Not without a lot of trial and error.
Here's something simple I've had for years.
//********************************************************************************
// JavaScript String Extensions
//********************************************************************************
// String extensions for wordwrap + trimming
//String.wordWrap(maxLength: Integer, [breakWith: String = "\n"], [cutWords: Boolean = false]): String
//Returns an string with the extra characters/words "broken".
//maxLengthmaximum amount of characters per line
//breakWithstring that will be added whenever it's needed to break the line
//cutWordsif true, the words will be cut, so the line will have exactly "maxLength" characters, otherwise the words won't be cut
//
String.prototype.wordWrap = function(m, b, c)
{
var i, j, s, r = this.split("\n");
if(m > 0)
{
for(i in r)
{
for(s = r[i], r[i] = ""; s.length > m; j = c ? m : (j = s.substr(0, m).match(/\S*$/)).input.length - j[0].length || m,r[i] += s.substr(0, j) + ((s = s.substr(j)).length ? b : ""));
r[i] += s;
}
}
return r.join("\n");
};
String.prototype.wordWrapIntoArray = function(m, b, c)
{
var i, j, s, r = this.split("\n");
if(m > 0)
{
for(i in r)
{
for(s = r[i], r[i] = ""; s.length > m; j = c ? m : (j = s.substr(0, m).match(/\S*$/)).input.length - j[0].length || m,r[i] += s.substr(0, j) + ((s = s.substr(j)).length ? b : ""));
r[i] += s;
}
}
return r;
};
String.prototype.trim = function()
{
return this.replace(/^\s+|\s+$/g,"");
};
String.prototype.ltrim = function()
{
return this.replace(/^\s+/,"");
};
String.prototype.rtrim = function()
{
return this.replace(/\s+$/,"");
};
//********************************************************************************
// JavaScript String Extensions
//********************************************************************************
Hope this will get you started. To really do this right, you need to examine the textWidth/textHeight required and adjust text accordingly which is much more complex than what I posted above.
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