<html>
<title>aaa</title>
<body>
<script language="javascript">
var str1 = "lily@163.com";
var fch = str1.search("@");/*先用search()取得@符号的位置*/
var usx = str1.substr(0,fch);/*substr()取得0-@之间的字符*/
document.write(usx.toUpperCase().fontsize(7),"<BR/>");
document.write("your is Email",str1);/*以上代码是显示*/
function isEmail(){
var str=document.form1.add.value;/*用来取得用户输入的值*/
if(str.indexOf("@")==-1)
alert("plase tianxie zhengque de Email")
else
alert("OK");
}
</script>
<form name="form1">
plases out put address
<input type="text" name="add"/>
<input type="button" value="submit" onClick="isEmail()"/>
</form>
</body>
</html>
<title>aaa</title>
<body>
<script language="javascript">
var str1 = "lily@163.com";
var fch = str1.search("@");/*先用search()取得@符号的位置*/
var usx = str1.substr(0,fch);/*substr()取得0-@之间的字符*/
document.write(usx.toUpperCase().fontsize(7),"<BR/>");
document.write("your is Email",str1);/*以上代码是显示*/
function isEmail(){
var str=document.form1.add.value;/*用来取得用户输入的值*/
if(str.indexOf("@")==-1)
alert("plase tianxie zhengque de Email")
else
alert("OK");
}
</script>
<form name="form1">
plases out put address
<input type="text" name="add"/>
<input type="button" value="submit" onClick="isEmail()"/>
</form>
</body>
</html>