HTML5 格式和 HTML5 属性
HTML5 是一种新型的网页格式,它带来了许多新的属性和格式,使得网页更加灵活和交互性更强。本文将介绍 HTML5 属性的基本使用方法,以及一些新的交互效果和 Web API。
HTML5 属性
在 HTML5 中,可以使用 JavaScript 来获取和设置 HTML5 属性。与 CSS 一样,JavaScript 也有许多不同的 API,其中一些新的 API 可以让您创建更加复杂和交互性的网页。
响应式网页设计
在 HTML5 中,响应式网页设计已经成为了网页设计的一个重要部分。通过使用 HTML5 媒体查询和 CSS 中的媒体查询,您可以创建出能够根据不同的设备大小和分辨率自动调整样式的网页。
HTML5 媒体查询
媒体查询是一种新的 CSS 查询方式,它可以通过 JavaScript 来获取和设置。媒体查询可以让你根据不同的设备类型和方向自动调整样式,例如:
“`
// 使用媒体查询获取不同的设备类型和方向
var query = window.getElementsByTagName('link')[0].getAttribute('href');
// 获取设备类型和方向
var deviceType = query.match(/^(?:(?:webkit|岭)|(?:handheld|web))\s+(?:phone|tablet|ms(?:排山倒置|spread|landscape))\s+(?:(?:(?:webkit|岭)|(?:handheld|web))|(?:phone|tablet|ms(?:排山倒置|spread|landscape)))/);
// 设置样式
if (deviceType.length > 0) {
var supported = deviceType.filter(function(deviceType) {
return deviceType.indexOf('web')!== -1;
});
for (var i = 0; i < supported.length; i++) {
var deviceType = supported[i];
if (deviceType === 'web') {
// 设置样式
var responsiveDevice = document.createElement('div');
responsiveDevice.className ='responsive-device';
responsiveDevice.style.position = 'absolute';
responsiveDevice.style.left = '0px';
responsiveDevice.style.top = '0px';
responsiveDevice.style.width = '100%';
responsiveDevice.style.height = '100%';
responsiveDevice.style.zIndex = 'auto';
document.body.appendChild(responsiveDevice);
}
if (deviceType === 'handheld' || deviceType ==='mobile') {
// 设置样式
var responsiveDevice = document.createElement('div');
responsiveDevice.className ='responsive-device';
responsiveDevice.style.position = 'absolute';
responsiveDevice.style.left = '0px';
responsiveDevice.style.top = '0px';
responsiveDevice.style.width = '100%';
responsiveDevice.style.height = '100%';
responsiveDevice.style.zIndex = 'auto';
document.body.appendChild(responsiveDevice);
}
if (deviceType === 'tablet') {
// 设置样式
var responsiveDevice = document.createElement('div');
responsiveDevice.className ='responsive-device';
responsiveDevice.style.position = 'absolute';
responsiveDevice.style.left = '0px';
responsiveDevice.style.top = '0px';
responsiveDevice.style.width = '100%';
responsiveDevice.style.height = '100%';
responsiveDevice.style.zIndex = 'auto';
document.body.appendChild(responsiveDevice);
}
if (deviceType ==='ms') {
// 设置样式
var responsiveDevice = document.createElement('div');
responsiveDevice.className ='responsive-device';
responsiveDevice.style.position = 'absolute';
responsiveDevice.style.left = '0px';
responsiveDevice.style.top = '0px';
responsiveDevice.style.width = '100%';
responsiveDevice.style.height = '100%';
responsiveDevice.style.zIndex = 'auto';
document.body.appendChild(responsiveDevice);
}
}
}
// 使用媒体查询获取不同的设备类型和方向
var query = window.getElementsByTagName('link')[0].getAttribute('href');
// 获取设备类型和方向
var deviceType = query.match(/^(?:(?:webkit|岭)|(?:handheld|web))\s+(?:phone|tablet|ms(?:排山倒置|spread|landscape))\s+(?:(?:webkit|岭)|(?:handheld|web))|(?:phone|tablet|ms(?:排山倒置|spread|landscape))/);
// 设置样式
for (var i = 0; i < deviceType.length; i++) {
var deviceType = deviceType[i];
if (deviceType === 'web') {
// 设置样式
var responsiveDevice = document.createElement('div');
responsiveDevice.className ='responsive-device';
responsiveDevice.style.position = 'absolute';
responsiveDevice.style.left = '0px';
responsiveDevice.style.top = '0px';
responsiveDevice.style.width = '100%';
responsiveDevice.style.height = '100%';
responsiveDevice.style.zIndex = 'auto';
document.body.appendChild(responsiveDevice);
}
if (deviceType === 'handheld' || deviceType ==='mobile') {
// 设置样式
var responsiveDevice = document.createElement('div');
responsiveDevice.className ='responsive-device';
responsiveDevice.style.position = 'absolute';
responsiveDevice.style.left = '0px';
responsiveDevice.style.top = '0px';
responsiveDevice.style.width = '100%';
responsiveDevice.style.height = '100%';
responsiveDevice.style.zIndex = 'auto';
document.body.appendChild(responsiveDevice);
}
if (deviceType === 'tablet') {
// 设置样式
var responsiveDevice = document.createElement('div');
responsiveDevice.className ='responsive-device';
responsiveDevice.style.position = 'absolute';
responsiveDevice.style.left = '0px';
responsiveDevice.style.top = '0px';
responsiveDevice.style.width = '100%';
responsiveDevice.style.height = '100%';
responsiveDevice.style.zIndex = 'auto';
document.body.appendChild(responsiveDevice);
}
if (deviceType ==='ms') {
// 设置样式
var responsiveDevice = document.createElement('div');
responsiveDevice.className ='responsive-device';
responsiveDevice.style.position = 'absolute';
responsiveDevice.style.left = '0px';
responsiveDevice.style.top = '0px';
responsiveDevice.style.width = '100%';
responsiveDevice.style.height = '100%';
responsiveDevice.style.zIndex = 'auto';
document.body.appendChild(responsiveDevice);
}
}
// 使用媒体查询获取不同的设备类型和方向
var query = window.getElementsByTag