(function(){if(!window.localStorage){
console.log('当前浏览器不支持localStorage!')}var test ='0123456789';varadd=function(num){
num += num;if(num.length ==10240){
test = num;return;}add(num);}add(test);var sum = test;var show =setInterval(function(){
sum += test;try{
window.localStorage.removeItem('test');
window.localStorage.setItem('test', sum);
console.log(sum.length /1024+'KB');}catch(e){
console.log(sum.length /1024+'KB超出最大限制');clearInterval(show);}},0.1)})()