本文實例為大家分享了vue實現拖拽進度條的具體代碼，供大家參考，具體內容如下
組件代碼：
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<template> <div> <div class="slider" ref="slider"> <div class="process" :style="{ width }"></div> <div class="thunk" ref="trunk" :style="{ left }"> <div class="block"></div> <div class="tips"> <!-- <span>{{scale*100}}</span> --> <i class="fas fa-caret-down"></i> </div> </div> </div> <div> <button @click=" () => { this.per++; } " > +</button >{{ per }}%<button @click=" () => { if (this.per > 0) { this.per--; } } " > - </button> </div> </div></template><script>/* * min 進度條最小值 * max 進度條最大值 * v-model 對當前值進行雙向綁定實時顯示拖拽進度 * */export default { props: ["min", "max", "value"], data() { return { slider: null, //滾動條DOM元素 thunk: null, //拖拽DOM元素 per: this.value, //當前值 }; }, //渲染到頁面的時候 mounted() { this.slider = this.$refs.slider; this.thunk = this.$refs.trunk; var _this = this; this.thunk.onmousedown = function (e) { var width = parseInt(_this.width); var disX = e.clientX; document.onmousemove = function (e) { // value, left, width // 當value變化的時候，會通過計算屬性修改left，width // 拖拽的時候獲取的新width var newWidth = e.clientX - disX + width; // 拖拽的時候得到新的百分比 var scale = newWidth / _this.slider.offsetWidth; _this.per = Math.ceil((_this.max - _this.min) * scale + _this.min); _this.per = Math.max(_this.per, _this.min); _this.per = Math.min(_this.per, _this.max); _this.$emit("input", _this.per); }; document.onmouseup = function () { document.onmousemove = document.onmouseup = null; }; return false; }; }, computed: { // 設置一個百分比，提供計算slider進度寬度和trunk的left值 // 對應公式為 當前值-最小值/最大值-最小值 = slider進度width / slider總width // trunk left = slider進度width + trunk寬度/2 scale() { return (this.per - this.min) / (this.max - this.min); }, width() { if (this.slider) { return this.slider.offsetWidth * this.scale + "px"; } else { return 0 + "px"; } }, left() { if (this.slider) { return ( this.slider.offsetWidth * this.scale - this.thunk.offsetWidth / 2 + "px" ); } else { return 0 + "px"; } }, },};</script><style>.box { margin: 100px auto 0; width: 80%;}.clear:after { content: ""; display: block; clear: both;}.slider { user-select: none; position: relative; margin: 20px 0; width: 400px; height: 10px; background: #e4e7ed; border-radius: 5px; cursor: pointer;}.slider .process { position: absolute; left: 0; top: 0; width: 112px; height: 10px; border-radius: 5px; background: #81b159;}.slider .thunk { position: absolute; left: 100px; top: -7px; width: 20px; height: 20px;}.slider .block { width: 20px; height: 20px; border-radius: 50%; border: 2px solid #409eff; background: rgba(255, 255, 255, 1); transition: 0.2s all;}.slider .tips { position: absolute; left: -7px; bottom: 30px; min-width: 15px; text-align: center; padding: 4px 8px; /* background: #000; */ border-radius: 5px; height: 24px; color: #fff;}.slider .tips i { position: absolute; margin-left: -5px; left: 50%; bottom: -9px; font-size: 16px; color: #000;}.slider .block:hover { transform: scale(1.1); opacity: 0.6;}</style> |
調用：
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<template> <slider :min="0" :max="100" v-model="per"></slider></template><script>import slider from "@/components/slider";export default { data() { return {}; }, computed: { per: { get() { return 0; }, set(val) { console.log(val); }, }, }, components: { slider }, mounted() {}, methods: {},};</script><style ></style> |
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_46476460/article/details/114139706
