Correcting teacher:PHPz
Correction status:qualified
Teacher's comments:好, 一如既往, 看的出用心了, 继续加油
本文的看点在于实现了留言的动态插入。
效果图如下:
<style>
/* 留言框 */
form fieldset{
width: 200px;
}
/* 留言区CSS */
.container{
/* border: 1px solid gray; */
max-width: 600px;
}
.container .note{
border: 1px solid burlywood;
display: grid;
}
.container .note div:last-of-type{
text-align: right;
font-size: x-small;
font-family: 'Courier New', Courier, monospace;
}
.container .reply{
border-bottom: 2px solid red;
}
</style>
</head>
<body>
<!-- 1. 改写留言板案例,适当添加CSS美化 2. (选做), 将留言板案例改成"智能客服系统",实现机器人回复 -->
<h4>意见框:</h4>
<form action="#" method="post" name="myForms_1" >
<fieldset>
<legend>请留下您的宝贵意见:</legend>
<textarea name="note" id="note" cols="30" rows="10" placeholder="留言后点击'提交'" autofocus></textarea><br><br>
<button type="button" onclick = "tijiao()">提交</button>
</fieldset>
</form>
<br>
<br>
<!-- 以下为留言区 -->
<p>留言区</p>
<div class="container">
<div class="note">
<div></div>
<div></div>
</div>
<div class="reply"></div>
</div>
// 获取form表单
let forms = document.forms.myForms_1;
// 获取留言区的DOM元素
let container = document.querySelector('.container');
let note = document.querySelector('.note');
let note_1 = note.firstElementChild;
let note_2 = note.lastElementChild;
let reply = document.querySelector('.reply');
// 留言提交函数
function tijiao(){
let trLength = note.children.length;
console.log(trLength);
console.log(forms.note.value);
let value = forms.note.value;
let date = new Date();
let time = date.getFullYear()+"年"+date.getMonth()+"月"+date.getDay()+"日"+date.getHours()+"点"+date.getMinutes()+"分";
// 将内容放到模板字面量里
let noteDiv = `<div class = "note"><div>${value}</div><div>${time}</div></div><div class="reply">"您好,你的留言已经收到"</div>`;
// 将内容插入留言区
container.insertAdjacentHTML("afterbegin",noteDiv);
forms.note.value="";
}