mirror of
https://gitee.com/ShopeX/OMS
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66 lines
1.9 KiB
JavaScript
66 lines
1.9 KiB
JavaScript
/**
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* Copyright 2012-2026 ShopeX (https://www.shopex.cn)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// 屏幕适配
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;(function flexible(window, document) {
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const docEl = document.documentElement
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// 设计稿基准宽度，一般是 375 或 750
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const designWidth = 375
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// 最大宽度，可以根据需求设置
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const maxWidth = 750
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// 最小宽度
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const minWidth = 320
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// 计算、设置 rem
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function setRemUnit() {
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// 获取当前设备宽度
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let clientWidth = docEl.clientWidth
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// 限制最大最小宽度
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clientWidth = Math.min(clientWidth, maxWidth)
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clientWidth = Math.max(clientWidth, minWidth)
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// 计算 rem 基准值 (以 100px 为基准)
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// 如果设计稿是 375px，那么 1rem = 100px
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// 比如在设计稿中元素宽度是 75px，那么在 css 中就写成 0.75rem
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const rem = (clientWidth * 16) / designWidth
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// 设置 rem
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docEl.style.fontSize = rem + 'px'
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}
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// 监听窗口变化
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window.addEventListener('resize', setRemUnit)
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window.addEventListener('pageshow', function (e) {
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if (e.persisted) {
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setRemUnit()
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}
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})
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// 初始化执行一次
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setRemUnit()
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// 设置 body 的字体大小，避免 rem 对字体大小的影响
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if (document.readyState === 'complete') {
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document.body.style.fontSize = '14px'
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} else {
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document.addEventListener('DOMContentLoaded', function () {
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document.body.style.fontSize = '14px'
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})
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}
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})(window, document)
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