html5移动端适配
//动态改变font-size大小
(function changeFontSize() {let resizeEvt = 'orientationchange' in window ? 'orientationchange' : 'resize'if (!isPC()) {let docEl = document.documentElement;// recalc = function () {let clientWidth = docEl.clientWidth;docEl.style.fontSize = 100 * (clientWidth / 375) + 'px';let scaledFontSize = parseInt(window.getComputedStyle(docEl, null).getPropertyValue('font-size'));let scaleFactor = 100 * (clientWidth / 375) / scaledFontSize;let originRootFontSize = parseInt(window.getComputedStyle(document.documentElement, null).getPropertyValue('font-size'));docEl.style.fontSize = originRootFontSize * scaleFactor * scaleFactor + 'px';// };} else {let docEl = document.documentElement;docEl.style.fontSize = 'unset'}// if (!doc.addEventListener) return;window.addEventListener(resizeEvt, changeFontSize, false);document.addEventListener('DOMContentLoaded', changeFontSize, false);
})(document, window);function isPC() {let userAgentInfo = navigator.userAgent;let Agents = ["Android", "iPhone","SymbianOS", "Windows Phone","iPad", "iPod"];let isPc = true;for (let i = 0;i< Agents.length; i++) {if (userAgentInfo.indexOf(Agents[i]) > 0) {isPc = false;break;}}if (document.documentElement.clientWidth <= 640) {isPc = false;}return isPc;
}
浏览器信息检测
//判断浏览器信息
function getNavigationInfo () {const ua = navigator.userAgentlet browserInfo = {trident: ua.indexOf('Trident') > -1, // IE浏览器 trident内核presto: ua.indexOf('Presto') > -1, // opera浏览器 presto内核webKit: ua.indexOf('AppleWebKit') > -1, // chrome safari浏览器 webkit内核gecko: ua.indexOf('Gecko') > -1 && ua.indexOf('KHTML') == -1, //firefox浏览器 gecko内核mobile: !!ua.match(/AppleWebKit.*Mobile.*/), // 是否为移动终端ios: !!ua.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/), // ios终端android: ua.indexOf('Android') > -1 || ua.indexOf('Linux') > -1, // android终端或UC浏览器iPad: ua.indexOf('iPad') > -1, //iPad终端webApp: ua.indexOf('Safari') == -1, //是否web应用程序，没有头部与底部openOnVchat: ua.toLowerCase().match(/MicroMessenger/i) == "MicroMessenger".toLowerCase(), // 在微信中打开openOnWeiBo: ua.toLowerCase().match(/WeiBo/i) == "Weibo".toLowerCase(), // 在新浪微博客户端打开openOnQQ: ua.toLowerCase().match(/QQ/i) == "QQ".toLowerCase(),// 在QQ端打开}return browserInfo;
}
文本可编辑
在文本标签上加上属性contenteditable=“true”
深拷贝对象
function deepClone(obj) {if (obj === null || typeof obj !== 'object') {return obj;}let clone = Array.isArray(obj) ? [] : {};for (let key in obj) {if (obj.hasOwnProperty(key)) {clone[key] = deepClone(obj[key]);}}return clone;
}
)
