">
</div>
</form>
</div>
</body>
</html>
這是我的JS頁面。 單擊按鈕時調用函數generate()。
function generate(){
var x = document.getElementById("question_number").value;
var content = document.getElementById("content");
var pa= new Array();
var box = new Array();
while(content.hasChildNodes()){
content.removeChild(content.lastChild);
}
var i=0;
while(i<x){
pa[i]=document.createElement("p");
var box =document.createElement("textarea");
box.style.minHeight="100px";
box.style.minWidth="300px";
box.style.animation="moveToPos 5s 1";
box.style.animationFillMode="forwards";
pa[i].appendChild(box);
content.appendChild(pa[i]);
i++;
}
}
問題:單擊“生成”時,文本區域正在動態生成,但僅顯示一秒鍾,然后消失。
I have tried your code and discovered that the problem is coming from your form tag if you remove the form tag it will work just fine.
<html>
<head>
</head>
<body>
<div class="container">
<div class="row">
<div class="col-name">
<label for="section">Section</label>
</div>
<div class="col-value">
<input type="text" id="section">
</div>
</div>
<div class="row">
<div class="col-name">
<label for="assignmentname">Assignment Name</label>
</div>
<div class="col-value">
<input type="text" id="assignmentname">
</div>
</div>
<div class="row">
<div class="col-name">
<label for="questionnumber">Number Of Questions</label>
</div>
<div class="col-value">
<input type="text" id="question_number" max="10" min="1"/>
</div>
<div class="col-value">
<button onclick="generate()">Generate Assignment</button>
</div>
</div>
<div id="content">
</div>
</div>
<script>
function generate(){
var x = document.getElementById("question_number").value;
var content = document.getElementById("content");
var pa= new Array();
var box = new Array();
while(content.hasChildNodes()){
content.removeChild(content.lastChild);
}
var i=0;
while(i<x){
pa[i]=document.createElement("p");
var box =document.createElement("textarea");
box.style.minHeight="100px";
box.style.minWidth="300px";
box.style.animation="moveToPos 5s 1";
box.style.animationFillMode="forwards";
pa[i].appendChild(box);
content.appendChild(pa[i]);
i++;
}
}
</script>
</body>
</html>
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.