carlarne
asked on
How to find out if a string contains number
Its really the oposite problem i have.
I have a string and want to find out if there are some character in it, or blank space. Its a typically prize and i want it on the form 200000 NOT 200 000 or 200.000 f.ex
I have a string and want to find out if there are some character in it, or blank space. Its a typically prize and i want it on the form 200000 NOT 200 000 or 200.000 f.ex
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ASKER
Thanks, its working very good
<HTML>
<HEAD><TITLE>Test</TITLE>
<SCRIPT LANGUAGE="JavaScript">
function check(str) {
for(err="", i=0; i<str.length; i++, err+="_") {
ch = str.charAt(i);
if(ch < '0' || ch > '9') {
alert("Bad number:\n"+err+"v\n"+str+"
return;
}
}
alert("Good number:\n"+str);
}
</SCRIPT>
</HEAD>
<BODY>
<FORM NAME=f>
<INPUT NAME=num SIZE=10>
<INPUT TYPE=BUTTON VALUE=Check onClick='check(f.num.value
</FORM>
</BODY>
</HTML>