javascript - Filling in a textbox with values from checkboxes -


here code have far

  <head>    <script type="text/javascript">    function list(c,n,z) {    s=document.form.marktext.value;   if (c.checked) {   if (s.indexof(n)<0) s+=', '+n;   } else {   s=document.form.marktext.value.replace(', '+n,'');  }   z=", ";   if (s.substring(2) == z) s=s.substring(2);   document.form.marktext.value=s;}      function getchecked() {       var newtxt = '';       var chkbx = document.getelementsbytagname('input');        for(var = 0; < chkbx.length; ++)          {           if(chkbx[i].type == 'checkbox' && chkbx[i].checked === true) {           if(newtxt.length !== 0) {             newtxt += ',';             }             newtxt += chkbx.innerhtml;         }    }    document.form.marktext.value = newtxt;    }    </script>    </head>     <body>   <form name="form">   <input type="text" value="" name="marktext"><br>   <input type="checkbox" name="mark" value="word" onclick="getchecked()">word<br>   <input type="checkbox" name="mark" onclick="getchecked()">type<br>  <input type="checkbox" name="mark" onclick="getchecked()">other<br>   </form>     </body>

it works when click checkbox, getting 'undefined' label in textbox instead of checkbox value. guessing small , stupid can't seem figure out.

notice index on newtxt += chkbx[i].value; instead of newtxt += chkbx.innerhtml;

  <head>    <script type="text/javascript">    function list(c,n,z) {    s=document.form.marktext.value;   if (c.checked) {   if (s.indexof(n)<0) s+=', '+n;   } else {   s=document.form.marktext.value.replace(', '+n,'');  }   z=", ";   if (s.substring(2) == z) s=s.substring(2);   document.form.marktext.value=s;}      function getchecked() {        var newtxt = '';       var chkbx = document.getelementsbytagname('input');          for(var = 0; < chkbx.length; ++)      {       if(chkbx[i].type == 'checkbox' && chkbx[i].checked === true) {       if(newtxt.length !== 0) {         newtxt += ',';         }         newtxt += chkbx[i].value;     }      }    document.form.marktext.value = newtxt;    }    </script>    </head>     <body>   <form name="form">   <input type="text" value="" name="marktext"><br>    <input type="checkbox" name="mark" value="word" onclick="getchecked()">word<br>   <input type="checkbox" name="mark" onclick="getchecked()" value="type">type<br>   <input type="checkbox" name="mark" onclick="getchecked()" value="other">other<br>    </form>     </body>

but suggestion use jquery or other javascript library!!


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