81 lines
2.4 KiB
Vue
81 lines
2.4 KiB
Vue
<template>
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<div :class="classes" :style="styles" @click="back">
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<slot>
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<div :class="innerClasses">
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<i class="ivu-icon ivu-icon-chevron-up"></i>
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</div>
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</slot>
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</div>
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</template>
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<script>
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import { scrollTop } from '../../utils/assist';
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import { on, off } from '../../utils/dom';
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const prefixCls = 'ivu-back-top';
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export default {
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props: {
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height: {
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type: Number,
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default: 400
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},
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bottom: {
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type: Number,
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default: 30
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},
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right: {
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type: Number,
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default: 30
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},
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duration: {
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type: Number,
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default: 1000
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}
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},
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data () {
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return {
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backTop: false
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};
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},
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mounted () {
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// window.addEventListener('scroll', this.handleScroll, false);
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// window.addEventListener('resize', this.handleScroll, false);
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on(window, 'scroll', this.handleScroll);
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on(window, 'resize', this.handleScroll);
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},
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beforeDestroy () {
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// window.removeEventListener('scroll', this.handleScroll, false);
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// window.removeEventListener('resize', this.handleScroll, false);
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off(window, 'scroll', this.handleScroll);
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off(window, 'resize', this.handleScroll);
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},
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computed: {
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classes () {
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return [
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`${prefixCls}`,
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{
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[`${prefixCls}-show`]: this.backTop
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}
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];
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},
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styles () {
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return {
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bottom: `${this.bottom}px`,
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right: `${this.right}px`
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};
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},
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innerClasses () {
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return `${prefixCls}-inner`;
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}
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},
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methods: {
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handleScroll () {
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this.backTop = window.pageYOffset >= this.height;
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},
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back () {
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const sTop = document.documentElement.scrollTop || document.body.scrollTop;
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scrollTop(window, sTop, 0, this.duration);
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this.$emit('on-click');
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}
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}
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};
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</script>
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