function chg (){
if(document.getElementById("mydiv").style.display=="none"){
document.getElementById("mydiv").style.display=""
}
}
</script>
<input type="button" value="评论" onclick="chg()">
<div id="mydiv" style="display:none">
<form id="myform" >
<input type="textbox" id="pinlun" >
<input type="submit" id="sbmt" value="提交" >
</form>
</div>
只能装一下的，一刷新就没了<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
.box{
width:500px
height:300px
border:1px solid #ccc
padding:10px
box-sizing:border-box
}
.write{
margin-top:50px
}
textarea{
width:500px
height:94px
box-sizing:border-box
}
</style>
<script type="text/javascript" src="js/jquery-2.1.0.js" ></script>
</head>
<body>
<div>
<h2>评论区</h2>
<div class="box">
<!--<p>我是评论内容1</p>-->
</div>
</div>
<div class="write">
<textarea id="textblock"></textarea>
<button class="submit">提交内容</button>
</div>
<script>
$(function(){
var arr = []
function writecon(){
var str = ''
for(var i=0 i<arr.length i++){
str += "<p>" + arr[i] + "</p>"
}
$(".box").append(str)
}
writecon()
$(".submit").click(function(){
var textblock = $("#textblock").val()
if(textblock){
arr.push(textblock)
var str = "<p>" + textblock + "</p>"
$(".box").append(str)
$("#textblock").val("")
console.log(arr)
}else{
alert("请输入内容")
}
})
})
</script>
</body>
</html>
