Pen Settings

HTML

CSS

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

JavaScript

Babel is required to process package imports. If you need a different preprocessor remove all packages first.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Behavior

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML

              
                <!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Vue 实现商品属性的计算显示</title>
</head>
<body>
	<textarea id="values" style="width:600px;height:100px">
		[
		   { "颜色": "红", "尺码": "大", "型号": "A", "skuId": "3158055" },
		   { "颜色": "白", "尺码": "大", "型号": "A", "skuId": "3158054" },
		   { "颜色": "白", "尺码": "中", "型号": "B", "skuId": "3133859" },
		   { "颜色": "蓝", "尺码": "小", "型号": "C", "skuId": "3516833" }
		]
	</textarea>
	<div id="app">
		<label> 
			默认选中 :  
			<input type="text" name="skuId" id="skuId" v-bind:value="skuId">
		</label>
		<button @click="getTextareaData" class="top-but"> 重新加载数据 </button> 当前属性ID:{{ skuId }}
		<dl v-for="item, key in list.result" class="content" v-bind:class="{hl: highKeys[key]}">
			<dt> {{key}} : </dt> 
			<dd>
				<button
					class="item"
					v-for="value in item"
					@click="handleActive(key, value)"
					v-bind:class="{active: value.active, disabled: !value.active && value.disabled}" 
					> {{ value.name }} </button> 
			</dd>
		</dl>
		已经选择:{{ message }}
	</div>
</body>
<script src="https://unpkg.com/vue "></script>
</html>
              
            
!

CSS

              
                body {
    font-size: 12px;
}
dt {
    width: 100px;
    text-align: right;
}
dl {
    clear: both;
    overflow:hidden;
}
dl.hl {
    background:#ddd;
}
dt, dd {
    float:left;
    height: 40px;
    line-height: 40px;
    margin-left: 10px;
}
button {
    font-size: 14px;
    font-weight: bold;
    width: 100px;
    height: 30px;
    margin: 0 10px;
}

.disabled {
    color:#999;
    border: 1px dashed #666;
}
.active {
    color: red;
}

.top-but {
	margin: 10px;
}

#skuId {
	height: 24px;
	font-size: 14px;
	line-height: 24px;
}
              
            
!

JS

              
                let vue = new Vue({
		el: "#app",
		data(){
			return {
				data: [],
				skuId: "",
				skuName: "skuId",
				// 属性名称信息
				keys: [],
				// 数据集合{list.result list.items}
				list: {},
				// 分隔符
				spliter: '\u2299',
				result: {},
				message: "",
				highKeys: {},
			};
		},
		methods: {
			powerset(arr) {
			    let ps = [[]];
			    for (let i = 0; i < arr.length; i++) {
			        for (let j = 0, len = ps.length; j < len; j++) {
			            ps.push(ps[j].concat(arr[i]));
			        }
			    }

			    return ps;
			},

			/**
			 * 初始化数据
			 * @return 
			 */
			initData() {
				this.result = {};
				this.keys = this.getAllKeys();
				for (let i = 0; i < this.keys.length; i ++) {
					this.highKeys[this.keys[i]] = false;
				}

				this.list = this.combineAttr(this.data, this.keys);
				this.initSeleted(this.skuId);
				this.buildResult(this.list.items)
				this.updateStatus(this.getSelectedItem());
				this.showResult();
			},

			/**
			 * 获取输入表单中的数据进行初始化
			 * @return
			 */
			getTextareaData() {
				let data = document.getElementById('values').value;
				let skuId = document.getElementById("skuId").value;
				
				try {
					this.data = JSON.parse(data);
					let isHas = false;
					for (let i = 0; i < this.data.length; i ++) {
						if (skuId == this.data[i][this.skuName]) {
							isHas = true;
							break
						}
					}

					this.skuId = isHas ? skuId : this.data[0][this.skuName];
					this.initData();
				} catch (e) {
					this.data = [];
				}
			},

			/**
			 * 正常属性点击
			 */
			handleNormalClick(key, value) {
				for (let i in this.list.result[key]) {
					if (i != value.name) {
						this.list.result[key][i].active = false;
					} else {
						this.list.result[key][i].active = true;
					}
				}
			},

			/**
			 * 无效属性点击
			 */
			handleDisableClick(key, value) {
				this.list.result[key][value.name]["disabled"] = false;
			    // 清空高亮行的已选属性状态(因为更新的时候默认会跳过已选状态)
			    for (let i in this.list.result) {
			    	if (i != key) {
			    		for (let x in this.list.result[i]) {
			    			this.list.result[i][x].active = false;
			    		}
			    	}
			    }
	
			    this.updateStatus(this.getSelectedItem());
			},

			/**
			 * 高亮行
			 */
			highAttributes: function() {
				for (let key in this.list.result) {
					this.highKeys[key] = true;
					for (let attr in this.list.result[key]) {
						if (this.list.result[key][attr].active === true) {
							this.highKeys[key] = false;
							break;
						}
					}
				}
			},

			/**
			 * 点击事件处理
			 * @param  key   点击的行
			 * @param  value 点击的按钮的数据
			 */
			handleActive: function(key, value) {
				if (value.active == true) {
					return false;
				}

	            this.handleNormalClick(key, value);
	            if (value.disabled === true) {
	                this.handleDisableClick(key, value);
	            }

	            this.updateStatus(this.getSelectedItem());
	            this.highAttributes();
	            this.showResult();
			},

			/**
			 * 计算属性
			 * @param  {[type]} data [description]
			 * @param  {[type]} keys [description]
			 * @return {[type]}      [description]
			 */
			combineAttr(data, keys) {
			    let allKeys = []
			    let result = {}

			    for (let i = 0; i < data.length; i++) {
			        let item = data[i]
			        let values = []

			        for (let j = 0; j < keys.length; j++) {
			            let key = keys[j]
			            if (!result[key]) {
			            	result[key] = {};
			            }

			            if (!result[key][item[key]]) {
			            	result[key][item[key]] = {"name": item[key], "active": false, "disabled": true};
			            }

			            values.push(item[key]);
			        }

			        allKeys.push({
			            path: values.join(this.spliter),
			            sku: item['skuId']
			        });
			    }

			    return {
			        result: result,
			        items: allKeys
			    }
			},

			/**
			 * 获取所有属性
			 * @return {[type]} [description]
			 */
			getAllKeys() {
				let arrKeys = [];
				for (let attribute in this.data[0]) {
					if (!this.data[0].hasOwnProperty(attribute)) {
						continue;
					} 

					if (attribute !== this.skuName) {
						arrKeys.push(attribute);
					}
				}

				return arrKeys;
			},

			getAttruites(arr) {
				let result = []
			    for (let i = 0; i < arr.length; i++) { 
			    	result.push(arr[i].path) 
			    }

			    return result
			},

			/**
			 * 生成所有子集是否可选、库存状态 map
			 */
			buildResult(items) {
			    let allKeys = this.getAttruites(items)

			    for (let i = 0; i < allKeys.length; i++) {
			        let curr = allKeys[i];
			        let sku = items[i].sku;
			        let values = curr.split(this.spliter);
			        let allSets = this.powerset(values);

			        // 每个组合的子集
			        for (let j = 0; j < allSets.length; j++) {
			            let set = allSets[j]
			            let key = set.join(this.spliter)

			            if (this.result[key]) {
			                this.result[key].skus.push(sku)
			            } else {
			                this.result[key] = {
			                    skus: [sku]
			                }
			            }
			        }
			    }
			},

			/**
			 * 获取选中的信息
			 * @return Array 
			 */
			getSelectedItem() {
				let result = [];
				for (let attr in this.list.result) {
					let attributeName = '';
					for (let attribute in this.list.result[attr]) {
						if (this.list.result[attr][attribute].active === true) {
							attributeName = attribute;
						}
					}

					result.push(attributeName);
				}

			    return result
			},

			/**
			 * 更新所有属性状态
			 */
			updateStatus(selected) {
			    for (let i = 0; i < this.keys.length; i++) {
			        let key = this.keys[i],
			         	data = this.list.result[key],
			        	hasActive = !!selected[i],
			        	copy = selected.slice();

			        for (let j in data) {
			            let item = data[j]["name"];
			            if (selected[i] == item) {
			            	continue
			            }

			            copy[i] = item
			            let curr = this.trimSpliter(copy.join(this.spliter), this.spliter);
			            this.list.result[key][j]["disabled"]  = this.result[curr] ? false : true;
			        }
			    }
			},

			trimSpliter(str, spliter) {
			    // ⊙abc⊙ => abc
			    // ⊙a⊙⊙b⊙c⊙ => a⊙b⊙c
			    let reLeft    = new RegExp('^' + spliter + '+', 'g');
			    let reRight   = new RegExp(spliter + '+$', 'g');
			    let reSpliter = new RegExp(spliter + '+', 'g');
			    return str.replace(reLeft, '')
			        .replace(reRight, '')
			        .replace(reSpliter, spliter)
			},

			/**
			 * 初始化选中
			 * @param  mixed|Int|String skuId 需要选中的skuId
			 * @return {[type]}       [description]
			 */
			initSeleted(skuId) {
			    for (let i in this.data) {
			    	if (this.data[i][this.skuName] == skuId) {
			    		for (let x in this.data[i]) {
			    			if (x !== this.skuName) {
			    				this.list.result[x][this.data[i][x]].active = true;
			    			}
			    		}
			    		break;
			    	}
			    }
			},

			/**
			 * 显示选中的信息
			 * @return 
			 */
			showResult() {
			    let result = this.getSelectedItem()
			    let s = []
			    for (let i = 0; i < result.length; i++) {
			        let item = result[i];
			        if (!!item) {
			            s.push(item)
			        }
			    }

			    if (s.length == this.keys.length) {
			        let curr = this.result[s.join(this.spliter)]
			        if (curr) {
			            s = s.concat(curr.skus)
			            this.skuId = curr.skus[0];
			        }
			        
			        this.message = s.join('\u3000-\u3000');
			    }
			}
		},

		created() {
			this.getTextareaData();
		}
	})
              
            
!
999px

Console