javascript - Expected expression, got end of script -

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so have below code in header of webpage:

<script type="text/javascript"> var counter = 2; function addnewitemfield(divname) {   var newdiv = document.createelement("div");   newdiv.id = "item_listing_" + counter;   newdiv.innerhtml  = "<label for=\"item_" + counter + "\">item: </label><br />";   newdiv.innerhtml += "<input type=\"text\" id=\"item_" + counter + "_category\" list=\"list_categories\" name=\"items[]\">";   newdiv.innerhtml += "<input type=\"number\" id=\"item_" + counter + "_amount\" mine=\"0.00\" step=\"0.01\" value=\"0.00\" name=\"amounts[]\"><br />";   document.getelementbyid(divname).appendchild(newdiv);   counter++; } </script>

i try calling using button, syntax error stating "expected expression, got end of script."

i've ran through linter , found no errors, i've reviewed hundred times , cannot find fault is. hate post code , ask "why doesn't work?" don't have idea what's going on i'm @ loss on how ask proper question it.

update

here associated piece of html furhter down page function call made , peices being manipulated reside:

<div id="item_listings">   <div id="item_listing_1">     <label for="item_1">item: </label><br />       <input type="text" id="item_1_category" list="list_categories" name="items[]">       <input type="number" id="item_1_amount" min="0.00" step="0.01" value="0.00" name="amounts[]"><br />    </div> </div> <br /> <input id= "add_new_item" type="button" onclick="javascript:addnewitemfield("item_listings")" value="add item">')

onclick="javascript:addnewitemfield("item_listings")" full of errors.

you cannot mix-and-match double quotes way. need use single quotes inside double quotes or you're stopping html element's attribute early.

right now, parses as

<input id= "add_new_item" type="button" onclick="javascript:addnewitemfield("

... followed bunch of garbage.

you need use single quotes:

<input id= "add_new_item" type="button" onclick="javascript:addnewitemfield('item_listings')" value="add item">

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