问题
Greetings, I want to capitalize each word in a script, for this I have came up with a such method:
//Word Capitalization
function wordToUpper(val) {
newVal = '';
val = val.toLowerCase().split(' ');
for(var c=0; c < val.length; c++) {
newVal += val[c].substring(0,1).toUpperCase() + val[c].substring(1,val[c].length) + ' ';
}
return newVal;
}
Now it works for regular words starting after and emtpy char " ".
However I also want to make sure it fails for such strings:
wordToUpper('hello my name is Hellnar.it doesnt work.') -> Hello My Name Is Hellnar.it Doesnt Work. "it" had to be capital.
wordToUpper('hello my name is (hellnar).') -> Hello My Name Is (hellnar). "Hellnar" had to capital.
Regards
Note: Please not the css classic text-transform: capitalize; solution as this data will be used for form posting.
回答1:
The following will handle all Unicode letters, unlike any solution using \w, \b or [a-z] etc. Admittedly the regular expression is rather large. Character lists taken from Steve Levithan's excellent XRegExp library.
var letters = 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var regex = new RegExp("(^|[^" + letters + "])([" + letters + "])", "g");
function capitalizeWords(str) {
return str.replace(regex, function(s, m1, m2) {
return m1 + m2.toUpperCase();
});
}
alert( capitalizeWords("öar") ); // Öar
回答2:
split can take a regex. So instead of using ' ' split on a word boundary like so:
val = val.toLowerCase().split(/\b/);
回答3:
mystring = "this is a test of the emergency broadcast system";
mystring = mystring.replace( /(^|\s)([a-z])/g , function(m,p1,p2){ return p1+p2.toUpperCase(); } );
or as a function
String.prototype.capitalize = function(){
return this.replace( /(^|\s)([a-z])/g , function(m,p1,p2){ return p1+p2.toUpperCase(); } );
};
mystring.capitalize();
credit: http://www.mediacollege.com/internet/javascript/text/case-capitalize.html
回答4:
function wordToUpper(str) {
return (str + '').replace( /(^|[^a-z])([a-z])/g, function (m,p1,p2) {
return p1+p2.toUpperCase();
});
}
mix of the codes - fixes the issue
回答5:
The answer given by castis is best, but as you wanted non-whitespace characters that were punctuation to count as well, you will need this:
String.prototype.capitalize = function(){
return this.replace(/(^[a-z]|[ .,\(\)\[\]]+[a-z])/g, function(s) {
return s.toUpperCase();
});
};
'hello my name is Hellnar.(it) doesnt work.'.capitalize();
来源：https://stackoverflow.com/questions/4268272/javascript-capitalization-of-each-word-in-string