我正在使用一系列正则表达式和jquery函数来格式化9位数的文本框。代码如下所示:
function FormatBox() {
var TheText = $('#TheBox').val();
//remove leading 0
if (TheText.charAt(0) === '0') {
TheText = TheText.substring(1);
}
//take only digits
TheText = TheText.replace(/\D/g, '');
//take only the first 9 digits
if (TheText.length > 9) {
TheText = TheText.substring(0, 9);
}
//reformat string
TheText = TheText.replace(/(\d{1})?(\d{2})?(\d{2})?(\d{2})?(\d{2})?/, '$1 $2 $3 $4 $5');
//trim string
TheText = $.trim(TheText);
$('#TheBox').val(TheText);
}
function Start() {
$('#TheBox').keyup(FormatBox);
}
$(Start);
实际上,它一切正常,但我希望将这些将正则表达式和jquery混合在一起的规则组合成一个正则表达式,但我很难让它运行起来。要将重新格式化的字符串添加到约束中,我需要做些什么? jsFiddle是here。
感谢。
答案 0 :(得分:2)
试试这个:
TheText = TheText.replace(/(\d{1,2})(?=(?:\d{2})+$)/g, '$1 ');
答案 1 :(得分:1)
这并没有将它全部放入1个正则表达式中,但它确实简化了一点:
$(Start);
function Start() {
var box = $('#TheBox').keyup(FormatBox);
function FormatBox() {
box.val($.trim(box.val()
.replace(/(^0+|\D)/g, '') // gets rid of all leading zeros (in case of paste) and any non-numbers
.substring(0, 9) // or .replace(/^(.{0,9}).*/, '$1')
.replace(/(\d)?(\d{2})?(\d{2})?(\d{2})?(\d{2})?/, '$1 $2 $3 $4 $5'))
);
}
}