JavaScript를 사용하여 HTML 양식을 제출하려면 onsubmit 이벤트가 발생할 때 validate()를 호출하여 데이터를 확인합니다.
예시
다음 코드를 실행하여 HTML 양식을 제출할 수 있습니다. −
<html> <head> <title>Form Validation</title> <script> // Form validation function validate() { if( document.myForm.Name.value == "" ) { alert( "Please provide your name!" ); document.myForm.Name.focus() ; return false; } if( document.myForm.EMail.value == "" ) { alert( "Please provide your Email!" ); document.myForm.EMail.focus() ; return false; } if( document.myForm.Zip.value == "" || isNaN( document.myForm.Zip.value ) || document.myForm.Zip.value.length != 5 ) { alert( "Please provide a zip in the format #####." ); document.myForm.Zip.focus() ; return false; } if( document.myForm.Country.value == "-1" ) { alert( "Please provide your country!" ); return false; } return( true ); } </script> </head> <body> <form action = "/cgi-bin/test.cgi" name = "myForm" onsubmit = "return(validate());"> <table cellspacing = "2" cellpadding = "2" border = "1"> <tr> <td align = "right">Name</td> <td><input type = "text" name = "Name" /></td> </tr> <tr> <td align = "right">EMail</td> <td><input type = "text" name = "EMail" /></td> </tr> <tr> <td align = "right">Zip Code</td> <td><input type = "text" name = "Zip" /></td> </tr> <tr> <td align = "right">Country</td> <td> <select name = "Country"> <option value = "-1" selected>[choose yours]</option> <option value = "1">Canada</option> <option value = "2">Sri Lanka</option> <option value = "3">Mexico</option> </select> </td> </tr> <tr> <td align = "right"></td> <td><input type = "submit" value = "Submit" /></td> </tr> </table> </form> </body> </html>