简单的js表单验证(提示错误)
![简单的js表单验证(提示错误)](https://img.360docs.net/img92/04dv3yuvm780bn6ecij9-21.webp)
![简单的js表单验证(提示错误)](https://img.360docs.net/img92/04dv3yuvm780bn6ecij9-22.webp)
display:none;
position:absolute;
left:410px;
top:146px;
width:190px;
height:35px;
z-index:3;
}
#Layer4 {
display:none;
position:absolute;
left:414px;
top:289px;
width:175px;
height:27px;
z-index:4;
}
-->
function change()
{
if(document.form1.checkbox3.checked==true) document.form1.Submit2.disabled=false;
else
document.form1.Submit2.disabled=true;
}
function checkAll()
{
if(checkuser()&&checkpwd()&&checkrepwd()&&checkemail())
return true;
else
return false;
}
function checkuser(){
var txtu=https://www.360docs.net/doc/912602598.html,er.value;
for(var i=0;i if(txtu[i] == "_" ){ document.getElementById("Layer1").style.display ="block"; return false; } else { document.getElementById("Layer1").style.display ="none"; } } return true; } var txtp function checkpwd() { txtp=document.form1.pwd.value; if(txtp.length<6) { document.getElementById("Layer2").style.display="block" ;return false;} else{document.getElementById("Layer2").style.display="none" ;} return true; } function checkrepwd() { var txtre=document.form1.repwd.value; if(txtre!=txtp) { document.getElementById("Layer3").style.display="block" ;return false;} else{document.getElementById("Layer3").style.display="none" ;} return true; } function checkemail() { var txte=document.form1.email.value; if(txte.indexOf("@",0)==-1) { document.getElementById("Layer4").style.display="block" ;return false;} return true; }