<html>
<head>
<script>
function myFunction(x,y)
{
z = x + y;
str = x +
" + " + y +
" = " + z;
alert(str);
}
function getWeek(){
var day=
new Date().getDay();
var x;
switch (day)
{
case 0:
x=
"Today is Sunday";
break;
case 1:
x=
"Today is Monday";
break;
case 2:
x=
"Today is Tuesday";
break;
case 3:
x=
"Today is Wednesday";
break;
case 4:
x=
"Today is Thursday";
break;
case 5:
x=
"Today is Friday";
break;
case 6:
x=
"Today is Saturday";
break;
}
alert(x);
return x;
}
function testError(){
try{
adddlert(
"Welcome guest!");
}
catch(e){
alert(
"error!");
}
}
function validate_required(field,alerttxt){
with (field){
if (value==
null||value==
""){
alert(alerttxt);
return false;
}
else {
return true
}
}
}
function validate_form(thisform){
with (thisform){
if (validate_required(email,
"Email must be filled out!")==
false){
email.focus();
return false;
}
}
}
</script>
</head>
<body>
<script>
var tempUndefine;
var tempNull=
null;
var person={name :
"caixie", age :
18, sex :
"female"};
document.write(person.name +
"<br />");
document.write(person[
"age"] +
"<br />");
document.write(tempUndefine +
"<br />");
document.write(tempNull +
"<br />");
var myString=
"Hello world!";
document.write(
"myString = "+myString +
"<br />");
document.write(
"length:" + myString.length +
"<br />");
document.write(
"indexOf:" + myString.indexOf(
"world") +
"<br />");
document.write(
"search:" + myString.search(
"world") +
"<br />");
myString.replace(
"W",
"w");
document.write(myString +
"<br />");
</script>
<button onClick=
"myFunction(1,2)">点击这里</button>
<button onClick=
"getWeek()">日期</button>
<button onClick=
"testError()">testError好的</button>
<form action=
"submitpage.htm" onsubmit=
"return validate_form(this)" method=
"post">
Email: <input type=
"text" name=
"email" size=
"30">
<input type=
"submit" value=
"Submit">
</form>
</body>
</html>
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