<span id="span1"><b>test</b></span><script>
var i = 0;
function change()
{
if (i++ % 2)
span1.style.color = 'lightgreen';
else
span1.style.color = 'red';
}
window.setInterval(change, "2000");
</script>
var i = 0;
function change()
{
if (i++ % 2)
span1.style.color = 'lightgreen';
else
span1.style.color = 'red';
}
window.setInterval(change, "2000");
</script>
就是用这个了