html5 - Unexpected entry in a <select> field! How did this happen? -

-

in 1 of forms on website, have <select> field this:

<select name="doorno" required>             <option></option>             <option>01</option>             <option>02</option>             <option>03</option>             <option>04</option>             <option>05</option>             <option>06</option>             <option>07</option>             <option>08</option>             <option>09</option>             <option>10</option>             <option>11</option>             <option>12</option>             <option>13</option>             <option>14</option>             <option>15</option>             <option>16</option>             <option>17</option>             <option>18</option>             <option>19</option>             <option>20</option>             <option>21</option>             <option>22</option>             <option>23</option>             <option>24</option>         </select></p>

the user should able select numbers between 01 - 24 - right?

but in table these entries stored, see entry like:

01,05

how have happened? when try type field not able - can choose 1 of options in list?

any idea how user have managed enter option 1 above?

edit based on of comments looked backend of database , found user has made multiple selections. question has related question:

if not specify multiple attribute in select element, mean user can overcome default behaviour of single select?

easy, user has edited dom developer tools or using javascript. fact is, isn't user's fault.

it's yours!

you mustn't blindly trust input client, should validate you're expecting (in case, numbers between 1 , 24), you're getting. in case, can done with:

$input = (int) $input; if ($input > 0 && $input <= 24) {

always validate input. always.


Comments

Post a Comment

Popular posts from this blog

java - Run a .jar on Heroku -

-
i trying run .jar file on heroku, , can't find instructions anywhere on how this. have read wants me compile uploading heroku. possible, , if is, how this? if helps, trying run minecraft craftbukkit server, , don't have pom.xml file yet. you didn't provide details i'll try give , people reaches question way it. first of all, create heroku account , create heroku application (assumed have done that). second, need generate application jar , upload heroku. so, open terminal , install heroku cli (assuming unix terminal): $ sudo npm install -g heroku-cli you need have npm , nodejs installed, can check link: https://www.digitalocean.com/community/tutorials/how-to-install-node-js-on-ubuntu-16-04 once done that, can use npm update node version acceptable heroku-cli: $ sudo npm install -g n $ sudo n 7.10.0 and run: $ sudo npm install -g heroku-cli in order deploy jars, need install deploy plugin: $ sudo heroku plugins:install heroku-cli-deploy ...
Read more

java - Jtable duplicate Rows -

-
Image
when add new rows in jtable duplicate rows many times this method update jtable public final void tableaucomande(){ ((defaulttablemodel)tabcommande.getmodel()).getdatavector().clear(); session s=hibernateutil.getsessionfactory().opensession(); criteria cr1= s.createcriteria(commande.class); list <commande> lcs=cr1.list() ; criteria cr2= s.createcriteria(lignecommande.class); list <lignecommande> lck=cr2.list() ; if(lcs.size()!=0 && lck.size()!=0) { (commande lc:lcs) { for(lignecommande lig:lck){ ((defaulttablemodel)tabcommande.getmodel()).addrow(new object[]{ lc.getid_cmd(),lc.getnumcmd(),lc.getdate_cmd(),lc.getclient().getnomprenom(), lig.getproduit().getlib_prd(),lig.getquantite(),lig.getproduit().getid_prd() }); } } // tabcommande.setrowselectioninterval(tabcommande.getrowcount()-1,tabcommande.getrowcount()-1); } } this code add add data rows displaye...
Read more

validation - How to pass paramaters like unix into windows batch file -

-
i need pass various parameters .cmd file unix format file.cmd -configuration=value -source=value -flag but, try this: startlocal @echo off cls setlocal set cmdline=%* set configuration= set source= set badargs= set validation= goto main :splitargs echo splitargs(%*) if "%*" neq "" ( /f "tokens=1,2,* delims== " %%i in ("%*") call :assignkeyvalue %%i %%j & call :splitargs %%k ) goto :eof :assignkeyvalue echo assignkeyvalue(%1, %2) if /i %1==-configuration ( set configuration=%2 ) else if /i %1==-source ( set source=%2 ) else ( rem append unrecognised [key,value] badargs echo unknown key %1 set badargs=%badargs%[%1, %2] ) goto :eof :validate echo validating set validation=fail if defined configuration ( echo -configuration ok if defined source ( echo -source ok if not defined badargs ( set validation=success ) ) ) goto :eof :main cl...
Read more