Html 在数字之间添加空格
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Adding space between numbers
提问by user1768788
I'm trying to make a number input. I've made so my textbox only accepts numbers via this code:
我正在尝试输入数字。我已经让我的文本框只通过这个代码接受数字：
function isNumber(evt) {
evt = (evt) ? evt : window.event;
var charCode = (evt.which) ? evt.which : evt.keyCode;
if (charCode > 31 && (charCode < 48 || charCode > 57)) {
return false;
}
return true;
}
But now the question comes to, how would I create spaces as the user is typing in their number, much like the iPhone's telephone spacing thing, but with numbers so for example if they type in: 1000 it will become 1 000;
但现在问题来了，当用户输入他们的号码时，我将如何创建空格，就像 iPhone 的电话间距一样，但是如果他们输入数字，例如：1000 它将变成 1000；
1
10
100
1 000
10 000
100 000
1 000 000
10 000 000
100 000 000
1 000 000 000
Etc...
等等...
I've tried to read the input from the right for each 3 characters and add a space. But my way is inefficient and when I'm changing the value from 1000 to 1 000 in the textbox, it selects it for some reason, making any key press after that, erase the whole thing.
我试图从右侧读取每 3 个字符的输入并添加一个空格。但是我的方法效率低下，当我将文本框中的值从 1000 更改为 1 000 时，它出于某种原因选择了它，之后按下任何键，擦除整个内容。
If you know how to do this, please refrain from using javascript plugins like jQuery. Thank You.
如果您知道如何执行此操作，请不要使用 jQuery 等 javascript 插件。谢谢你。
回答by Isham Mohamed
For integers use
对于整数使用
function numberWithSpaces(x) {
return x.toString().replace(/\B(?=(\d{3})+(?!\d))/g, " ");
}
For floating point numbers you can use
对于浮点数，您可以使用
function numberWithSpaces(x) {
var parts = x.toString().split(".");
parts[0] = parts[0].replace(/\B(?=(\d{3})+(?!\d))/g, " ");
return parts.join(".");
}
This is a simple regex work. https://developer.mozilla.org/en-US/docs/JavaScript/Guide/Regular_Expressions<< Find more about Regex here.
这是一个简单的正则表达式工作。https://developer.mozilla.org/en-US/docs/JavaScript/Guide/Regular_Expressions<< 在此处了解有关 Regex 的更多信息。
If you are not sure about whether the number would be integer or float, just use 2nd one...
如果您不确定数字是整数还是浮点数，只需使用第二个...
回答by Александр Соловей
Easiest way:
最简单的方法：
1
1
var num = 1234567890,
result = num.toLocaleString() ;// result will equal to "1 234 567 890"
2
2
var num = 1234567.890,
result = num.toLocaleString() + num.toString().slice(num.toString().indexOf('.')) // will equal to 1 234 567.890
3
3
var num = 1234567.890123,
result = Number(num.toFixed(0)).toLocaleString() + '.' + Number(num.toString().slice(num.toString().indexOf('.')+1)).toLocaleString()
//will equal to 1 234 567.890 123
4
4
If you want ',' instead of ' ':
如果你想要 ',' 而不是 ' '：
var num = 1234567.890123,
result = Number(num.toFixed(0)).toLocaleString().split(/\s/).join(',') + '.' + Number(num.toString().slice(num.toString().indexOf('.')+1)).toLocaleString()
//will equal to 1,234,567.890 123
If not working, set the parameter like: "toLocaleString('ru-RU')" parameter "en-EN", will split number by the ',' instead of ' '
如果不起作用，请设置参数如：“toLocaleString('ru-RU')”参数“en-EN”，将按','而不是''分割数字
