实时刷新

js

<script type="text/javascript" src="jquery.js"></script>
<script>
$(function(){
    window.setInterval(function(){
        $.getJSON("json.php",function(data){
            document.getElementById('ceshi').innerHTML = data.name+data.price;
        });
    },1000);
});
</script>

<div id="ceshi"></div>

php

<?php

$price = rand(10,100);

echo "{
    "name": "铜",
    "price": "".$price."",
    "diff": "++146",
    "diffRate": "++0.37%",
    "jk": "39487",
    "zk": "39445",
    "zg": "39977",
    "zd": "39127",
    "class": "39591"
}";
?>