粒子线条
博客园背景特效（粒子线条，彩带，滴墨水）_博客动态背景-CSDN博客
<!--粒子线条-->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<script type="text/javascript">
!function () {
//封装方法，压缩之后减少文件大小
function get_attribute(node, attr, default_value) {
return node.getAttribute(attr) || default_value;
}
//封装方法，压缩之后减少文件大小
function get_by_tagname(name) {
return document.getElementsByTagName(name);
}
//获取配置参数
function get_config_option() {
var scripts = get_by_tagname("script"),
script_len = scripts.length,
script = scripts[script_len - 1]; //当前加载的script
return {
l: script_len, //长度，用于生成id用
z: get_attribute(script, "zIndex", -1), //z-index
o: get_attribute(script, "opacity", 0.8), //opacity
c: get_attribute(script, "color", "255,255,255"), //color
n: get_attribute(script, "count", 350) //count
};
}
//设置canvas的高宽
function set_canvas_size() {
canvas_width = the_canvas.width = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth,
canvas_height = the_canvas.height = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight;
}
//绘制过程
function draw_canvas() {
context.clearRect(0, 0, canvas_width, canvas_height);
//随机的线条和当前位置联合数组
var e, i, d, x_dist, y_dist, dist; //临时节点
//遍历处理每一个点
random_points.forEach(function (r, idx) {
r.x += r.xa,
r.y += r.ya, //移动
r.xa *= r.x > canvas_width || r.x < 0 ? -1 : 1,
r.ya *= r.y > canvas_height || r.y < 0 ? -1 : 1, //碰到边界，反向反弹
context.fillRect(r.x - 0.5, r.y - 0.5, 1, 1); //绘制一个宽高为1的点
//从下一个点开始
for (i = idx + 1; i < all_array.length; i++) {
e = all_array[i];
// 当前点存在
if (null !== e.x && null !== e.y) {
x_dist = r.x - e.x; //x轴距离 l
y_dist = r.y - e.y; //y轴距离 n
dist = x_dist * x_dist + y_dist * y_dist; //总距离, m
dist < e.max && (e === current_point && dist >= e.max / 2 && (r.x -= 0.03 * x_dist, r.y -= 0.03 * y_dist), //靠近的时候加速
d = (e.max - dist) / e.max,
context.beginPath(),
context.lineWidth = d / 2,
context.strokeStyle = "#000000",
context.moveTo(r.x, r.y),
context.lineTo(e.x, e.y),
context.stroke());
}
}
}), frame_func(draw_canvas);
}
//创建画布，并添加到body中
var the_canvas = document.createElement("canvas"), //画布
config = get_config_option(), //配置
canvas_id = "c_n" + config.l, //canvas id
context = the_canvas.getContext("2d"), canvas_width, canvas_height,
frame_func = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame || function (func) {
window.setTimeout(func, 1000 / 40);
}, random = Math.random,
current_point = {
x: null, //当前鼠标x
y: null, //当前鼠标y
max: 20000 // 圈半径的平方
},
all_array;
the_canvas.id = canvas_id;
the_canvas.style.cssText = "position:fixed;top:0;left:0;z-index:" + config.z + ";opacity:" + config.o;
get_by_tagname("body")[0].appendChild(the_canvas);
//初始化画布大小
set_canvas_size();
window.onresize = set_canvas_size;
//当时鼠标位置存储，离开的时候，释放当前位置信息
window.onmousemove = function (e) {
e = e || window.event;
current_point.x = e.clientX;
current_point.y = e.clientY;
}, window.onmouseout = function () {
current_point.x = null;
current_point.y = null;
};
//随机生成config.n条线位置信息
for (var random_points = [], i = 0; config.n > i; i++) {
var x = random() * canvas_width, //随机位置
y = random() * canvas_height,
xa = 2 * random() - 1, //随机运动方向
ya = 2 * random() - 1;
// 随机点
random_points.push({
x: x,
y: y,
xa: xa,
ya: ya,
max: 6000 //沾附距离
});
}
all_array = random_points.concat([current_point]);
//0.1秒后绘制
setTimeout(function () {
draw_canvas();
}, 100);
}();
</script>
</body>
</html>
博客运行时间统计
博客运行时间统计代码-腾讯云开发者社区-腾讯云
<!--博客运行时间-->
<script>
function secondToDate(second) {
if (!second) {
return 0;
}
var time = new Array(0, 0, 0, 0, 0);
if (second >= 365 * 24 * 3600) {
time[0] = parseInt(second / (365 * 24 * 3600));
second %= 365 * 24 * 3600;
}
if (second >= 24 * 3600) {
time[1] = parseInt(second / (24 * 3600));
second %= 24 * 3600;
}
if (second >= 3600) {
time[2] = parseInt(second / 3600);
second %= 3600;
}
if (second >= 60) {
time[3] = parseInt(second / 60);
second %= 60;
}
if (second > 0) {
time[4] = second;
}
return time;
}
</script>
<script type="text/javascript" language="javascript">
function setTime() {
// 博客创建时间秒数，时间格式中，月比较特殊，是从0开始的，所以想要显示5月，得写4才行，如下
var create_time = Math.round(new Date(Date.UTC(2022, 8, 5, 0, 0, 0))
.getTime() / 1000);
// 当前时间秒数,增加时区的差异
var timestamp = Math.round((new Date().getTime() + 8 * 60 * 60 * 1000) / 1000);
currentTime = secondToDate((timestamp - create_time));
currentTimeHtml = currentTime[0] + '年' + currentTime[1] + '天'
+ currentTime[2] + '时' + currentTime[3] + '分' + currentTime[4]
+ '秒';
document.getElementById("htmer_time").innerHTML = currentTimeHtml;
}
setInterval(setTime, 1000);
</script>
运行时间：<span id="htmer_time" style="color: black;"></span>
