是否有一个简单的方法来转换字符串标题大小写?例如,约翰·史密斯变成了约翰·史密斯。我不是在寻找像John Resig的解决方案那样复杂的东西,只是(希望)一些一两行代码。
当前回答
这个解决方案将标点符号考虑到新句子中,处理引用,将小词转换为小写,忽略首字母缩写或全大写单词。
var stopWordsArray = new Array("a", "all", "am", "an", "and", "any", "are", "as", "at", "be", "but", "by", "can", "can't", "did", "didn't", "do", "does", "doesn't", "don't", "else", "for", "get", "gets", "go", "got", "had", "has", "he", "he's", "her", "here", "hers", "hi", "him", "his", "how", "i'd", "i'll", "i'm", "i've", "if", "in", "is", "isn't", "it", "it's", "its", "let", "let's", "may", "me", "my", "no", "of", "off", "on", "our", "ours", "she", "so", "than", "that", "that's", "thats", "the", "their", "theirs", "them", "then", "there", "there's", "these", "they", "they'd", "they'll", "they're", "they've", "this", "those", "to", "too", "try", "until", "us", "want", "wants", "was", "wasn't", "we", "we'd", "we'll", "we're", "we've", "well", "went", "were", "weren't", "what", "what's", "when", "where", "which", "who", "who's", "whose", "why", "will", "with", "won't", "would", "yes", "yet", "you", "you'd", "you'll", "you're", "you've", "your");
// Only significant words are transformed. Handles acronyms and punctuation
String.prototype.toTitleCase = function() {
var newSentence = true;
return this.split(/\s+/).map(function(word) {
if (word == "") { return; }
var canCapitalise = true;
// Get the pos of the first alpha char (word might start with " or ')
var firstAlphaCharPos = word.search(/\w/);
// Check for uppercase char that is not the first char (might be acronym or all caps)
if (word.search(/[A-Z]/) > 0) {
canCapitalise = false;
} else if (stopWordsArray.indexOf(word) != -1) {
// Is a stop word and not a new sentence
word.toLowerCase();
if (!newSentence) {
canCapitalise = false;
}
}
// Is this the last word in a sentence?
newSentence = (word.search(/[\.!\?:]['"]?$/) > 0)? true : false;
return (canCapitalise)? word.replace(word[firstAlphaCharPos], word[firstAlphaCharPos].toUpperCase()) : word;
}).join(' ');
}
// Pass a string using dot notation:
alert("A critical examination of Plato's view of the human nature".toTitleCase());
var str = "Ten years on: a study into the effectiveness of NCEA in New Zealand schools";
str.toTitleCase());
str = "\"Where to from here?\" the effectivness of eLearning in childhood education";
alert(str.toTitleCase());
/* Result:
A Critical Examination of Plato's View of the Human Nature.
Ten Years On: A Study Into the Effectiveness of NCEA in New Zealand Schools.
"Where to From Here?" The Effectivness of eLearning in Childhood Education. */
其他回答
https://lodash.com/docs/4.17.11#capitalize
使用Lodash库!!更可靠的
_.capitalize('FRED'); => 'Fred'
Greg Dean的解决方案原型方案:
String.prototype.capitalize = function() {
return this.replace(/\w\S*/g, function(txt){return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase();});
}
试试这个,最短的方法:
str.replace(/(^[a-z])|(\s+[a-z])/g, txt => txt.toUpperCase());
下面是我的函数,它转换为标题大小写,但也保留了定义的首字母缩写为大写,小词为小写:
String.prototype.toTitleCase = function() {
var i, j, str, lowers, uppers;
str = this.replace(/([^\W_]+[^\s-]*) */g, function(txt) {
return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase();
});
// Certain minor words should be left lowercase unless
// they are the first or last words in the string
lowers = ['A', 'An', 'The', 'And', 'But', 'Or', 'For', 'Nor', 'As', 'At',
'By', 'For', 'From', 'In', 'Into', 'Near', 'Of', 'On', 'Onto', 'To', 'With'];
for (i = 0, j = lowers.length; i < j; i++)
str = str.replace(new RegExp('\\s' + lowers[i] + '\\s', 'g'),
function(txt) {
return txt.toLowerCase();
});
// Certain words such as initialisms or acronyms should be left uppercase
uppers = ['Id', 'Tv'];
for (i = 0, j = uppers.length; i < j; i++)
str = str.replace(new RegExp('\\b' + uppers[i] + '\\b', 'g'),
uppers[i].toUpperCase());
return str;
}
例如:
"TO LOGIN TO THIS SITE and watch tv, please enter a valid id:".toTitleCase();
// Returns: "To Login to This Site and Watch TV, Please Enter a Valid ID:"
它并不短,但这是我最近在学校的一个作业中想到的:
var myPoem = '什么是jQuery,但一个误解的对象?' // jQuery不是被误解的对象吗?JQuery不是一个被误解的对象吗? / /代码 Var大写=函数(str) { var strArr = str.split(' '); var newArr = []; For (var I = 0;i < strar .length;我+ +){ newar .push(strArr[i].charAt(0).toUpperCase() + strArr[i].slice(1)) }; newArr返回。加入(' ') } var fixedPoem =大写(myPoem); 警报(fixedPoem);