<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
</head>
<script type="text/javascript">
(function() {
//判断浏览器是否支持localStorage
if(!window.localStorage) {
console.log('当前浏览器不支持localStorage!');
return false;
}
var test = '0123456789';
//递归 加到10kb
var add = function(num) {
num += num;
if(num.length == 10240) {
test = num;
return;
}
add(num);
}
add(test);
var sum = test;
var show = setInterval(function(){
//每次增加10kb
sum += test;
try {
window.localStorage.removeItem('test');
window.localStorage.setItem('test', sum);
//控制台输出当前大小（kb）
console.log(sum.length / 1024 + 'KB');
} catch(e) {
//如果大小超出范围setItem会报异常 这时就是超出最大限制
console.log(sum.length / 1024 + 'KB超出最大限制');
//清除定时
clearInterval(show);
}
}, 0.1)
})()
</script>
<body>
</body>
</html>