js验证总结
js文件
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//测试输入框的值是否整数function checkNum(inputObj) { var regex = /^/d*$/; return regex.test(inputObj.value);}//测试输入框的值的个数function checkLength(inputObj, maxLength) { return inputObj.value.length <= maxLength;}//将字符串的首尾空格全部去掉String.prototype.Trim = function() { return this.replace(/(^/s*)|(/s*$)/g, "");}//测试输入框是否空值.valuefunction checkInputValueIsEmpty(inputObj) { var s = inputObj.value.Trim(); if (s == null || s == "") { return false; } else { return true; }}//判断一个控件的值是否为空function checkValueIsEmpty(inputValue) { var strValue = inputValue.Trim(); if (strValue == null || strValue == "") { return true; } else { return false; }}//验证最大长度指定的正小数,inputObj为input对象，beforeLength为小数点前面的位数个数，afterLength为小数点后面的位数个数function checkNumberLength(inputObj, beforeLength, afterLength) { if (inputObj.value.indexOf(".") >= 0) { var regex = new RegExp("^//d{0," + beforeLength + "}[.]?//d{0," + afterLength + "}$"); return regex.test(inputObj.value); } else { var regex = new RegExp("^//d{0," + beforeLength + "}$"); return regex.test(inputObj.value); }}//验证最大长度指定的正负小数,inputObj为input对象，beforeLength为小数点前面的位数个数，afterLength为小数点后面的位数个数function checkAllNumberLength(inputObj, beforeLength, afterLength) { if (inputObj.value.indexOf(".") >= 0) { var regex = new RegExp("^-?//d{0," + beforeLength + "}[.]?//d{0," + afterLength + "}$"); return regex.test(inputObj.value); } else { var regex = new RegExp("^-?//d{0," + beforeLength + "}$"); return regex.test(inputObj.value); }}//验证最大长度指定的正负小数valuefunction checkAllNumberLengthByValue(inputValue, beforeLength, afterLength) { if (inputValue.indexOf(".") >= 0) { var regex = new RegExp("^-?//d{0," + beforeLength + "}[.]?//d{0," + afterLength + "}$"); return regex.test(inputValue); } else { var regex = new RegExp("^-?//d{0," + beforeLength + "}$"); return regex.test(inputValue); }}//测试输入框的值是否带小数function checkNumber(inputObj) { var regex = /^([0-9]*)([.]?)([0-9]*)$/; return regex.test(inputObj.value);}//测试输入框的值是否小数function checkAllNumber(inputObj) { var regex = /^-?([0-9]*)([.]?)([0-9]*)$/; return regex.test(inputObj.value);}//测试身份证验证function checkIDnumber(inputObj) { var regex = /(^/d{15}$)|(^/d{17}([0-9]|X)$)/; return regex.test(inputObj.value);}//测试身份证验证function checkemail(inputObj) { var regex = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(.[a-zA-Z0-9_-])+/; return regex.test(inputObj.value);}function KeyPress(inputObj) {//只允许录入数据字符 0-9 和小数点 var txtval = inputObj.value; var key = event.keyCode; if ((key < 48 || key > 57) && key != 46) { event.returnValue = false; } else if (key == 46) { if (txtval.indexOf(".") != -1 || txtval.length == 0) event.returnValue = false; }}function KeyPressAllNumber(inputObj) {//只允许录入所有小数 var txtval = inputObj.value; var key = event.keyCode; if ((key < 48 || key > 57) && key != 46 && key != 45) { event.returnValue = false; } else if (key == 46) { if (txtval.indexOf(".") != -1 || txtval.length == 0) event.returnValue = false; } else if (key == 45) { if (txtval.indexOf("-") != -1) event.returnValue = false; }}//输入整数function KeyPressNum(objTR) {//只允许录入数据字符 0-9 //var objTR = element.document.activeElement; var txtval = objTR.value; var key = event.keyCode; if (key < 48 || key > 57) { event.keyCode = 0; }}function checkInputValueIsEmptyOrOverLength(inputObj, inputLength, inputField) { if (!checkInputValueIsEmpty(inputObj)) { alert(inputField + "不能为空！"); return false; } if (!checkLength(inputObj, inputLength)) { alert(inputField + "输入值超出最大长度！"); return false; } return true;}//将inputObj的文本全角转半角function DBC2SBC(inputObj) { var result = ""; for (var i = 0; i < inputObj.value.length; i++) { code = inputObj.value.charCodeAt(i); //获取当前字符的unicode编码 if (code >= 65281 && code <= 65373)//在这个unicode编码范围中的是所有的英文字母已及各种字符 { result += String.fromCharCode(inputObj.value.charCodeAt(i) - 65248); //把全角字符的unicode编码转换为对应半角字符的unicode码 } else if (code == 12288)//空格 { result += String.fromCharCode(inputObj.value.charCodeAt(i) - 12288 + 32); } else { result += inputObj.value.charAt(i); } } inputObj.value = result;}//判断输入的中英文function checkByteLength(inputObj) { var byteLen = 0, len = inputObj.value.length; if (inputObj.value) { for (var i = 0; i < len; i++) { if (inputObj.value.charCodeAt(i) > 255) {//一字节有8位2进制数，从0开始，2的8次方就是255；如果大于255,就表示占用了2个字节 byteLen += 2; } else { byteLen++; } } return byteLen; } else { return 0; }}?