用js編寫留言板
阿新 • • 發佈：2020-03-18
本文例項為大家分享了js編寫留言板的具體程式碼，供大家參考，具體內容如下
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
*{
margin:0px;
padding: 0px;
font-size: 12px;
}
.tie{
width: 70px;
height: 30px;
background:pink;
border-radius: 10%;
}
.an{
width: 70px;
height: 30px;
background:pink;
border-radius: 10%;
}
.allFather{
position: fixed;
left: 250px;
top: 0px;
border:1px solid gray;
width: 300px;
height: 300px;
}
.wenb{
width: 260px;
height:25px;
margin-top: 10px;
margin-left: 10px;
color: gray;
}
.two{
margin-top: 10px;
margin-left: 10px;
}
.jj{
width: 120px;
height: 25px;
}
.kk{
margin-top: 10px;
margin-left: 10px;
width: 260px;
}
.an{
margin-top: 10px;
margin-left: 10px;
}
</style>
</head>
<body>
<button class="tie">我要發帖</button>
<ul class="items"></ul>
<div class="allFather" style="display: none;">
<input type="text" value="請輸入標題(1-60個字元)" class="wenb">
<div class="two">
所屬板塊
<select name="" id="wyd" class="jj">
<option value="">英雄聯盟</option>
<option value="">穿越火線</option>
<option value="">qq飛車</option>
<option value="">地下城與勇士</option>
<option value="">逆戰</option>
</select>
</div>
<textarea name="" id="" cols="30" rows="10" class="kk"></textarea>
<button "cz()" class="an">釋出</button>
</div>
</body>
<script type="text/javascript">
//點選時使發帖介面顯示
var tie = document.getElementsByClassName('tie')[0];
tie.onclick = function(){
document.getElementsByClassName('allFather')[0].style.display = "block";
}
//獲得節點上傳
var bt = document.getElementsByClassName("wenb")[0];//獲得標題
var bk = document.getElementById('wyd');//獲得板塊
var jio = document.getElementsByClassName('kk')[0];//獲得多行文字框內容
var time = new Date();//獲得時間
var nian = time.getFullYear();//獲得年份
var dt = time.getMonth();//獲得月份
var r = time.getDate();//獲得日期
var shi = time.getHours();//獲得小時
var fen = time.getMinutes();//獲得分鐘
//實現上傳
var items = document.getElementsByClassName('items')[0];//獲得ul的節點屬性
//實現創造新節點
//焦點聚集事件
bt.onfocus = function(){
bt.value = "";
}
function cz(){
//先建立li的節點
var Li = document.createElement('li');
//然後插入到ul中
items.appendChild(Li);
Li.style.listStyle = "none";
//建立圖片
var img = document.createElement('img');
Li.appendChild(img);//在li中插入圖片
var isz = ['../images/sdg.jpg','../images/dfggfhs.jpg'];//一個圖片的陣列
var index = Math.floor(Math.random()*2);
img.style.width = "50px";
img.style.height = "50px";
img.style.borderRadius = "50%";
img.setAttribute('src',isz[index]);
//建立圖片右邊內容的大盒子
var hfather = document.createElement('div');
Li.appendChild(hfather);//插入大盒子
//實現盒子左浮動
hfather.style.display = "inline-block";
//建立標題
var libt = document.createElement('p');
hfather.appendChild(libt);
libt.style.fontSize = "20px";
libt.style.color = "black";
libt.style.fontWeight = "bloder";
libt.style.marginBottom = "5px";
libt.innerHTML = bt.value;//填充內容
//建立板塊
var text = "";
for(i = 0;i < bk.length; i++) {//下拉框的長度就是它的選項數.
if(bk[i].selected == true) {
text = bk[i].innerHTML;//獲取當前選擇項的值.
}
}
var bkl = document.createElement('span');
hfather.appendChild(bkl);
bkl.style.color = "gray";
bkl.innerHTML = "板塊:" + text;
console.log(bkl.innerHTML);
//建立時間板塊
var tbk = document.createElement('span');
hfather.appendChild(tbk);
tbk.style.marginLeft = "15px";
tbk.style.color = "gray";
tbk.innerHTML = "發表時間:" + nian + "-" + (dt+1) + "-" + r + " " + shi + ":" + fen;
document.getElementsByClassName('allFather')[0].style.display = "none";
bt.value = "請輸入標題(1-60個字元)";
jio.value = "";
bk[0].selected = true;
}
</script>
</html>以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支援我們。