JS获取页面上所有input

1   for (var i = 0; i < document.getElementsByTagName("input").length; i++) {
2             if (document.getElementsByTagName("input")[i].id.indexOf("tx_ID") > -1) {
3                 document.getElementById("hid_SetValue").value += document.getElementsByTagName("input")[i].id + "," + document.getElementsByTagName("input")[i].value + "|";
4             }
5         }

 1  function GetAllIframeItem() {
 2         document.getElementById("hid_LogInfo").value = "";
 3         var a = document.getElementById("Iframe3").contentWindow;
 4         var all = "";
 5         var mytds =a.document.getElementsByTagName("td");
 6         for (var i = 0; i < a.document.getElementsByTagName("td").length; i++) {
 7             document.getElementById("hid_LogInfo").value += a.document.getElementsByTagName("td")[i].innerText + ",";
 8         }
 9         alert(document.getElementById("hid_LogInfo").value);
10         return false;
11     }