jquery - 英尺和英寸的正则表达式 - 带小数和分数

Question

我正在创建一个用于项目长度的输入掩码。此输入将在模糊时转换为“正确”格式，但它应该接受数字、小数、空格、单引号、双引号和/分数(无字母)。

我有一个好的开始，但我不是正则表达式大师，觉得我的模式太复杂了。因此允许使用以下值:

5 6(英尺和英寸之间用空格分隔)

5'6"(正确格式的英尺和英寸)

5.2 6(小数英尺以空格分隔)

5.2'6"(正确格式的十进制英尺)

5 6.1(十进制英寸，以空格分隔)

5'6.1"(正确格式的十进制英寸)

5.2 6.1(小数英尺和英寸以空格分隔)

5.2'6.1"(正确格式的十进制英尺和英寸)

5 6 1/2(以上任意组合，后跟空格和分数)

5.2'6.1 1/2"(同样带有小数)

78 英寸(仅英寸)

78.4"(仅带有小数点的英寸)

我知道，相当挑剔。我有一些正在进行中的工作，并且我已经将其分解以使其更具可读性(至少对我自己而言)。 http://jsfiddle.net/t37m0txu/383/

// allow numbers
var p_num = "[0-9]";

// numbers are up to 9 characters (it needs a range, for some reason)
var p_range = "{0,9}";

// allow a single decimal
var p_dec = "([.]{0,1})";

// allow a single space (needs to happen only if not directly followed by a decimal)
var p_space = "([ ]{0,1})";

// numbers, possible single decimal and/or space
var p_base = p_num + p_range + p_dec + p_space;

// only allow a single/double quote after a number
var p_afternum = "?(?=" + p_num + ")";

// allow a single or double quote
var p_quote = "(\'(0?" + p_base + ")?\|\"$)";

// issues: 
// i do not need a range/cap on numbers
// after using decimal or space - only one number is allowed to follow (do not cap the range on numbers, only decimal/space)
// do not allow a space directly following a decimal
// do not allow a decimal directly following a single or double quote

var ex = "(" + p_base + ")" + p_afternum + p_quote + "(0?" + p_base + ")?\""

Answer 1

如何仅扫描有效的英尺和英寸输入

此扫描使用 REGEX 掩码与输入掩码相结合来创建强大的仅英尺和英寸文本框。

ex = "[\\d]+(?:\\.[\\d]+|)(?:\\s\\d+\\/\\d+|)(?:\\s|\\'|\\\"|)[\\d]+(?:\\.[\\d]+|)(?:\\s\\d+\\/\d+|)(?:\\'|\\\"|)";
$('#feet').inputmask('Regex', { regex: ex });

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://rawgit.com/RobinHerbots/jquery.inputmask/3.x/dist/jquery.inputmask.bundle.js"></script>
So the following values are allowed:<br /><br />

5 6 (feet and inches separated by spaces)<br />
5'6" (feet and inches in the correct format)<br />
5.2 6 (decimal feet separated by spaces)<br />
5.2'6" (decimal feet in the correct format)<br />
5 6.1 (decimal inches separated by spaces)<br />
5'6.1" (decimal inches in the correct format)<br />
5.2 6.1 (decimal feet and inches separated by spaces)<br />
5.2'6.1" (decimal feet and inches in the correct format)<br />
5 6 1/2 (any combination above followed by a space and fraction)<br />
5.2'6.1 1/2" (again with decimals)<br />
78" (only inches)<br />
78.4" (only inches with a decimal)<br />
    
<input id="feet" />

<br />