js實現鼠標的拖曳效果,文中示例代碼介紹的非常詳細,具有一定的參考價值,感興趣的小伙伴們可以參考一下
效果如下:
下面是代碼:
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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
<!DOCTYPE html> < html lang = "en" > < head > < meta charset = "UTF-8" > < meta name = "viewport" content = "width=device-width, initial-scale=1.0" > < title >鼠標拖曳效果</ title > < style > body{ background:black; } #box{ position:absolute; background: rgb(148, 143, 143); width: 400px; height: 200px; box-sizing: border-box; border: white 2px solid; } .topTitle{ cursor: move; border-bottom: white 2px solid; background: #cccccc; text-align: right; color: white; height: 20px; line-height: 20px; } .content >div{ background: rgb(148, 143, 143); height: 50px; line-height: 50px; color: white; text-align: left; } </ style > </ head > < body > < div id = "box" > < div class = "topTitle" >< a href = "#" >點擊回放拖動軌跡</ a ></ div > < div class = "content" > < div >Drag:</ div > < div >offsetTop:</ div > < div >offsetLeft</ div > </ div > </ div > </ body > < script > var oBox=document.getElementById("box"); var oTopTitle=document.getElementsByClassName("topTitle")[0]; var aDiv= document.querySelectorAll(".content >div"); var offWidth=document.documentElement.clientWidth; var clHight=document.documentElement.clientHeight; var i,t; var state="false"; var oText=document.querySelector(".topTitle a"); oTopTitle.onmousedown=function(even){ var OffsetE=even||window.event; var flag=true; //設立邊界: document.onmousemove=function(even){ state="true"; var ClientE=even||window.event; l=ClientE.clientX-OffsetE.offsetX; t=ClientE.clientY-OffsetE.offsetY; recorde(l,t,flag); if(l< 0 ){ l = 0 ; } if(t<0){ t = 0 ; } if(l>offWidth-oBox.offsetWidth){ l=offWidth-oBox.offsetWidth; } if(t>clHight-oBox.offsetHeight){ t=clHight-oBox.offsetHeight; } oBox.style.left=l+"px"; oBox.style.top=t+"px"; } document.onmouseup=function(){ console.log(1); state="false"; document.onmousemove=null; document.onmouseup=null; } OffsetE.preventDefault(); flag=false; } oText.onclick=function(){ var reback=recorde(l,t); var index=reback.strX.length; setInterval(function(){ if(index< 0 ){ clearInterval(); return; } oBox.style.left = reback .strX[index--] +"px"; oBox.style.top = reback .strY[index--]+"px"; },30); strX=[]; strY=[]; } var strX=[]; var strY=[]; function recorde(offsetTop,offsetLeft,flag){ var text1 = aDiv [1].innerText; aDiv[0] .innerHTML = "Drag:" +"<span style = 'color:yellow' >"+state+"</ span >"; aDiv[1].innerHTML="offsetTop:"+"< span style = 'color:yellow' >"+offsetTop+"</ span >"; aDiv[2].innerHTML="offsetLeft:"+"< span style = 'color:yellow' >"+offsetLeft+"</ span >"; strX.push(offsetTop) ; strY.push(offsetLeft); // console.log(strX); // console.log(strY); return { strX, strY } } </ 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,也希望大家多多支持服務器之家。
原文鏈接:https://blog.csdn.net/weixin_42590083/article/details/111885913