submit and onsubmit (transfer), submitonsubmit_PHP tutorial

submit and onsubmit (transfer), submitonsubmit

order of occurrence: onsubmit -> submit

1. Block form bill of lading:

<script><br>function submitFun(){<br> //Logical judgment<br> return true; //Allow form submission<br> //Logical judgment<br> return false;//Not allowed Form submission<br>}<br></script>

//Note that onsubmit=" cannot be written here submitFun();"Otherwise the form will always be submitted

2.onsubmit() and submit():

<script><br>function fun()<br>{<br> alert("form_submit");<br>}<br></script>

http://www.bkjia.com/PHPjc/1053800.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1053800.htmlTechArticlesubmit and onsubmit (transfer), submitonsubmit occurs in sequence: onsubmit - submit 1. Prevent form bill of lading: script function submitFun( ){ //Logical judgment return true; //Allow form submission //Logic...