javascript - Execute two onsubmit functions; second function executes only if first function is true -

i have email form validation script. if first function returns true (no errors in email field), second function execute, url redirect. can combine these 2 functions, need put in the form like, onsubmit="return checkform();"

call second function within first:

function checkform() {     // validation logic here     if (valid)         doredirect(); }