javascript Javascript正则表达式在每第3个和第4个字符后添加破折号
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Javascript Regular Expression to add dash after every 3rd and 4th characters
提问by GGio
The following regex:
以下正则表达式：
x.toString().replace(/\B(?=(?:\d{3})+(?!\d))/g, "-");
adds dash after each 3rdcharacter so entered 123456789turns into 123-456-789.
Im trying to use this regex to format phone number. The problem arises on the 10th character. So entered 1234567890turns into 1-234-567-890.
在每个第三个字符后添加破折号，因此输入123456789变为123-456-789. 我试图使用这个正则表达式来格式化电话号码。问题出现在第 10 个字符上。于是进入1234567890变成了1-234-567-890。
How would I modify the above regex to turn strings that have 10 digits into 123-456-7890. I use this regex because this happens as user is typing in uses keyupevent.
我将如何修改上述正则表达式以将具有 10 位数字的字符串转换为123-456-7890. 我使用这个正则表达式是因为当用户输入使用keyup事件时会发生这种情况。
If you know easier or better way of doing this please help me out, dashes has to be added while user is typing in. No other characters allowed.
如果您知道更简单或更好的方法，请帮助我，用户输入时必须添加破折号。不允许使用其他字符。
Notes:
笔记：
- Cant use Jquery Masked input plugin (because if editing the middle character it's focus gets messed up)
- 不能使用 Jquery Masked 输入插件（因为如果编辑中间字符，它的焦点会被弄乱）
回答by georg
How about
怎么样
> "12345678".match(/\d{3}(?=\d{2,3})|\d+/g).join("-")
"123-456-78"
> "123456789".match(/\d{3}(?=\d{2,3})|\d+/g).join("-")
"123-456-789"
> "1234567890".match(/\d{3}(?=\d{2,3})|\d+/g).join("-")
"123-456-7890"
回答by basilikum
Do you need to use regular expressions for everything or would maybe something like this also help you out?
您是否需要对所有内容都使用正则表达式，或者像这样的东西也可以帮助您？
function convertToValidPhoneNumber(text) {
var result = [];
text = text.replace(/[^\d]/g,"");
while (text.length >= 6) {
result.push(text.substring(0, 3));
text = text.substring(3);
}
if(text.length > 0) result.push(text);
return result.join("-");
}
You could use this function everytime the text in your inputfield changes. It will produce the following results:
每次输入字段中的文本更改时，您都可以使用此功能。它将产生以下结果：
"12345678" -> "123-45678"
"123d456789" -> "123-456-789"
"123-4567-89" -> "123-456-789"
回答by Brian Thornton
If you ALREADY have the complete number or string
如果您已经拥有完整的数字或字符串
var x = "329193914";
console.log(x.replace(/(\d{3})(\d{3})(\d{3})/, "--"));
If you WANT AS someone is typing...
如果你想有人在打字...
$('#locAcct').keyup(function () {
var foo = $(this).val().split("-").join(""); // remove hyphens
if (foo.length > 0) {
foo = foo.match(new RegExp('.{1,3}', 'g')).join("-");
}
$(this).val(foo);
});
回答by Sheraz Ahmed
I believe the simplest way would be to add dash after every n digitswould be like
我相信最简单的方法是在每个之后添加破折号n digits就像
var a = $('#result');
var x = "<p>asiija kasdjflaksd jflka asdkhflakjshdfk jasd flaksjdhfklasd f</p><p>12345678912345678912345678912312344545545456789</p>"
a.html(x.replace(/(\d{15})/g, "-"));<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="result"></div>