jszs 历史管理

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
<script type="text/javascript">
window.onload = function ()
{
    var odiv = document.getElementById(‘div1‘);
    var obtn = document.getElementById(‘btn‘);
    
    
    
    obtn.onclick = function ()
    {
        var number = randnew(35,7);
        
        odiv.innerHTML = number;
        history.pushState(number,‘‘);        
        
    }
    
    window.onpopstate = function (ev)
    {
        var number = ev.state||‘‘;
        odiv.innerHTML = number;
    }
    
    
    
    function randnew(alls,news)
    {
        var arr = [];
        var newarr = [];
        for(var i = 1; i <= alls; i++)
        {
            arr.push(i);
        }
        
        for( var i = 0; i < news; i++)
        {
            newarr.push(arr.splice(Math.floor(Math.random()*arr.length),1));
        }
        
        return newarr;
    }
};
</script>
</head>

<body>
<input id="btn" type="button" value="35选7">
<div id="div1"></div>
</body>
</html>

 

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