silly strings

[David Harrison]

How do I detect whether a string has a certain character in it and then if so, how would I find where it is in the string?

[Vladdy]

Learn and enjoy the power: http://devedge.netscape.com/library/manuals/2000/javascript/1.5/guide/regexp.html#1010922

[David Harrison]

How would I see if a string contains anything other than numbers and if so remove all of the non numbers. Also if the sting to start with didn't have any numbers in then give the string a default value of 1000.

[Charles]

<script type="text/javascript">
<!--
String.prototype.getNumber = function () {if (!/\d/.test(this)) return 1000; return this.replace(/\D/g, '')}

alert ('fee31fie41foe59fum27'.getNumber());
// -->
</script>

[David Harrison]

Thanks for the script it works great but could you give me a brief explanation as to how it works please.

[AdamBrill]

Like this it is a bit easier to read(and I added comments):<script type="text/javascript">
<!--
String.prototype.getNumber = function () { \\creates a String.getNumber function
if (!/\d/.test(this)) \\if there are aren't any numbers, do this
return 1000; \\change this to whatever you want it to return if there aren't any number in the string
return this.replace(/\D/g, '') \\if there are numbers, run a RegEx to change all of the non-digits to ''
}

alert ('asasfd'.getNumber()); \\run the getNumber function on the string
// -->
</script>

[Charles]

I like this one even better:

<script type="text/javascript">
<!--
String.prototype.getNumber = function () {return /\d/.test(this) ? this.replace(/\D/g, '') : 1000}

alert ('fee3.1fie41foe59fum27'.getNumber());
// -->
</script>

[AdamBrill]

LoL... I think your just trying to confuse lavalamp... :D

[David Harrison]

No I spotted the mod., it's like changing:
if(a==b){a=3;}
else{a=4;}

into:
a=(a==b)?3:4;