I'm a noob to actionscript so this should be easy:
How do I delete leading characters from a string? I have a string that contains (at times) both numeric & non-numeric characters. If I want to delete all the leading 9's, how would I do that?
var testVar:String = '999998gjek74k';
I want the testVar to be 'gjek74k'.
So far, I have (though not working):
var testVar:String = '999998gjek74k';
testVar.replace(/^0/g, "");
.replace doesn't modify the string. It returns the replaced string.
testVar = testVar.replace(/^\d+/, '');
(Also the pattern /^0/g is wrong, as commented by #santa).
Assuming you are testing the variables and not multiple lines:
private var testVar = testVar.replace(/^\d*(.+)$/,"$1");
Related
I've got this string :
var str:String = mySharedObject.data.theDate;
where mySharedObject.data.theDate has some words (not always the same words has it depends on which button the user clicked).
So mySharedObject.data.theDate = "words words words".
Is it possible to add a "/" between each word ? (without knowing which words are in mySharedObject.data.theDate).
In order to have:
mySharedObject.data.theDate = "words/words/words".
Edit : You can replace " " with "/" in your string, this will split string with " " separator and then join with "/"
mySharedObject.data.theDate= mySharedObject.data.theDate.split(" ").join("/")
You can also do that using String.replace() with a little regular expression which will replace all spaces (notice here the g (global) flag to replace all instances), like this :
var s:String = 'word word word';
trace(s.replace(/\s/g, '/')); // gives : word/word/word
And for more about regular expressions take a look here.
Hope that can help.
I am attempting to apply a mask to another string to replace all wildcards in one string with the matching characters in the matching index while keeping the non-wildcard characters.
Eg:
starting string: "1234-234-3456-45-9876"
mask string: "____-___-0001-__-____"
when applied together: "1234-234-0001-45-9876"
Is this some usage of Regex I haven't seen before? I tried to understand the string.replace() type methods, but I don't think these apply.
Hope this will help you:
private function checkString():void
{
var starting:String = "1234-234-3456-45-9876";
var mask:String = "____-___-0001-__-____";
for(var i:int=0;i<starting.length;i++)
{
if(mask.charAt(i).match("[0-9]"))
{
starting = starting.substr(0,i) + mask.charAt(i) + starting.substr(i+1);
}
}
Alert.show(starting);
}
It will mask your string. Check result of alert.
I have a textInput control that sends .txt value to an array collection. The array collection is a collection of US zip codes so I use a regular expression to ensure I only get digits from the textInput.
private function addSingle(stringLoader:ArrayCollection):ArrayCollection {
arrayString += (txtSingle.text) + '';
var re:RegExp = /\D/;
var newArray:Array = arrayString.split(re);
The US zip codes start at 00501. Following the debugger, after the zip is submitted, the variable 'arrayString' is 00501. But once 'newArray' is assigned a vaule, it removes the first two 0s and leaves me with 501. Is this my regular expression doing something I'm not expecting? Could it be the array changing the value? I wrote a regexp test in javascript.
<script type="text/javascript">
var str="00501";
var patt1=/\D/;
document.write(str.match(patt1));
</script>
and i get null, which leads me to believe the regexp Im using is fine. In the help docs on the split method, I dont see any reference to leading 0s being a problem.
**I have removed the regular expression from my code completely and the same problem is still happening. Which means it is not the regular expression where the problem is coming from.
Running this simplified case:
var arrayString:String = '00501';
var re:RegExp = /\D/;
var newArray:Array = arrayString.split(re);
trace(newArray);
Yields '00501' as expected. There's nothing in the code you've posted that would strip leading zeros. You may want to dig around a bit more.
This smells suspiciously like Number coercion: Number('00501') yields 501. Read through the docs for implicit conversions and check if any pop up in your code.
What about this ?
/^\d+$/
You can also specify exactly 5 numbers like this :
/^\d{5}$/
I recommend just getting the zip codes instead of splitting on non-digits (especially if 'arrayString' might have multiple zip codes):
var newArray:Array = [];
var pattern:RegExp = /(\d+)/g;
var zipObject:Object;
while ((zipObject = pattern.exec(arrayString)) != null)
{
newArray.push(zipObject[1]);
}
for (var i:int = 0; i < newArray.length; i++)
{
trace("zip code " + i + " is: " + newArray[i]);
}
I am working on a regular expression and I need to extract two parts of an expression that is being imported through a flashvars.
//sample data similar to what comes in from the flashvars. Note that the spaces are not after the and symbol, they are there because the html strips it.
var sampleText:String = "height1=60& amp;height2=80& amp;height3=95& amp;height4=75& amp;"
var heightRegExp:RegExp = /height\d/g; //separates out the variables
var matches:Array = sampleText.match(heightRegExp);
Now I need help isolating the values of each variable and putting them in an array...For instance, 60, 80, etc. I know I should be able to write this regular expression, but I just can't get the exec expression right. Any help would be really appreciated!
sorry for not answering the question with regexes directly. I would do this:
var keyvalues:Array = sampleText.split("& amp;");
var firstkey:String = keyvalues[0].split("=")[0];
var firstvalue:String = keyvalues[0].split("=")[1];
Would that help beside the fact, that it is not using RegEx?
Neither the =, & or the ; are special characters, so I think you can use
=|&
in a split call and then the values will be in the odd indices and the height2 style names would be in the even indices.
You can use URLUtil.stringToObject()
Something like this should work:
var s:String = "name=Alex&age=21";
var o:Object = URLUtil.stringToObject(s, "&", true);
However, if you're just getting the flashvars, you should pull them from the loaderInfo of the root.
this.root.loaderInfo.parameters;
In action script var x:String="123abc" I have to check any character, for that string.
i.e. here "abc" is that string so I give an alert that this string should contain only numbers.
How can I do that?
Do you mean to say that you would like to dispatch an alert if a string contains letters
var testVar:String = '123abc';
var pattern:RegExp = /[a-zA-Z]/g;
if( testVar.search(pattern) == -1 )
{
//all good there's no letters in here
}
else
{
//Alert, alert, letter detected!
}
the "pattern" variable is a RegularExpression that's adaptable. Here I'm only checking for letters... If you need more control, get more info about RegularExpressions or come back here with the specific filter you'd like to implement.
I think you are looking for Regular Expression support in AS3.
If the user is inputting text via a TextField then you can set the restrict property to limit the characters that can be entered into the textfield:
textFieldInstance.restrict = "0-9";
TextField.restrict documentation:
http://livedocs.adobe.com/flex/3/langref/flash/text/TextField.html#restrict