Javascript：缺少; 在语句之前 - 转义错误

Question

On the host the php generated javascript drops an error of:

missing ; before statement

At the same time on localhost it works fine.

the generated code was :

try{
   obj = document.getElementById('subcat');

    }catch(e){}

try{
    obj.innerHTML = "<select name=\"sub_ad_category_id\">   
                          <option value=\"\">-</option>
                          <option value=\"5\">bootle</option>
                          <option value=\"3\">Puzzle</option>
                     </select>";
     }catch(e){}

It is generated by action.php by the next code:

if($var_type=='array') $text = '<select name="+ads_data[sub_ad_category_id]+">';
    else  $text = '<select name="sub_ad_category_id">';
    $text .=   '<option value="">-</option>';
           $res = $ads->get_ads_categories($_SESSION['lang'],$parent_id);
            while($r = mysql_fetch_array($res)){
                $text .= '<option value="'.$r['ad_category_id'].'">'.$r['category_name'].'</option>';
            }
    $text .= '</select>';

    echo "try{obj = document.getElementById('".$id."');}catch(e){}";
    echo "try{obj.innerHTML = ".$text.";}catch(e){}";

Answer 1

Look at this line ...

obj.innerHTML = "<select name="sub_ad_category_id"><option value="">-</option></select>";

... modifications (missing some + signs and changed double quotes at value to single '')

obj.innerHTML = "<select name=" + sub_ad_category_id + "><option value=''>-</option></select>";

• The + is simple concatenation.
• The '' single quotes is one way of including quotes in final HTML cleanly; otherwise, you could have used \"\" slash escaped quotes.

UPDATE:

Given what I see of your changes above, it looks like how you are building the string. Don't use the enter key when building strings. Try like this ...

var html = "<select name=\"sub_ad_category_id\">";
html += "<option value=\"\">-</option>";
html += "<option value=\"5\">bootle</option>";
html += "<option value=\"3\">Puzzle</option>";
html += "</select>";
ob.innerHTML = html;

... OR ...

ob.innerHTML = "<select name=\"sub_ad_category_id\"><option value=\"\">-</option><option value=\"5\">bootle</option><option value=\"3\">Puzzle</option></select>";

See this jsFiddle