javascript 将句子转换为 InitCap / 骆驼案例 / 适当案例
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Convert a Sentence to InitCap / camel Case / Proper Case
提问by Tushar Gupta - curioustushar
I have made this code. I want a small regexp for this.
我已经制作了这段代码。我想要一个小的正则表达式。
String.prototype.capitalize = function() {
return this.charAt(0).toUpperCase() + this.slice(1);
}
String.prototype.initCap = function () {
var new_str = this.split(' '),
i,
arr = [];
for (i = 0; i < new_str.length; i++) {
arr.push(initCap(new_str[i]).capitalize());
}
return arr.join(' ');
}
alert("hello world".initCap());
What i want
我想要的是
"hello world".initCap() => Hello World
"hEllo woRld".initCap() => Hello World
“你好世界”.initCap() => 你好世界
"你好世界".initCap() => 你好世界
my above code gives me solution but i want a better and faster solution with regex
我上面的代码给了我解决方案，但我想要一个更好更快的正则表达式解决方案
回答by anubhava
You can try:
你可以试试：
str = "hEllo woRld";
String.prototype.initCap = function () {
return this.toLowerCase().replace(/(?:^|\s)[a-z]/g, function (m) {
return m.toUpperCase();
});
};
alert(str.initCap());
回答by Bishnu Paudel
str="hello";
init_cap=str[0].toUpperCase() + str.substring(1,str.length).toLowerCase();
alert(init_cap);
where str[0] gives 'h' and toUpperCase() function will convert it to 'H' and rest of the characters in the string are converted to lowercase by toLowerCase() function.
其中 str[0] 给出 'h' 并且 toUpperCase() 函数将其转换为 'H' 并且字符串中的其余字符由 toLowerCase() 函数转换为小写。
回答by RJLyders
If you want to account for names with an apostrophe/dash or if a space could potentially be omitted after a period between sentences, then you might want to use \b (beg or end of word) instead of \s (whitespace) in your regular expression to capitalize any letter after a space, apostrophe, period, dash, etc.
如果您想用撇号/破折号来说明名称，或者在句子之间的句号后可能会省略一个空格，那么您可能需要使用 \b（词尾）而不是 \s（空格）正则表达式将空格、撇号、句点、破折号等后的任何字母大写。
str = "hEllo billie-ray o'mALLEY-o'rouke.Please come on in.";
String.prototype.initCap = function () {
return this.toLowerCase().replace(/(?:^|\b)[a-z]/g, function (m) {
return m.toUpperCase();
});
};
alert(str.initCap());
OUTPUT: Hello Billie-Ray O'Malley-O'Rouke.Please Come On In.
输出：你好，Billie-Ray O'Malley-O'Rouke。请进。
