今天闲着无聊,写了个弹幕APP,主要实现以下几个功能:1.点击“弹幕发射”或回车可以输
今天闲着无聊,写了个弹幕APP,主要实现以下几个功能:
1.点击“弹幕发射”或回车可以输出弹幕到弹幕墙上。 2.弹幕的运行轨迹是从弹幕墙的最右边到最左边,Y轴的数值在弹幕墙的高度内随机,颜色HEX随机,速度随机。 3.右侧的表格可以储存弹幕内容以及弹幕的发射时间,越靠近现在的越靠前。 4.点击“清除弹幕”可以把弹幕墙内的所有弹幕清除掉,但不会影响到表格中的数据。 5.如果弹幕长度过长(我设置的是6个字符),则超过规定长度之外的弹幕内容都会由“...”代替,并放入表格中。但弹幕墙中的内容依然是完整的。
HTML代码:
<div class="frame">
<div class="row">
<div class="col-xs-8 col-sm-8 col-md-8 col-lg-8 danmu-box-frame">
<div class="danmu-box">
</div>
</div>
<div class="col-xs-4 col-sm-4 col-md-4 col-lg-4 danmu-table-frame">
<table class="table .table-condensed danmu-table">
<thead>
<tr>
<th>
弹幕内容
</th>
<th>
弹幕时间
</th>
</tr>
</thead>
<tbody>
</tbody>
</table>
</div>
</div>
<div class="danmu-form">
<form class="form-inline">
<input type="text" class="form-control" placeholder="开始吐槽!">
<button type="button" class="btn btn-primary shoot">
发射弹幕!
</button>
<button type="button" class="btn btn-danger clear">
清空弹幕
</button>
</form>
</div>
</div>
<hr>
<footer>
Designed By
<a href="http://blog.csdn.net/alenhhy" target="_blank">
Alen Hu
</a>
</footer>
*使用了Bootstrap3框架。
JQuery部分:
$(document).ready(function() {
$(".shoot").on("click", startDanmu);
$("form").keypress(function(event) {
if (event.keyCode === 13) {
event.preventDefault();
startDanmu();
}
});
$(".clear").on("click", clearDanmu);
});
//get random number in certain range
function RandomNum(Min, Max) {
var Range = Max - Min;
var Rand = Math.random();
var num = Min + Math.round(Rand * Range);
return num;
}
//time number add 0 before if <10
function plusZero(x) {
if (x < 10) {
x = "0" + x;
} else {
x = x;
}
return x;
}
//start danmu
function startDanmu() {
var message = $("input");
var messageVal = message.val();
var danmuMessage = "<span class='danmu-message'>" + messageVal + "</span>";
//get random color HEX
//u can also save the colors u want by array
var color = RandomNum(100000, 999999);
//get random danmu speed
var speed = RandomNum(10000, 20000);
//get random position Y
//danmu box height is 450, we set the danmu position Y max 400 in case it blocks the subtitle
var positionY = RandomNum(50, 400);
if (messageVal.length > 0) {
//insert danmu message into danmu box
$(".danmu-box").prepend(danmuMessage);
//have to use first() cuz we prepend the message, u can try what's gonna happen if no first()
//set it's style
$(".danmu-message").first().css({
"right": "0",
"top": positionY,
"color": "#" + color
});
//set it's animation
//from right 0 to left 0
//hide it after move
$(".danmu-message").first().animate({
left: '0px',
},
speed,
function() {
$(this).fadeOut();
});
//get danmu time
var time = new Date();
var month = time.getMonth() + 1;
var day = time.getDay();
var hour = time.getHours();
var minute = time.getMinutes();
var danmuTime = plusZero(month) + "-" + plusZero(day) + " " + plusZero(hour) + ":" + plusZero(minute);
//insert danmu message to table
if (messageVal.length > 6) {
messageVal = messageVal.substring(0, 6) + "...";
}
var messageToTable = "<tr><td>" + messageVal + "</td><td>" + danmuTime + "</td></tr>";
$(".danmu-table > tbody").prepend(messageToTable);
} else {}
//empty the input
message.val("");
}
//clear danmu box
function clearDanmu() {
$(".danmu-box").html("");
}
DEMO在这儿,欢迎来FORK:Danmu APP。
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。
jQuery 弹幕 APP