javascript - Retrieve child nodes of specific schema type from input control -


i have legacy document additional schema based tags in it:

<td class="inputcontrol">     <input id="offsetaccountsrequired_r0" type="radio" name="offsetaccountsrequired_n" value="y" >yes         <tla:instruction type="unhide" value="offsetaccountsapp1"></tla:instruction>         <tla:instruction type="jscript" value="//irrelevant javascript here"></tla:instruction>     </input>     <input id="offsetaccountsrequired_r1" type="radio" name="offsetaccountsrequired_n" value="n">no         <tla:instruction type="hide" value="offsetaccountsapp1~offsetaccountsappls1and2"></tla:instruction>     </input>     <input id="offsetaccountsrequired_r2" type="radio" name="offsetaccountsrequired_n" value="" checked="true" class="hiddenradio" onclick="validate_js(this)">         <tla:instruction type="hide" value="offsetaccountsapp1~offsetaccountsappls1and2"></tla:instruction>     </input> </td>

and dreadful javascript called validate_js(this) event works on tags:

// calling line - in case 'obj' input control 'offsetaccountsrequired_r2' tlainstructions = getinstructiontags(obj, 'tla:instruction');  function getinstructiontags(inputid,tagtype){     var coltla;     var coltlaarray = new array();     tagtype = tagtype.touppercase();          var tlafinished = false;         coltla = inputid.parentnode.childnodes;         for(var i=0;i<coltla.length;i++){             if(coltla[i].nodename.touppercase() == 'input' && coltla[i].id == inputid.id){                 for(var j=i;j<coltla.length;j++){                     if(coltla[j].nodename.touppercase() == tagtype){                         coltlaarray[coltlaarray.length] = coltla[j];                     }                      if(coltla[j].nodename.touppercase() == '/input'){                         tlafinished = true;                         break;                     }                 }             }              if(tlafinished){                 break;             }         }          return coltlaarray;     } }

my task bring javascript spec work in ie9 (it ever used in vb6 web browser control).

as far can tell limited javascript skills code meant retrieve tla:instruction nodes within input element. using line coltla = inputid.parentnode.childnodes

which looks odd it's going level , down level. assume because retrieving tla:instruction elements doesn't retrieve nodes if use coltla = inputid.getelementsbytagname('tla:instruction').

is there simpler way retrieve array of elements of specific type within input control?

according html spec input tags cannot have content.

start tag: required, end tag: forbidden

so, attached parent of input element hence reason why inputid.parentnode.childnodes

here simplified version using nextsibling

function getinstructiontags(inputid,tagtype){   var coltla;   var coltlaarray = [];   tagtype = tagtype.touppercase();    var tlafinished = false;   var next = inputid;   while ( !tlafinished ) {     var next = next.nextsibling;     tlafinished = next == null;     if ( !tlafinished ) {       var nodename = next.nodename.touppercase();       if ( nodename == tagtype ) {         coltlaarray.push(next);               } else {         tlafinished = (nodename != '#text');       }     }   }   return coltlaarray; }

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