Reduce A String
By Guy Watson
Expert Author
Article Date: 2004-05-24
This morning i needed to reduce any given string to a certain length and then place a pattern at the end of the string, in this case a simple '....' but the reduction had to take into account full words, meaning, i didnt want to just split the string in any old place and leave parts of a word in the final string. So i created this little String Exstension which i thought may come in useful for some other people! Seems to work great for me....
You pass this method of the String object, a length to cut the string down to, and a pattern that you want to be returned at the end of the string:
String.prototype.reduce=function(l,p)
{
if(this.length<=l) return this;
var words=this.split(" ")
var numWords=words.length
var output=[]
var ol,cWord,w
for(w=0;w {
cWord=words[w]
cwl=cWord.length
if((ol+cwl)<=l)
{
output.push(cWord)
ol+=cwl+1
}
else break
}
return output.join(" ")+(this.length>l) ? p
}
And here is how you would use this method:
rhyme="Bah bah, black sheep, have you any wool?"
cutRhyme=rhyme.reduce(22,"...")
For examples sake:
trace(cutRhyme);
Outputs:
Bah bah black sheep...
About the Author:
Guy Watson (or FlashGuru as he is also known) has been an active, well
recognized figure in the Flash community for over four years,
supporting the community with tutorials, source files, moderating the
Flashkit forums, and running his own Flash resource Web site,
FlashGuru's MX 101. Guy was one of two developers who created the ever
popular, award winning zoom interface for Relevare and now runs his
own company, FlashGuru LTD, which builds Flash Games & Applications
for clients such as Comic Relief, Egg and Channel 4. |
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