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uni-app左侧菜单,左右联动,侧边导航分类

12264人阅读 2022/1/25 17:09 总访问:294568 评论:0 收藏:2 手机
分类: 移动开发


效果图:



代码:

  1. <template>
  2. <view class="page-body" :style="'height:' + height + 'px'">
  3. <scroll-view class="nav-left" scroll-y :style="'height:' + height + 'px'" :scroll-top="scrollLeftTop" scroll-with-animation>
  4. <view class="nav-left-item" @click="categoryClickMain(index)" :key="index" :class="index == categoryActive ? 'active' : ''" v-for="(item, index) in classifyData">
  5. {{ item.name }}
  6. </view>
  7. </scroll-view>
  8. <scroll-view 
  9. class="nav-right" 
  10. scroll-y 
  11. :scroll-top="scrollTop" 
  12. @scroll="scroll" 
  13. :style="'height:' + height + 'px'" 
  14. scroll-with-animation
  15. >
  16. <view v-for="(foods, index) in classifyData" :key="index" class="box">
  17. <view style="margin-bottom:10upx">{{foods.name}}</view>
  18. <view :id="i == 0 ? 'first' : ''" class="nav-right-item" v-for="(item, i) in foods.foods" :key="i" @click="cart(item.name)">
  19. <image src="https://img.tnblog.net/bigclassimg/1net.png" />
  20. <view>{{ item.name }}</view>
  21. </view>
  22. </view>
  23. </scroll-view>
  24. </view>
  25. </template>
  26. <script>
  27. import classifyData from '../../common/classify.data.js';
  28. export default {
  29. data() {
  30. return {
  31. name'wkiwi',
  32. height0,
  33. categoryActive0,
  34. scrollTop0,
  35. scrollLeftTop0,
  36. // scrollHeight: 0,
  37. classifyData: classifyData,
  38. arr: [05841168175223362805327438584442491153805734620366727017], //初始值,后边计算会根据手机适配覆盖
  39. leftItemHeight: 51//49行会计算出新值进行覆盖
  40. navLeftHeight: 0//左边scroll-view 内层nav的总高度
  41. diff: 0//左边scroll-view 内层nav的总高度与视口之差
  42. tabBarHeight: 0 //如果此页面为Tab页面,自己改变高度值,,一般tab高度为51
  43. };
  44. },
  45. created() {
  46. //如果你的分类数据为后台异步获取请 将下方代码放置你的数据回调中
  47. // this.$nextTick(()=>{
  48. //  this.getHeightList();
  49. // })
  50. },
  51. onLoadfunction({
  52. this.height = uni.getSystemInfoSync().windowHeight - this.tabBarHeight;
  53. },
  54. onReady() {
  55. this.getHeightList();
  56. },
  57. methods: {
  58. getHeightList() {
  59. let _this = this;
  60. let selectorQuery = uni.createSelectorQuery();
  61. selectorQuery.selectAll('.nav-left-item').boundingClientRect(function(rects{
  62. _this.leftItemHeight = rects[0].height;
  63. _this.navLeftHeight = _this.leftItemHeight * classifyData.length;
  64. _this.diff = _this.navLeftHeight - _this.height;
  65. });
  66. selectorQuery
  67. .selectAll('.box')
  68. .boundingClientRect(function(rects{
  69. let arr = [0];
  70. let top = 0;
  71. rects.forEach(function(rect{
  72. //  rect.id      // 节点的ID
  73. //  rect.dataset // 节点的dataset
  74. //  rect.left    // 节点的左边界坐标
  75. //  rect.right   // 节点的右边界坐标
  76. //  rect.top     // 节点的上边界坐标
  77. //  rect.bottom  // 节点的下边界坐标
  78. //  rect.width   // 节点的宽度
  79. //  rect.height  // 节点的高度
  80. top += rect.height;
  81. arr.push(top);
  82. });
  83. console.log(arr);
  84. _this.arr = arr;
  85. })
  86. .exec();
  87. },
  88. scroll(e) {
  89. let _this = this;
  90. if (this.timeoutId) {
  91. clearTimeout(this.timeoutId);
  92. }
  93. this.timeoutId = setTimeout(function({
  94. //节流
  95. _this.scrollHeight = e.detail.scrollTop + 1 + _this.height / 2;
  96. //+1不要删除,解决最后一项某种情况下翻到底部,左边按钮并不会切换至最后一个
  97. //若想使切换参考线为屏幕顶部请删除 _this.height/2
  98. for (let i = 0; i < _this.arr.length; i++) {
  99. let height1 = _this.arr[i];
  100. let height2 = _this.arr[i + 1];
  101. if (!height2 || (_this.scrollHeight >= height1 && _this.scrollHeight < height2)) {
  102. _this.categoryActive = i;
  103. _this.diff > 0 && (_this.scrollLeftTop = Math.round((_this.categoryActive * _this.diff) / (classifyData.length - 1)));
  104. return false;
  105. }
  106. }
  107. _this.categoryActive = 0;
  108. _this.timeoutId = undefined;
  109. }, 10);
  110. },
  111. categoryClickMain(index) {
  112. this.categoryActive = index;
  113. this.scrollTop == this.arr[index] ? (this.scrollTop = this.scrollTop + 1) : (this.scrollTop = this.arr[index]); //防止两次相等造成点击不触发滚动时间
  114. },
  115. cartfunction(text{
  116. uni.showToast({
  117. title: text,
  118. icon'none'
  119. });
  120. }
  121. },
  122. components: {}
  123. };
  124. </script>
  125. <style>
  126. .page-body {
  127. display: flex;
  128. background#fff;
  129. overflow: hidden;
  130. }
  131. .nav {
  132. display: flex;
  133. width100%;
  134. }
  135. .nav-left {
  136. width25%;
  137. background#fafafa;
  138. }
  139. .nav-left-item {
  140. height100upx;
  141. border-right: solid 1px #f1f1f1;
  142. border-bottom: solid 1px #f1f1f1;
  143. font-size30upx;
  144. display: flex;
  145. align-items: center;
  146. justify-content: center;
  147. }
  148. .nav-left-item:last-child {
  149. border-bottom: none;
  150. }
  151. .nav-right {
  152. width75%;
  153. }
  154. .box {
  155. display: block;
  156. overflow: hidden;
  157. border-bottom20upx solid #f3f3f3;
  158. /* min-height: 100vh; */
  159. /*若您的子分类过少想使得每个子分类占满屏请放开上边注视 */
  160. }
  161. .box:last-child {
  162. border: none;
  163. min-height100vh;
  164. }
  165. .nav-right-item {
  166. width30%;
  167. height220upx;
  168. float: left;
  169. text-align: center;
  170. padding11upx;
  171. font-size28upx;
  172. background#fff;
  173. }
  174. .nav-right-item image {
  175. width120upx;
  176. height120upx;
  177. }
  178. .active {
  179. color#ff80ab;
  180. background#fff;
  181. border-right0;
  182. }
  183. ::-webkit-scrollbar {
  184. width0;
  185. height0;
  186. color: transparent;
  187. }
  188. </style>


测试数据classify.data.js:

  1. export default [{
  2. "name""女装推荐啊哇..",
  3. "foods": [{
  4. "name""A字裙xxxxxqqqqqqqqqssxxxxqqsdsdfsdfdsfdsfdsfdsfdsfdsfdsfdfgfdgfdg",
  5. "key""A字裙",
  6. "icon""http://img.kiwifruits.cn/classify/1/1.jpg",
  7. "cat"10
  8. },
  9. {
  10. "name""T恤",
  11. "key""T恤",
  12. "icon""http://img.kiwifruits.cn/classify/1/2.jpg",
  13. "cat"10
  14. },
  15. {
  16. "name""半身裙",
  17. "key""半身裙",
  18. "icon""http://img.kiwifruits.cn/classify/1/3.jpg",
  19. "cat"10
  20. },
  21. {
  22. "name""衬衫",
  23. "key""衬衫",
  24. "icon""http://img.kiwifruits.cn/classify/1/4.jpg",
  25. "cat"10
  26. },
  27. {
  28. "name""短裙",
  29. "key""短裙",
  30. "icon""http://img.kiwifruits.cn/classify/1/5.jpg",
  31. "cat"10
  32. },
  33. {
  34. "name""阔腿裤",
  35. "key""阔腿裤",
  36. "icon""http://img.kiwifruits.cn/classify/1/6.jpg",
  37. "cat"10
  38. },
  39. {
  40. "name""连衣裙",
  41. "key""连衣裙",
  42. "icon""http://img.kiwifruits.cn/classify/1/7.jpg",
  43. "cat"10
  44. },
  45. {
  46. "name""妈妈装",
  47. "key""妈妈装",
  48. "icon""http://img.kiwifruits.cn/classify/1/8.jpg",
  49. "cat"10
  50. },
  51. {
  52. "name""牛仔裤",
  53. "key""牛仔裤",
  54. "icon""http://img.kiwifruits.cn/classify/1/9.jpg",
  55. "cat"10
  56. },
  57. {
  58. "name""情侣装",
  59. "key""情侣装",
  60. "icon""http://img.kiwifruits.cn/classify/1/10.jpg",
  61. "cat"10
  62. },
  63. {
  64. "name""休闲裤",
  65. "key""休闲裤",
  66. "icon""http://img.kiwifruits.cn/classify/1/11.jpg",
  67. "cat"10
  68. },
  69. {
  70. "name""雪纺衫",
  71. "key""雪纺衫",
  72. "icon""http://img.kiwifruits.cn/classify/1/12.jpg",
  73. "cat"10
  74. },
  75. {
  76. "name""防晒衣",
  77. "key""防晒衣",
  78. "icon""http://img.kiwifruits.cn/classify/1/13.jpg",
  79. "cat"10
  80. },
  81. {
  82. "name""礼服/婚纱",
  83. "key""礼服婚纱",
  84. "icon""http://img.kiwifruits.cn/classify/1/14.jpg",
  85. "cat"10
  86. }
  87. ]
  88. },
  89. {
  90. "name""美食",
  91. "foods": [{
  92. "name""火锅",
  93. "key""火锅",
  94. "icon""http://img.kiwifruits.cn/classify/2/1.jpg",
  95. "cat"6
  96. },
  97. {
  98. "name""糕点饼干",
  99. "key""糕点饼干",
  100. "icon""http://img.kiwifruits.cn/classify/2/2.jpg",
  101. "cat"6
  102. },
  103. {
  104. "name""坚果果干",
  105. "key""坚果果干",
  106. "icon""http://img.kiwifruits.cn/classify/2/3.jpg",
  107. "cat"6
  108. },
  109. {
  110. "name""酒类",
  111. "key""酒类",
  112. "icon""http://img.kiwifruits.cn/classify/2/4.jpg",
  113. "cat"6
  114. },
  115. {
  116. "name""辣条",
  117. "key""辣条",
  118. "icon""http://img.kiwifruits.cn/classify/2/5.jpg",
  119. "cat"6
  120. },
  121. {
  122. "name""大礼包",
  123. "key""大礼包",
  124. "icon""http://img.kiwifruits.cn/classify/2/6.jpg",
  125. "cat"6
  126. },
  127. {
  128. "name""精品茗茶",
  129. "key""茶",
  130. "icon""http://img.kiwifruits.cn/classify/2/7.jpg",
  131. "cat"6
  132. },
  133. {
  134. "name""休闲食品",
  135. "key""休闲食品",
  136. "icon""http://img.kiwifruits.cn/classify/2/8.jpg",
  137. "cat"6
  138. },
  139. {
  140. "name""糖果巧克力",
  141. "key""糖果巧克力",
  142. "icon""http://img.kiwifruits.cn/classify/2/9.jpg",
  143. "cat"6
  144. },
  145. {
  146. "name""方便速食",
  147. "key""方便速食",
  148. "icon""http://img.kiwifruits.cn/classify/2/10.jpg",
  149. "cat"6
  150. },
  151. {
  152. "name""营养代餐",
  153. "key""营养代餐",
  154. "icon""http://img.kiwifruits.cn/classify/2/11.jpg",
  155. "cat"6
  156. },
  157. {
  158. "name""粮油副食",
  159. "key""粮油",
  160. "icon""http://img.kiwifruits.cn/classify/2/12.jpg",
  161. "cat"6
  162. },
  163. {
  164. "name""生鲜水果",
  165. "key""水果",
  166. "icon""http://img.kiwifruits.cn/classify/2/13.jpg",
  167. "cat"6
  168. },
  169. {
  170. "name""饮品",
  171. "key""饮品",
  172. "icon""http://img.kiwifruits.cn/classify/2/14.jpg",
  173. "cat"6
  174. }
  175. ]
  176. },
  177. {
  178. "name""美妆",
  179. "foods": [{
  180. "name""化妆刷",
  181. "key""化妆刷",
  182. "icon""http://img.kiwifruits.cn/classify/3/1.jpg",
  183. "cat"3
  184. },
  185. {
  186. "name""粉底",
  187. "key""粉底",
  188. "icon""http://img.kiwifruits.cn/classify/3/2.jpg",
  189. "cat"3
  190. },
  191. {
  192. "name""洗发护发",
  193. "key""洗发护发",
  194. "icon""http://img.kiwifruits.cn/classify/3/3.jpg",
  195. "cat"3
  196. },
  197. {
  198. "name""美容工具",
  199. "key""美容工具",
  200. "icon""http://img.kiwifruits.cn/classify/3/4.jpg",
  201. "cat"3
  202. },
  203. {
  204. "name""眼部护理",
  205. "key""眼部护理",
  206. "icon""http://img.kiwifruits.cn/classify/3/5.jpg",
  207. "cat"3
  208. },
  209. {
  210. "name""眉妆",
  211. "key""眉妆",
  212. "icon""http://img.kiwifruits.cn/classify/3/6.jpg",
  213. "cat"3
  214. },
  215. {
  216. "name""卸妆品",
  217. "key""卸妆品",
  218. "icon""http://img.kiwifruits.cn/classify/3/7.jpg",
  219. "cat"3
  220. },
  221. {
  222. "name""基础护肤",
  223. "key""基础护肤",
  224. "icon""http://img.kiwifruits.cn/classify/3/8.jpg",
  225. "cat"3
  226. },
  227. {
  228. "name""眼妆",
  229. "key""眼妆",
  230. "icon""http://img.kiwifruits.cn/classify/3/9.jpg",
  231. "cat"3
  232. },
  233. {
  234. "name""唇妆",
  235. "key""唇妆",
  236. "icon""http://img.kiwifruits.cn/classify/3/10.jpg",
  237. "cat"3
  238. },
  239. {
  240. "name""面膜",
  241. "key""面膜",
  242. "icon""http://img.kiwifruits.cn/classify/3/11.jpg",
  243. "cat"3
  244. },
  245. {
  246. "name""沐浴用品",
  247. "key""沐浴用品",
  248. "icon""http://img.kiwifruits.cn/classify/3/12.jpg",
  249. "cat"3
  250. },
  251. {
  252. "name""护肤套装",
  253. "key""护肤套装",
  254. "icon""http://img.kiwifruits.cn/classify/3/13.jpg",
  255. "cat"3
  256. },
  257. {
  258. "name""防晒品",
  259. "key""防晒品",
  260. "icon""http://img.kiwifruits.cn/classify/3/14.jpg",
  261. "cat"3
  262. },
  263. {
  264. "name""美甲",
  265. "key""美甲",
  266. "icon""http://img.kiwifruits.cn/classify/3/15.jpg",
  267. "cat"3
  268. }
  269. ]
  270. },
  271. {
  272. "name""读书笔记,英语阅读",
  273. "foods": [{
  274. "name""垃圾袋",
  275. "key""垃圾袋",
  276. "icon""http://img.kiwifruits.cn/classify/4/1.jpg",
  277. "cat"4
  278. },
  279. {
  280. "name""纸巾",
  281. "key""纸巾",
  282. "icon""http://img.kiwifruits.cn/classify/4/2.jpg",
  283. "cat"4
  284. },
  285. {
  286. "name""驱蚊用品",
  287. "key""驱蚊用品",
  288. "icon""http://img.kiwifruits.cn/classify/4/3.jpg",
  289. "cat"4
  290. },
  291. {
  292. "name""收纳神器",
  293. "key""收纳神器",
  294. "icon""http://img.kiwifruits.cn/classify/4/4.jpg",
  295. "cat"4
  296. },
  297. {
  298. "name""厨房用品",
  299. "key""厨房用品",
  300. "icon""http://img.kiwifruits.cn/classify/4/5.jpg",
  301. "cat"4
  302. },
  303. {
  304. "name""厨房烹饪",
  305. "key""烹饪",
  306. "icon""http://img.kiwifruits.cn/classify/4/6.jpg",
  307. "cat"4
  308. },
  309. {
  310. "name""衣物晾晒",
  311. "key""衣物晾晒",
  312. "icon""http://img.kiwifruits.cn/classify/4/7.jpg",
  313. "cat"4
  314. },
  315. {
  316. "name""衣物护理",
  317. "key""衣物护理",
  318. "icon""http://img.kiwifruits.cn/classify/4/8.jpg",
  319. "cat"4
  320. },
  321. {
  322. "name""宠物用品",
  323. "key""宠物用品",
  324. "icon""http://img.kiwifruits.cn/classify/4/9.jpg",
  325. "cat"4
  326. },
  327. {
  328. "name""医药保健",
  329. "key""医药",
  330. "icon""http://img.kiwifruits.cn/classify/4/10.jpg",
  331. "cat"4
  332. },
  333. {
  334. "name""日用百货",
  335. "key""百货",
  336. "icon""http://img.kiwifruits.cn/classify/4/11.jpg",
  337. "cat"4
  338. },
  339. {
  340. "name""清洁用品",
  341. "key""清洁",
  342. "icon""http://img.kiwifruits.cn/classify/4/12.jpg",
  343. "cat"4
  344. },
  345. {
  346. "name""绿植园艺",
  347. "key""绿植",
  348. "icon""http://img.kiwifruits.cn/classify/4/13.jpg",
  349. "cat"4
  350. }
  351. ]
  352. },
  353. {
  354. "name""男装",
  355. "foods": [{
  356. "name""爸爸装",
  357. "key""爸爸装",
  358. "icon""http://img.kiwifruits.cn/classify/5/1.jpg",
  359. "cat"12
  360. },
  361. {
  362. "name""牛仔裤",
  363. "key""牛仔裤",
  364. "icon""http://img.kiwifruits.cn/classify/5/2.jpg",
  365. "cat"12
  366. },
  367. {
  368. "name""衬衫",
  369. "key""衬衫",
  370. "icon""http://img.kiwifruits.cn/classify/5/3.jpg",
  371. "cat"12
  372. },
  373. {
  374. "name""休闲裤",
  375. "key""休闲裤",
  376. "icon""http://img.kiwifruits.cn/classify/5/4.jpg",
  377. "cat"12
  378. },
  379. {
  380. "name""外套",
  381. "key""外套",
  382. "icon""http://img.kiwifruits.cn/classify/5/5.jpg",
  383. "cat"12
  384. },
  385. {
  386. "name""T恤",
  387. "key""T恤",
  388. "icon""http://img.kiwifruits.cn/classify/5/6.jpg",
  389. "cat"12
  390. },
  391. {
  392. "name""套装",
  393. "key""套装",
  394. "icon""http://img.kiwifruits.cn/classify/5/7.jpg",
  395. "cat"12
  396. },
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  1016. "name""游泳装备",
  1017. "key""游泳",
  1018. "icon""http://img.kiwifruits.cn/classify/14/1.jpg",
  1019. "cat"0
  1020. },
  1021. {
  1022. "name""泳镜",
  1023. "key""泳镜",
  1024. "icon""http://img.kiwifruits.cn/classify/14/2.jpg",
  1025. "cat"0
  1026. },
  1027. {
  1028. "name""户外装备",
  1029. "key""户外",
  1030. "icon""http://img.kiwifruits.cn/classify/14/3.jpg",
  1031. "cat"0
  1032. },
  1033. {
  1034. "name""健身服饰",
  1035. "key""健身",
  1036. "icon""http://img.kiwifruits.cn/classify/14/4.jpg",
  1037. "cat"0
  1038. },
  1039. {
  1040. "name""泳衣",
  1041. "key""泳衣",
  1042. "icon""http://img.kiwifruits.cn/classify/14/5.jpg",
  1043. "cat"0
  1044. },
  1045. {
  1046. "name""瑜伽垫",
  1047. "key""瑜伽垫",
  1048. "icon""http://img.kiwifruits.cn/classify/14/6.jpg",
  1049. "cat"0
  1050. },
  1051. {
  1052. "name""瑜伽用品",
  1053. "key""瑜伽",
  1054. "icon""http://img.kiwifruits.cn/classify/14/7.jpg",
  1055. "cat"0
  1056. },
  1057. {
  1058. "name""健身装备",
  1059. "key""健身",
  1060. "icon""http://img.kiwifruits.cn/classify/14/8.jpg",
  1061. "cat"0
  1062. },
  1063. {
  1064. "name""球迷用品",
  1065. "key""球迷",
  1066. "icon""http://img.kiwifruits.cn/classify/14/9.jpg",
  1067. "cat"0
  1068. }
  1069. ]
  1070. }
  1071. ]

原文地址:https://blog.csdn.net/weixin_44816309/article/details/106869588

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