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The Asc function converts the first character in a string to ANSI code, and returns the result.
Syntax
Asc(string)
| Parameter | Description |
|---|---|
| string | Required. A string expression. Cannot be an empty string! |
Examples
Example 1
<script type="text/vbscript">
document.write(Asc("A") & "<br />")
document.write(Asc("a") & "<br />")
document.write(Asc("F") & "<br />")
document.write(Asc("f") & "<br />")
document.write(Asc("2") & "<br />")
document.write(Asc("#") & "<br />")
</script>
document.write(Asc("A") & "<br />")
document.write(Asc("a") & "<br />")
document.write(Asc("F") & "<br />")
document.write(Asc("f") & "<br />")
document.write(Asc("2") & "<br />")
document.write(Asc("#") & "<br />")
</script>
The output of the code above will be:
65
97
70
102
50
35
97
70
102
50
35
Try it yourself »
Example 2
Asc returns the ANSI code of only the first character in a string:
<script type="text/vbscript">
document.write(Asc("W") & "<br />")
document.write(Asc("W3Schools.com"))
</script>
document.write(Asc("W") & "<br />")
document.write(Asc("W3Schools.com"))
</script>
The output of the code above will be:
87
87
87
Try it yourself »
Example 3
How to return the ANSI code of all the characters in a string:
<script type="text/vbscript">
txt="W3schools.com"
for i=1 to len(txt)
document.write(Asc(mid(txt,i,1)) & "<br />")
next
</script>
txt="W3schools.com"
for i=1 to len(txt)
document.write(Asc(mid(txt,i,1)) & "<br />")
next
</script>
The output of the code above will be:
87
51
115
99
104
111
111
108
115
46
99
111
109
51
115
99
104
111
111
108
115
46
99
111
109
Try it yourself »
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