Jquery 输入金额格式限制 插件
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(function($) { $.fn.extend({ money_mode: function(options) { var defaults = { decimal_length: 2,//小数点位数 format: "#,###.00",//格式化类型 locale: "us" }; var options = $.extend(defaults, options); var len = parseInt(options[‘decimal_length‘]); returnthis.each(function() { var input = $(this); input.css("ime-mode", "disabled"); var decimal_point = false; input.bind("keypress", function() { if (event.keyCode == 46) { if (input.val().indexOf(".") != -1 || (input.val().lastIndexOf(".") == (input.val().length - 1))) { returnfalse; } } else { if (decimal_point) returnfalse; elsereturn event.keyCode >= 46 && event.keyCode <= 57; } }); input.bind("blur", function() { // begin失去焦点后字符串格式化 var formatData = formatCodes(options.locale.toLowerCase()); var valid = formatData.valid; var dec = formatData.dec; var group = formatData.group; var neg = formatData.neg; if (input.val() != null && input.val() != ‘‘) { var text = new String(jQuery(input).text()); if (jQuery(input).is(":input")) text = new String(jQuery(input).val()); var isValid = true; for (var i = 0; i < text.length; i++) { if (valid.indexOf(text.charAt(i)) == -1) isValid = false; } if (isValid) { var number = new Number(text.replace(group, ‘‘).replace(dec, ".").replace(neg, "-")); var returnString = ""; var decimalValue = number % 1; if (options.format.indexOf(".") > -1) { var decimalPortion = dec; var decimalFormat = options.format.substring(options.format.lastIndexOf(".") + 1); var decimalString = new String(decimalValue.toFixed(decimalFormat.length)); decimalString = decimalString.substring(decimalString.lastIndexOf(".") + 1); for (var i = 0; i < decimalFormat.length; i++) { if (decimalFormat.charAt(i) == ‘#‘ && decimalString.charAt(i) != ‘0‘) { decimalPortion += decimalString.charAt(i); break; } elseif (decimalFormat.charAt(i) == "0") { decimalPortion += decimalString.charAt(i); } } returnString += decimalPortion } else number = Math.round(number); var ones = Math.floor(number); var onePortion = ""; if (ones == 0) { onePortion = "0"; } else { // find how many digits are in the groupvar onesFormat = ""; if (options.format.indexOf(".") == -1) onesFormat = options.format; else onesFormat = options.format.substring(0, options.format.indexOf(".")); var oneText = new String(ones); var groupLength = 9999; if (onesFormat.lastIndexOf(",") != -1) groupLength = onesFormat.length - onesFormat.lastIndexOf(",") - 1; var groupCount = 0; for (var i = oneText.length - 1; i > -1; i--) { onePortion = oneText.charAt(i) + onePortion; groupCount++; if (groupCount == groupLength && i != 0) { onePortion = group + onePortion; groupCount = 0; } } } returnString = onePortion + returnString; if (number < 0) returnString += neg; if (jQuery(this).is(":input")) jQuery(this).val(returnString); else jQuery(this).text(returnString); } } // end 失去焦点后字符串格式化 }) input.bind("paste", function() { var s = clipboardData.getData(‘text‘); if (!//D/.test(s)); value = s.replace(/^0*/, ‘‘); returnfalse; }) input.bind("dragenter", function() { returnfalse; }) input.bind("keyup", function() { if (input.val() != null && input.val() != ‘‘) { if (input.val().indexOf(".") == -1) { returntrue; } else { var decimalIndex = input.val().indexOf(‘.‘); var decimalPart = input.val().substring(decimalIndex + 1, input.val().length); if (decimalPart.length == len) { decimal_point = true; returnfalse; } elsereturntrue; } } else { decimal_point = false; returnfalse; } }); }); } }); function formatCodes(locale) { // default valuesvar valid = "1234567890.,-"; var dec = "."; var group = ","; var neg = "-"; if (locale == "us" || locale == "cn" || locale == "tw") { valid = "1234567890.,-"; dec = "."; group = ","; } returnnew FormatData(valid, dec, group, neg); }; function FormatData(valid, dec, group, neg) { this.valid = valid; this.dec = dec; this.group = group; this.neg = neg; }; })(jQuery);
原文:http://www.cnblogs.com/hubing/p/3976049.html
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