try {
    if (!window.localStorage)
        throw new Error('LocalStorage disabled');

    localStorage.setItem('scrollTop', window.pageYOffset); //write

    alert('Current scroll: ' + localStorage.getItem('scrollTop')); //read

} catch (e) {
    !!window.console && !!console.error && console.error(e);
}

<button type="button" id="button">Reload</button>
<style>button{
	margin:1500px 0;
}</style>
<script>
window.scrollTo(0,+storage('scrollTop')||0);

button.onclick=function(){
	storage('scrollTop',window.pageYOffset);
	location.reload();
};

function storage(key,value){
	try {
			if (!window.localStorage)
					throw new Error('LocalStorage disabled');
					
			return localStorage[(value!==undefined?'s':'g')+'etItem'](key, value);
	} catch (e) {
			!!window.console && !!console.error && console.error(e);
	}
	
	return null;
}
</script>