find the first character is vowel or not

hi friend, can u plz send me javascript code for find the wether the first character is a vowel or not. 2) check wether the last character is same as the first character or not 3) check wehter it contains a space any where 4)replace all the "a" with "e" 5) extract the last three characters and check if it is "com" or not

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March 12, 2011 at 12:14 PM

<html>
<script>
function check(){
var str=document.getElementById("st").value;
var ch=str.charAt(0);
if(ch=='A'||ch=='a'||ch=='E'||ch=='e'||ch=='I'||ch=='i'||ch=='O'||ch=='o'||ch=='U'||ch=='u'){
alert("First character of string is vowel");
}
else{
alert("First character of string is not vowel");
}
var ch1=str.charAt(str.length-1);
if(ch1==ch){
alert("Last character is same as the first character");
}
else{
alert("Last character is not same as the first character");
}
var space = new RegExp("/^\s+$/");
if (space.test(str)) {
alert("String contains white space character");
}
else{
alert("String does not contain white space character");
}
var newst=str.replace("a","e");
alert("New String: "+newst);
var s=str.substr(-3);
if(s=="com"){
alert("It is com");
}
else{
alert("No");
}
}
</script>
Enter string <input type="text" id="st"><input type="button" value="check" onclick="check();">
</html>

March 12, 2011 at 2:20 PM

<p><html>
<head></p>

<script type="text/javascript">
function strfun()
{
    my_str="aeiouAEIOU";
    my_char=document.forms(0).t1.value.charAt(0);
if(my_str.indexOf(my_char)>=0)
{
alert("the 1st character vowel");
}
else
{
alert("The 1st character is not a vowel");}


var str1,str2;
str1=document.forms(0).t1.value.charAt(0);
str2=document.forms(0).t1.value.charAt((document.forms(0).t1.value.length)-1);
if(str1==str2)
{
alert("last and first chracter are same");
}

 var a=document.forms(0).t1.value;
    for(i=0;i<a.length;i++)
    {
    if(a.charCodeAt(i)==32)
    {   alert("string contains white space character");

    }
}
document.forms(0).t1.value=document.forms(0).t1.value.replace(/a/gi,'e');
{
    alert("replace a with e");}

 var s=a.substr(a.length-3,a.length);
if(s=="com")
{alert("it is com");
}
else
{alert("it is not com");}

}

</script>

<p></head>
<body></p>

<form name="f1" method="post">
<table>
<tr>
<td>Enter String:</td>
<td><input type="text" name="t1"></td>
</tr>
<tr>
<td><input type="button" value="submit" onclick="strfun()"></td>
<td><input type="reset" value="reset"></td>
</tr>
</table>
</form>

<p></body>
</html></p>