Fix: iOS Safari 双击缩放问题 - UniApp H5 专用解决方案
问题描述： - 用户在 iOS Safari 上快速点击加分/减分按钮时触发页面缩放 - 影响用户体验，导致操作困难 解决方案： 1. 全局事件拦截（index.html） - 拦截 touchstart/touchend 事件，检测快速连续触摸（<350ms） - 完全禁用 dblclick 和 gesture 事件 - 使用 MutationObserver 动态监听 DOM 变化 - 添加 CSS 强制禁用缩放 2. 组件级优化（modify-score.vue） - 使用 touchstart/touchend 替代 click 事件 - 添加 300ms 防抖机制，忽略快速连续触摸 - 实现长按连续加减分功能（500ms 后每 100ms 触发一次） - H5 平台条件编译，添加原生事件监听器 - 清理定时器，防止内存泄漏 3. UniApp 特性应用 - 使用条件编译 #ifdef H5 针对 H5 平台特殊处理 - 利用 $nextTick 确保 DOM 渲染完成后添加事件监听 - 保持跨平台兼容性（小程序、App 不受影响） 技术要点： - touch-action: none 禁用触摸动作 - event.preventDefault() 阻止默认行为 - capture: true 在捕获阶段拦截事件 - passive: false 允许调用 preventDefault() 测试建议： - 在 iOS Safari 上快速点击按钮，验证不再缩放 - 测试长按功能是否正常工作 - 验证其他平台（微信小程序、Android）不受影响 🤖 Generated with Claude Code Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
DevOps
159
index.html
159
index.html
@@ -3,6 +3,7 @@
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<head>
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<meta charset="utf-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<!-- 关键：使用最严格的 viewport 设置 -->
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<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no, viewport-fit=cover">
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<meta name="apple-mobile-web-app-capable" content="yes">
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<meta name="apple-mobile-web-app-status-bar-style" content="black">
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@@ -11,6 +12,7 @@
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<link rel="stylesheet" href="<%= BASE_URL %>static/index.<%= VUE_APP_INDEX_CSS_HASH %>.css" />
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<style>
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* {
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/* 允许垂直滚动，但禁用其他触摸动作 */
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touch-action: pan-y !important;
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-webkit-touch-callout: none !important;
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-webkit-tap-highlight-color: transparent !important;
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@@ -18,12 +20,18 @@
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user-select: none !important;
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}
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/* 针对按钮元素完全禁用触摸动作 */
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button, .control-btn, [class*="btn"], [class*="control"] {
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/* 针对按钮元素完全禁用所有触摸动作 */
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button,
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.control-btn,
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[class*="btn"],
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[class*="control"],
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.decrease,
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.increase {
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touch-action: none !important;
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-webkit-user-select: none !important;
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user-select: none !important;
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-webkit-touch-callout: none !important;
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pointer-events: auto !important;
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}
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/* 允许输入框正常交互 */
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@@ -32,68 +40,86 @@
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-webkit-user-select: text !important;
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user-select: text !important;
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}
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/* 防止页面整体缩放 */
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html, body {
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touch-action: pan-y !important;
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-ms-touch-action: pan-y !important;
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}
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</style>
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<script>
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// 终极 iOS Safari 双击缩放禁用方案
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// UniApp H5 专用：iOS Safari 双击缩放终极解决方案
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(function() {
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'use strict';
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var lastTouchEnd = 0;
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var lastTouchStart = 0;
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var touchStartTime = 0;
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var touchCount = 0;
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var resetTimer = null;
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var isIOS = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;
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// 方案1: 拦截所有快速连续的触摸事件
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console.log('iOS 检测:', isIOS);
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console.log('User Agent:', navigator.userAgent);
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// 方案1: 全局拦截 touchstart - 最高优先级
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document.addEventListener('touchstart', function(event) {
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var now = Date.now();
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touchStartTime = now;
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// 重置计数器
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// 清除重置计时器
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if (resetTimer) {
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clearTimeout(resetTimer);
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}
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// 如果距离上次触摸结束小于300ms，增加计数
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if (now - lastTouchEnd < 300) {
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// 检查是否是快速连续触摸
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var timeSinceLastTouch = now - lastTouchEnd;
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if (timeSinceLastTouch < 350) {
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touchCount++;
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// 如果是第二次或更多次快速触摸，阻止默认行为
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// 如果是第二次或更多次快速触摸，立即阻止
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if (touchCount >= 1) {
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event.preventDefault();
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event.stopPropagation();
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event.stopImmediatePropagation();
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console.log('阻止快速连续触摸', touchCount, timeSinceLastTouch);
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return false;
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}
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} else {
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touchCount = 0;
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}
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lastTouchStart = now;
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// 500ms后重置计数器
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// 600ms 后重置计数器
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resetTimer = setTimeout(function() {
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touchCount = 0;
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}, 500);
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}, 600);
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}, { passive: false, capture: true });
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// 方案2: 拦截touchend事件
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// 方案2: 全局拦截 touchend
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document.addEventListener('touchend', function(event) {
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var now = Date.now();
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var touchDuration = now - touchStartTime;
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var timeSinceLastTouch = now - lastTouchEnd;
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// 如果两次触摸间隔小于300ms，阻止默认行为
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if (timeSinceLastTouch <= 300 && timeSinceLastTouch > 0) {
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// 如果触摸时间很短(<150ms)且距离上次触摸很近(<350ms)，很可能是双击
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if (touchDuration < 150 && timeSinceLastTouch < 350 && timeSinceLastTouch > 0) {
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event.preventDefault();
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event.stopPropagation();
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event.stopImmediatePropagation();
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console.log('阻止疑似双击', touchDuration, timeSinceLastTouch);
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return false;
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}
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lastTouchEnd = now;
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}, { passive: false, capture: true });
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// 方案3: 完全禁用双击事件
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// 方案3: 完全禁用 dblclick 事件
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document.addEventListener('dblclick', function(event) {
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event.preventDefault();
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event.stopPropagation();
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event.stopImmediatePropagation();
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console.log('阻止 dblclick 事件');
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return false;
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}, { passive: false, capture: true });
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@@ -101,6 +127,7 @@
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document.addEventListener('gesturestart', function(event) {
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event.preventDefault();
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event.stopPropagation();
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console.log('阻止 gesturestart');
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}, { passive: false, capture: true });
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document.addEventListener('gesturechange', function(event) {
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@@ -113,50 +140,92 @@
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event.stopPropagation();
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}, { passive: false, capture: true });
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// 方案5: 使用 Pointer Events 拦截
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if (window.PointerEvent) {
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var lastPointerUp = 0;
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document.addEventListener('pointerup', function(event) {
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var now = Date.now();
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if (now - lastPointerUp < 300) {
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event.preventDefault();
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event.stopPropagation();
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event.stopImmediatePropagation();
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}
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lastPointerUp = now;
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}, { passive: false, capture: true });
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}
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// 方案6: 监听 click 事件，过滤掉快速连续的点击
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// 方案5: 监听 click 事件，过滤快速连续点击
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var lastClickTime = 0;
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document.addEventListener('click', function(event) {
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var now = Date.now();
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var timeSinceLastClick = now - lastClickTime;
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// 如果距离上次点击小于300ms，可能是双击导致的，阻止
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if (timeSinceLastClick < 300 && timeSinceLastClick > 0) {
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// 如果距离上次点击小于350ms，阻止
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if (timeSinceLastClick < 350 && timeSinceLastClick > 0) {
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event.preventDefault();
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event.stopPropagation();
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event.stopImmediatePropagation();
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console.log('阻止快速连续点击', timeSinceLastClick);
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return false;
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}
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lastClickTime = now;
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}, { passive: false, capture: true });
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// 方案7: 禁用特定元素的默认行为
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document.addEventListener('DOMContentLoaded', function() {
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// 为所有按钮添加额外的事件监听
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var buttons = document.querySelectorAll('button, .control-btn, [class*="btn"]');
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buttons.forEach(function(btn) {
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btn.addEventListener('touchstart', function(e) {
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e.stopPropagation();
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}, { passive: false, capture: true });
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// 方案6: 针对按钮元素的特殊处理
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function addButtonProtection() {
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var selectors = [
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'.control-btn',
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'.control-btn.decrease',
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'.control-btn.increase',
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'button',
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'[class*="btn"]'
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];
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selectors.forEach(function(selector) {
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var elements = document.querySelectorAll(selector);
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elements.forEach(function(element) {
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// 移除所有现有的事件监听器（通过克隆节点）
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var newElement = element.cloneNode(true);
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element.parentNode.replaceChild(newElement, element);
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// 添加新的保护性事件监听器
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['touchstart', 'touchend', 'touchmove', 'click', 'dblclick'].forEach(function(eventType) {
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newElement.addEventListener(eventType, function(e) {
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if (eventType === 'dblclick') {
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e.preventDefault();
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e.stopPropagation();
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e.stopImmediatePropagation();
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return false;
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}
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}, { passive: false, capture: true });
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});
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});
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});
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});
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}
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console.log('iOS Safari 双击缩放防护已启用');
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// DOM 加载完成后添加按钮保护
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if (document.readyState === 'loading') {
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document.addEventListener('DOMContentLoaded', function() {
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setTimeout(addButtonProtection, 100);
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// 使用 MutationObserver 监听 DOM 变化
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var observer = new MutationObserver(function(mutations) {
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addButtonProtection();
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});
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observer.observe(document.body, {
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childList: true,
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subtree: true
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});
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});
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} else {
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setTimeout(addButtonProtection, 100);
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}
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// 方案7: 使用 CSS 强制禁用缩放
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var style = document.createElement('style');
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style.innerHTML = `
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* {
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touch-action: pan-y !important;
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}
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.control-btn,
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.control-btn *,
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button,
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button * {
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touch-action: none !important;
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-webkit-user-select: none !important;
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user-select: none !important;
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-webkit-touch-callout: none !important;
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}
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`;
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document.head.appendChild(style);
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console.log('iOS Safari 双击缩放防护已启用 - UniApp H5 专用版本');
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})();
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</script>
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</head>
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