重新创建textRange即可
<button>ddd1 </button>
<button>ddd2 </button>
<SCRIPT LANGUAGE="JScript">
var coll = document.all.tags("BUTTON");
var t ="Clicked", t2;
if (coll!=null && coll.length>0) {
var rng = coll[0].createTextRange();
rng.text = t;
rng = coll[0].createTextRange();
t2 = rng.text;
window.status=t2;
alert(t2);
}
</SCRIPT>
<button>ddd1 </button>
<button>ddd2 </button>
<SCRIPT LANGUAGE="JScript">
var coll = document.all.tags("BUTTON");
var t ="Clicked", t2;
if (coll!=null && coll.length>0) {
var rng = coll[0].createTextRange();
rng.text = t;
rng = coll[0].createTextRange();
t2 = rng.text;
window.status=t2;
alert(t2);
}
</SCRIPT>
var rng = coll[0].createTextRange();
rng.text = t;
rng = coll[0].createTextRange();