本文實(shí)例為大家分享了JavaScript實(shí)現(xiàn)輪播圖效果的具體代碼，供大家參考，具體內(nèi)容如下
學(xué)習(xí)筆記（學(xué)校的課設(shè)），實(shí)現(xiàn)了左右切換，按指示點(diǎn)切換、按小圖標(biāo)切換和自動(dòng)切換，但是還有某些功能沒(méi)完善，如：切換到某張圖片后，左右并沒(méi)有切換到前后相應(yīng)的圖片。
先看實(shí)現(xiàn)效果：
代碼僅供參考：
|
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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
|
<!DOCTYPE html><html> <head> <meta charset="UTF-8"> <title></title> <style> .div0{ height: 100px; width: 100%; background-color:black; opacity:0.75; } .div1{ background-image: url(img/bg2.png); height: 400px; width: 100%; } .div2{ height: 200px; width: 100%; background-color:black; opacity:0.75; position: absolute; } .spot{ position: absolute; left: 10%; } .spot_list1{ float: left; border:3px solid wheat; transform:rotate(-30deg); -ms-transform:rotate(-30deg); -moz-transform:rotate(-30deg); -webkit-transform:rotate(-30deg); -o-transform:rotate(-30deg); opacity:0.5; } .spot_list2{ float: left; border:3px solid wheat; transform:rotate(-15deg); -ms-transform:rotate(-15deg); -moz-transform:rotate(-15deg); -webkit-transform:rotate(-15deg); -o-transform:rotate(-15deg); opacity:0.5; } .spot_list3{ float: left; border:3px solid wheat; transform:rotate(28deg); -ms-transform:rotate(28deg); -moz-transform:rotate(28deg); -webkit-transform:rotate(28deg); -o-transform:rotate(28deg); opacity:0.5; } .div1_1{ border: 10px solid gainsboro; width: 830px; height: 300px; left: 10%; top: 10%; position: relative; overflow: hidden; } .btn { width: 100%; height: 80px; position: absolute; margin: 0 auto; top: 120px; } .box_big { position: absolute; height: 400px; vertical-align: middle } #imgList{ list-style: none; position: absolute; } #imgList li{ float: left; margin: 0 10px; } .left_btn, .right_btn { width: 30px; height: 80px; background:gray; line-height: 90px; border-radius: 10px; } .left_btn { float: left; } .right_btn { float: right; } #navDiv{ position: absolute; left: 300px; } #navDiv a{ float: left; width: 15px; height: 15px; border-radius:50%; background-color: black; margin: 0 10px; opacity: 0.5; filter: alpha(opacity=50); } #navDiv a:hover{ background-color: red; } </style> </head> <body> <div class="div0"></div> <div class="div1"> <div class="div1_1"> <div id="navDiv"> <a href="javascript:;" ></a> <a href="javascript:;" ></a> <a href="javascript:;" ></a> <a href="javascript:;" ></a> <a href="javascript:;" ></a> <a href="javascript:;" ></a> </div> <div class="box_big"> <ul id="imgList"> <li><img src="img/1.jpg" id="1" ></li> <li><img src="img/2.jpg" id="2></li> <li><img src="img/3.jpg" id="3"/></li> <li><img src="img/4.jpg" id="4"/></li> <li><img src="img/5.jpg" id="5"/></li> <li><img src="img/6.jpg" id="6"/></li> </ul> </div> <div class="btn"> <div class="left_btn"><img src="img/prev.png"></div> <div class="right_btn"><img src="img/next.png"></div> </div> </div> </div> <!--小標(biāo)圖片--> <div class="div2" onmouseleave="m1()"> <div class="spot"> <img src="img/thumbs/1.jpg" class="spot_list1" id="spot_list1" onmouseover="mouseover(1)" onmouseout="mouseout(1)"> <img src="img/thumbs/2.jpg" class="spot_list2" id="spot_list2" onmouseover="mouseover(2)" onmouseout="mouseout(2)"> <img src="img/thumbs/3.jpg" class="spot_list3" id="spot_list3" onmouseover="mouseover(3)" onmouseout="mouseout(3)"> <img src="img/thumbs/4.jpg" class="spot_list1" id="spot_list4" onmouseover="mouseover(4)" onmouseout="mouseout(4)"> <img src="img/thumbs/5.jpg" class="spot_list2" id="spot_list5" onmouseover="mouseover(5)" onmouseout="mouseout(5)"> <img src="img/thumbs/6.jpg" class="spot_list3" id="spot_list6" onmouseover="mouseover(6)" onmouseout="mouseout(6)"> </div> </div> </body> <script> var box=document.getElementById("1"); //var spot = document.getElementsByClassName("spot_list"); var left_btn=document.getElementsByClassName("left_btn")[0]; var right_btn=document.getElementsByClassName("right_btn")[0]; var time = null; var count = 0; var ids=document.getElementsByTagName("a"); ids[0].style.backgroundColor="red"; var spot_list1=document.getElementById("spot_list1"); spot_list1.setAttribute("class","spot_list3"); spot_list1.style.opacity="0.98"; //左按鈕 left_btn.onclick=function(){ count--; if(count<1){ count=6 } box.src="img/" + count + ".jpg"; for(var i=0;i<ids.length;i++){ ids[i].style.backgroundColor="black"; } ids[count - 1].style.backgroundColor="red"; for(var i=1;i<=6;i++){ var img=document.getElementById("spot_list"+i); if(img.id=="spot_list1" || img.id=="spot_list4"){ img.setAttribute("class","spot_list1"); img.style.opacity="0.5"; }else if(img.id=="spot_list2" || img.id=="spot_list5"){ img.setAttribute("class","spot_list2"); img.style.opacity="0.5"; }else if(img.id=="spot_list3" || img.id=="spot_list6"){ img.setAttribute("class","spot_list3"); img.style.opacity="0.5"; } } var img=document.getElementById("spot_list"+count); if(img.id=="spot_list1" || img.id=="spot_list4"){ img.setAttribute("class","spot_list3"); img.style.opacity="0.98"; }else if(img.id=="spot_list2" || img.id=="spot_list5"){ img.setAttribute("class","spot_list3"); img.style.opacity="0.98"; }else if(img.id=="spot_list3" || img.id=="spot_list6"){ img.setAttribute("class","spot_list1"); img.style.opacity="0.98"; } } //右按鈕 right_btn.onclick=function(){ changeImg(); } // var x=1; var changeImg = function(){ x++; if(x > 6){ x = 1; } box.src = "img/" + x + ".jpg"; for(var i=0;i<ids.length;i++){ ids[i].style.backgroundColor="black"; } ids[x - 1].style.backgroundColor="red"; for(var i=1;i<=6;i++){ var img=document.getElementById("spot_list"+i); if(img.id=="spot_list1" || img.id=="spot_list4"){ img.setAttribute("class","spot_list1"); img.style.opacity="0.5"; }else if(img.id=="spot_list2" || img.id=="spot_list5"){ img.setAttribute("class","spot_list2"); img.style.opacity="0.5"; }else if(img.id=="spot_list3" || img.id=="spot_list6"){ img.setAttribute("class","spot_list3"); img.style.opacity="0.5"; } } var img=document.getElementById("spot_list"+x); if(img.id=="spot_list1" || img.id=="spot_list4"){ img.setAttribute("class","spot_list3"); img.style.opacity="0.98"; }else if(img.id=="spot_list2" || img.id=="spot_list5"){ img.setAttribute("class","spot_list3"); img.style.opacity="0.98"; }else if(img.id=="spot_list3" || img.id=="spot_list6"){ img.setAttribute("class","spot_list1"); img.style.opacity="0.98"; } } //設(shè)置計(jì)時(shí)器 var show; show=setInterval(changeImg, 3000); //圖片切換 function mouseover(n){ clearInterval(show); var img=document.getElementById("spot_list"+n); if(img.id=="spot_list1" || img.id=="spot_list4"){ img.setAttribute("class","spot_list3"); img.style.opacity="0.98"; }else if(img.id=="spot_list2" || img.id=="spot_list5"){ img.setAttribute("class","spot_list3"); img.style.opacity="0.98"; }else if(img.id=="spot_list3" || img.id=="spot_list6"){ img.setAttribute("class","spot_list1"); img.style.opacity="0.98"; } box.src="img/"+n+".jpg"; for(var i=0;i<ids.length;i++){ ids[i].style.backgroundColor="black"; } ids[n-1].style.backgroundColor="red"; } for(let i=0;i<ids.length;i++){ ids[i].onclick=function(){ clearInterval(show); for(var n=0;n<ids.length;n++){ ids[n].style.backgroundColor="black"; } box.src="img/"+(i+1)+".jpg"; ids[i].style.backgroundColor="red"; } } //離開(kāi)小圖標(biāo)時(shí) function mouseout(n){ var img=document.getElementById("spot_list"+n); ids[n-1].style.backgroundColor="black"; if(img.id=="spot_list1" || img.id=="spot_list4"){ img.setAttribute("class","spot_list1"); img.style.opacity="0.5"; }else if(img.id=="spot_list2" || img.id=="spot_list5"){ img.setAttribute("class","spot_list2"); img.style.opacity="0.5"; }else if(img.id=="spot_list3" || img.id=="spot_list6"){ img.setAttribute("class","spot_list3"); img.style.opacity="0.5"; } } function m1(){ //啟動(dòng)計(jì)時(shí)器 show=setInterval(changeImg, 3000); } </script></html> |
以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持服務(wù)器之家。
原文鏈接：https://blog.csdn.net/qq_46601555/article/details/110880707
