js snippets
function loadStyles(url) {
const link = document.createElement("link");
link.rel = "stylesheet";
link.type = "text/css";
link.href = url;
const head = document.getElementsByTagName("head")[0];
head.appendChild(link);
}
function loadScript(url) {
const script = document.createElement("script");
script.type = "text/javascript";
script.src = url;
document.body.appendChild(script);
}
function getQueryStringArgs() {
// 取得查询字符串并去掉开头的问号
const qs = location.search.length > 0 ? location.search.substring(1) : "";
//保存数据的对象
const args = {};
//取得每一项
const items = qs.length ? qs.split("&") : [];
let item, name, value;
for (let i = 0, len = items.length; i < len; i++) {
item = items[i].split("=");
name = decodeURIComponent(item[0]);
value = decodeURIComponent(item[1]);
if (name.length) {
args[name] = value;
}
}
return args;
}
//检测插件(在IE中无效)
function hasPlugin(name) {
name = name.toLowerCase();
for (let i = 0, len = navigator.plugins.length; i < len; i++) {
if (navigator.plugins[i].name.toLowerCase().indexOf(name) > -1) {
return true;
}
}
return false;
}
//检测IE中的插件
function hasIEPlugin(name) {
try {
new ActiveXObject(name);
return true;
} catch (err) {
return false;
}
}
//检测所有浏览器中的flash
function hasFlash() {
const result = hasPlugin("flash");
if(!result) {
result = hasIEPlugin("ShockWaveFlash.ShockWaveFlash");
}
return result;
}