Javascript: Главна буква на всяка дума в низ

Поздрави, искам да напиша с главни букви всяка дума в скрипт, за това измислих такъв метод:

//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;
}

Сега работи за обикновени думи, започващи след и emppy char " ".

Въпреки това искам да се уверя, че не успява за такива низове:

wordToUpper('hello my name is Hellnar.it doesnt work.') -> Hello My Name Is Hellnar.it Doesnt Work. "то" трябваше да е с главни букви.

wordToUpper('hello my name is (hellnar).') -> Hello My Name Is (hellnar). "Hellnar" трябваше да пише с главни букви.

за разбирането

Забележка: Моля, не css classic text-transform: capitalize; решение, тъй като тези данни ще се използват за публикуване на формуляр.


person Hellnar    schedule 24.11.2010    source източник


Отговори (5)


Следното ще обработва всички Unicode букви, за разлика от всяко решение, използващо \w, \b или [a-z] и т.н. Разбира се, регулярният израз е доста голям. Списъци със знаци, взети от отличната XRegExp библиотека на Стив Левитан.

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
person Tim Down    schedule 24.11.2010
comment
Всъщност можете да намалите размера на променливата letters: случайно включих всички главни букви, което не е необходимо в този случай. - person Tim Down; 25.11.2010
comment
@DanAbramov: Вярно. Мисля, че го адаптирах от тук: xregexp.com/plugins/xregexp-unicode-base. js - person Tim Down; 12.02.2012

split може да приема регулярен израз. Така че вместо да използвате ' ' разделяне на граница на дума като така:

val = val.toLowerCase().split(/\b/);

person Cfreak    schedule 24.11.2010

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(); } );

или като функция

String.prototype.capitalize = function(){
    return this.replace( /(^|\s)([a-z])/g , function(m,p1,p2){ return p1+p2.toUpperCase(); } );
};

mystring.capitalize();

кредит: http://www.mediacollege.com/internet/javascript/text/case-capitalize.html

person castis    schedule 24.11.2010
comment
проблемът е, че той също пише с главни букви знаци, които са чужди като Böar -› BöAr или Ülküz -› ÜLküZ - person Hellnar; 24.11.2010

function wordToUpper(str) {
    return (str + '').replace( /(^|[^a-z])([a-z])/g, function (m,p1,p2) {
        return p1+p2.toUpperCase();        
    });
}

комбинация от кодове - коригира проблема

person mpapis    schedule 24.11.2010

Отговорът, даден от castis, е най-добрият, но тъй като искахте да се броят и знаци без интервали, които са препинателни знаци, ще ви трябва това:

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();
person Orbling    schedule 24.11.2010
comment
проблемът е, че той също пише с главни букви знаци, които са чужди като Böar -› BöAr или Ülküz -› ÜLküZ - person Hellnar; 24.11.2010
comment
@Hellnar В този случай трябва да добавите чужди знаци с малки букви, които да избягвате, към блоковете [a-z] в рамките на регулярния израз. - person Orbling; 24.11.2010