Form submission checkscript() javascript -

i want able submit form if 'my val 2' option selected. if option selected , submit button pressed, want cannot submit it. also, if submit it, want go submission page says submitted. here form:

<form action="formsub.php" method="post" name="myform" onsubmit="return checkscript()">             <select name="test_select">                 <option value="1">my val 1</option>                 <option value="2">my val 2</option>                 <option value="3">my val 3</option>                 <option value="4">my val 4</option>             </select>             <input type="submit" value="submit" name="test_button" onclick="submitform(test_select.value)">         </form> 

here javascript functions

function submitform(val) {     var obj = val;;     alert("value =  " + obj); }  function checkscript() {     if (obj !== "2") {         alert('this not \'my val 2\' cannot submit');         return false;     }     return true; } 

also, checkscript function doesn't work correctly. f statement false.

you have mistake in script. javascript not see variable obj in scope of function checkscript(). rather try declare variable global variable. have examples how validate forms here: http://www.w3schools.com/js/js_form_validation.asp , : javascript form validation onsubmit @noob unchained write must value field script. have function submitform(val)

as see function gets value select panel. can try use function return selected value list.

var obj; function submitform(val) {     obj = val;     alert("value =  " + obj); }  function checkscript() {     if (obj !== "2") {         alert('this not \'my val 2\' cannot submit');         return false;     }     return true; } 

for first function submitform() set variable obj , second function use set obj check value.

but if use method @noob unchained because it's simpler , can validate many forms in 1 function. try read javascripts tutorials write scipts.

i hope you.