localStorage

try{
	localStorage.setItem(key,value);
}catch(oException){
	if(oException.name == 'QuotaExceededError'){
		console.log('超出本地存储限额！');
		//如果历史信息不重要了，可清空后再设置
		localStorage.clear();
		localStorage.setItem(key,value);
	}
}

 localStorageService.get(key);

localStorageService.clearAll();

localStorageService.clearAll(/^\d+$/);

 localStorageService.remove(key1, key2, key3);

https://lzw.me/a/html5-localstorage.html

var re = /ab+c/;

正则表达式字面量在脚本加载后编译。若你的正则表达式是常量，使用这种方式可以获得更好的性能。

调用RegExp对象的构造函数，如下所示：

var re = new RegExp("ab+c");

转载于:https://www.cnblogs.com/jayruan/p/5170457.html