我当前的正则表达式格式只允许数字，包括正数，负数和浮点数。
"regex": /^[\-\+]?(([0-9]+)([\.,]([0-9]+))?|([\.,]([0-9]+))?)$/,
如何以我当前的正则表达式格式允许（添加）美元和逗号？
更新
HTML
<input type="text" name="amt[]" placeholder="0.00" size="10" id="validation-required"
class="input-unstyled input-sep validate[required, custom[price]]">
jquery验证
(function($){
$.fn.validationEngineLanguage = function(){
};
$.validationEngineLanguage = {
newLang: function(){
$.validationEngineLanguage.allRules = {
"required": { // Add your regex rules here, you can take telephone as an example
"regex": "none",
"alertText": "* This field is required",
"alertTextCheckboxMultiple": "* Please select an option",
"alertTextCheckboxe": "* This checkbox is required",
"alertTextDateRange": "* Both date range fields are required"
},
"dateRange": {
"regex": "none",
"alertText": "* Invalid ",
"alertText2": "Date Range"
},
"dateTimeRange": {
"regex": "none",
"alertText": "* Invalid ",
"alertText2": "Date Time Range"
},
"minSize": {
"regex": "none",
"alertText": "* Minimum ",
"alertText2": " characters allowed"
},
"maxSize": {
"regex": "none",
"alertText": "* Maximum ",
"alertText2": " characters allowed"
},
"groupRequired": {
"regex": "none",
"alertText": "* You must fill one of the following fields"
},
"min": {
"regex": "none",
"alertText": "* Minimum value is "
},
"max": {
"regex": "none",
"alertText": "* Maximum value is "
},
"past": {
"regex": "none",
"alertText": "* Date prior to "
},
"future": {
"regex": "none",
"alertText": "* Date past "
},
"maxCheckbox": {
"regex": "none",
"alertText": "* Maximum ",
"alertText2": " options allowed"
},
"minCheckbox": {
"regex": "none",
"alertText": "* Please select ",
"alertText2": " options"
},
"equals": {
"regex": "none",
"alertText": "* Fields do not match"
},
"creditCard": {
"regex": "none",
"alertText": "* Invalid credit card number"
},
"phone": {
// credit: jquery.h5validate.js / orefalo
"regex": /^([\+][0-9]{1,3}[ \.\-])?([\(]{1}[0-9]{2,6}[\)])?([0-9 \.\-\/]{3,20})((x|ext|extension)[ ]?[0-9]{1,4})?$/,
"alertText": "* Invalid phone number"
},
"email": {
// Shamelessly lifted from Scott Gonzalez via the Bassistance Validation plugin http://projects.scottsplayground.com/email_address_validation/
"regex": /^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i,
"alertText": "* Invalid email address"
},
"integer": {
"regex": /^[\-\+]?\d+$/,
"alertText": "* Not a valid integer"
},
"price": {
// Number, including positive, negative, and floating decimal. credit: orefalo
"regex": /^[\-\+]?(([0-9]+)([\.,]([0-9]+))?|([\.,]([0-9]+))?)$/,
"alertText": "* Invalid floating decimal number"
},
"date": {
"regex": /^\d{4}[\/\-](0?[1-9]|1[012])[\/\-](0?[1-9]|[12][0-9]|3[01])$/,
"alertText": "* Invalid date, must be in YYYY-MM-DD format"
},
"ipv4": {
"regex": /^((([01]?[0-9]{1,2})|(2[0-4][0-9])|(25[0-5]))[.]){3}(([0-1]?[0-9]{1,2})|(2[0-4][0-9])|(25[0-5]))$/,
"alertText": "* Invalid IP address"
},
"url": {
"regex": /^(https?|ftp):\/\/(((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:)*@)?(((\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]))|((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?)(:\d*)?)(\/((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)+(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)*)*)?)?(\?((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|[\uE000-\uF8FF]|\/|\?)*)?(\#((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|\/|\?)*)?$/i,
"alertText": "* Invalid URL"
},
"onlyNumberSp": {
"regex": /^[0-9\ ]+$/,
"alertText": "* Numbers only"
},
"onlyLetterSp": {
"regex": /^[a-zA-Z\ \']+$/,
"alertText": "* Letters only"
},
"onlyLetterNumber": {
"regex": /^[0-9a-zA-Z]+$/,
"alertText": "* No special characters allowed"
},
// --- CUSTOM RULES -- Those are specific to the demos, they can be removed or changed to your likings
"ajaxUserCall": {
"url": "ajaxValidateFieldUser",
// you may want to pass extra data on the ajax call
"extraData": "name=eric",
"alertText": "* This user is already taken",
"alertTextLoad": "* Validating, please wait"
},
"ajaxUserCallPhp": {
"url": "phpajax/ajaxValidateFieldUser.php",
// you may want to pass extra data on the ajax call
"extraData": "name=eric",
// if you provide an "alertTextOk", it will show as a green prompt when the field validates
"alertTextOk": "* This username is available",
"alertText": "* This user is already taken",
"alertTextLoad": "* Validating, please wait"
},
"ajaxNameCall": {
// remote json service location
"url": "ajaxValidateFieldName",
// error
"alertText": "* This name is already taken",
// if you provide an "alertTextOk", it will show as a green prompt when the field validates
"alertTextOk": "* This name is available",
// speaks by itself
"alertTextLoad": "* Validating, please wait"
},
"ajaxNameCallPhp": {
// remote json service location
"url": "phpajax/ajaxValidateFieldName.php",
// error
"alertText": "* This name is already taken",
// speaks by itself
"alertTextLoad": "* Validating, please wait"
},
"validate2fields": {
"alertText": "* Please input HELLO"
},
//tls warning:homegrown not fielded
"dateFormat":{
"regex": /^\d{4}[\/\-](0?[1-9]|1[012])[\/\-](0?[1-9]|[12][0-9]|3[01])$|^(?:(?:(?:0?[13578]|1[02])(\/|-)31)|(?:(?:0?[1,3-9]|1[0-2])(\/|-)(?:29|30)))(\/|-)(?:[1-9]\d\d\d|\d[1-9]\d\d|\d\d[1-9]\d|\d\d\d[1-9])$|^(?:(?:0?[1-9]|1[0-2])(\/|-)(?:0?[1-9]|1\d|2[0-8]))(\/|-)(?:[1-9]\d\d\d|\d[1-9]\d\d|\d\d[1-9]\d|\d\d\d[1-9])$|^(0?2(\/|-)29)(\/|-)(?:(?:0[48]00|[13579][26]00|[2468][048]00)|(?:\d\d)?(?:0[48]|[2468][048]|[13579][26]))$/,
"alertText": "* Invalid Date"
},
//tls warning:homegrown not fielded
"dateTimeFormat": {
"regex": /^\d{4}[\/\-](0?[1-9]|1[012])[\/\-](0?[1-9]|[12][0-9]|3[01])\s+(1[012]|0?[1-9]){1}:(0?[1-5]|[0-6][0-9]){1}:(0?[0-6]|[0-6][0-9]){1}\s+(am|pm|AM|PM){1}$|^(?:(?:(?:0?[13578]|1[02])(\/|-)31)|(?:(?:0?[1,3-9]|1[0-2])(\/|-)(?:29|30)))(\/|-)(?:[1-9]\d\d\d|\d[1-9]\d\d|\d\d[1-9]\d|\d\d\d[1-9])$|^((1[012]|0?[1-9]){1}\/(0?[1-9]|[12][0-9]|3[01]){1}\/\d{2,4}\s+(1[012]|0?[1-9]){1}:(0?[1-5]|[0-6][0-9]){1}:(0?[0-6]|[0-6][0-9]){1}\s+(am|pm|AM|PM){1})$/,
"alertText": "* Invalid Date or Date Format",
"alertText2": "Expected Format: ",
"alertText3": "mm/dd/yyyy hh:mm:ss AM|PM or ",
"alertText4": "yyyy-mm-dd hh:mm:ss AM|PM"
}
};
}
};
$.validationEngineLanguage.newLang();
})(jQuery);
答案 0 :(得分：3)
如果您希望保留字符（例如$，^等）在您的正则表达式中匹配，只需使用反斜杠转义它们，例如\$。
答案 1 :(得分：2)
“正则表达式”：/ ^ [ - +]？（（[0-9] +）（。，）？|（。，）？）$ /，
你目前的正则表达式有点过于复杂。我知道你想要匹配一个可选的美元符号，然后是一个千位数，可选地带有两个小数位。我假设您实际上不需要+或-符号，并且您只需要小数点，并且它们只是来自您从某些教程中复制粘贴的内容。
试试这个：
/^\$?[1-9]\d?(?:,\d{3})*(?:\.\d{2})?$/