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2013年10月27日 星期日

10/21 HW

<html> <html> <head> </head> <body id="body"> <form action="javascript:void(0);" id="exampleForm"> <input type="text" id="examplePass"/> <input type="submit" /> </form> </body> <script> document.getElementById("exampleForm").onsubmit = function(){ var passwordRegex =/^(-?[\d])*$/; if(!passwordRegex.test(document.getElementById("examplePass").value)){ console.log("Regex didn't match"); var notify = document.getElementById("notify"); if(notify === null){ notify = document.createElement("p"); notify.textContent = "ERROR"; notify.id ="notify"; var body =document.getElementById("body"); body.appendChild(notify); } } }; </script> </html




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