JavaScript实现进度条的具体代码，供大家参考，具体内容如下
进度条实现介绍
使用JavaScript实现进度条功能。
原理：通过鼠标移动事件，获取鼠标移动的距离。
步骤：
（1）html 中 div 布局
（2）css 样式编写
（3）JavaScript特效编写
html代码
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
|
<body> <!-- 整体盒子 --> <div id="box"> <!-- 进度条整体 --> <div id="progress"> <!-- 进度条长度 --> <div id="progress_head"></div> <!-- 进度条移动条 --> <span id="span"></span> <div> <!-- 显示数据 --> <div id="percentage">0%</div> </div></body> |
css样式
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
<style> /* 整体样式，消除默认样式 */ body{ margin:0; padding:0; } #box{ position:relative; width:1000px; height:30px; margin:100px auto; } #progress{ position:relative; width:900px; height:30px; background:#999999; border-radius:8px; margin:0 auto; } #progress_head{ width:0px; height:100%; border-top-left-radius:8px; border-bottom-left-radius:8px; background:#9933CC; } span{ position:absolute; width:20px; height:38px; background:#9933CC; top:-4px; left:0px; cursor:pointer; } #percentage{ position:absolute; line-height:30px; text-align:center; right:-44px; top:0; } </style> |
JavaScript代码
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
<script> //js获取节点 var oProgress=document.getElementById('progress'); var oProgress_head=document.getElementById('progress_head'); var oSpan=document.getElementById('span'); var oPercentage=document.getElementById('percentage') //添加事件 鼠标按下的事件 oSpan.onmousedown=function(event){ var event=event || window.event; var x=event.clientX-oSpan.offsetLeft; document.onmousemove=function(){ var event=event || window.event; var wX=event.clientX-x; if(wX<0) { wX=0; }else if(wX>=oProgress.offsetWidth-20) { wX=oProgress.offsetWidth - 20; } oProgress_head.style.width=wX+'px'; oSpan.style.left=wX+'px'; oPercentage.innerHTML=parseInt(wX/(oProgress.offsetWidth-20)*100)+'%'; return false; }; document.onmouseup=function(){ document.onmousemove=null; }; }; </script> |
效果图
整体代码
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
<!DOCTYPE><html lang="en"><head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>进度条</title> <style> /* 整体样式，消除默认样式 */ body{ margin:0; padding:0; } #box{ position:relative; width:1000px; height:30px; margin:100px auto; } #progress{ position:relative; width:900px; height:30px; background:#999999; border-radius:8px; margin:0 auto; } #progress_head{ width:0px; height:100%; border-top-left-radius:8px; border-bottom-left-radius:8px; background:#9933CC; } span{ position:absolute; width:20px; height:38px; background:#9933CC; top:-4px; left:0px; cursor:pointer; } #percentage{ position:absolute; line-height:30px; text-align:center; right:-44px; top:0; } </style></head><body> <!-- 整体盒子 --> <div id="box"> <!-- 进度条整体 --> <div id="progress"> <!-- 进度条长度 --> <div id="progress_head"></div> <!-- 进度条移动条 --> <span id="span"></span> <div> <!-- 显示数据 --> <div id="percentage">0%</div> </div></body></html><script> //js获取节点 var oProgress=document.getElementById('progress'); var oProgress_head=document.getElementById('progress_head'); var oSpan=document.getElementById('span'); var oPercentage=document.getElementById('percentage') //添加事件 鼠标按下的事件 oSpan.onmousedown=function(event){ var event=event || window.event; var x=event.clientX-oSpan.offsetLeft; document.onmousemove=function(){ var event=event || window.event; var wX=event.clientX-x; if(wX<0) { wX=0; }else if(wX>=oProgress.offsetWidth-20) { wX=oProgress.offsetWidth - 20; } oProgress_head.style.width=wX+'px'; oSpan.style.left=wX+'px'; oPercentage.innerHTML=parseInt(wX/(oProgress.offsetWidth-20)*100)+'%'; return false; }; document.onmouseup=function(){ document.onmousemove=null; }; }; </script> |
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服务器之家。
原文链接：https://blog.csdn.net/weixin_44134972/article/details/85332929
