validate.js

sin波形信号发生起的程序 VHDL语言描述 QUartus

function isEmpty(inputValue) {
    if (inputValue == null || inputValue == "" ) {
        return true
    }
    return false
}

function isNumber(inputValue) {
    var input = parseFloat(inputValue)
    if ( isNaN(input) ) {
        return false
    }
    return true
}

function makeNumber(inputValue) {
    if (isNumber(inputValue) ) {
	return parseFloat(inputValue)
    }
    return 0
}

function isNumberInRange(inputValue, minValue, maxValue) {
    var min = parseFloat(minValue)
    var max = parseFloat(maxValue)
    var input = parseFloat(inputValue)
    if (isNumber(inputValue) && isNumber(minValue) && isNumber(maxValue) ) {
        if (input <= max && input >= min) {
            return true
        }
    }
    return false
}

function isInteger(inputValue) {
    if ( ! isNumber(inputValue) ) {
        return false
    }
    inputStr = inputValue.toString()
    if (inputStr.indexOf(".") != -1 ) {
        return false
    }
    return true
}

function isPosInteger(inputValue) {
    if ( ! isInteger(inputValue) ) {
        return false
    }
    inputStr = inputValue.toString()
    if (inputStr.indexOf("-") == -1 ) {
        return false
    }
    return true
}

function roundNumber(inputValue, decimalPoints) {
    places = parseInt(decimalPoints, 10) + 1
    if ( ! isNumber(inputValue) ) {
        return false
    }
    if (isInteger(inputValue)) {
        return parseInt(inputValue)
    }
    inputStr = inputValue.toString()
    endPoint = (inputStr.indexOf(".") + places)
    resultValue = parseFloat(inputStr.substring(0,endPoint))
    return resultValue
}

function isRoundNumber(inputValue, testValue) {
    inputNum = parseFloat(inputValue)
    testNum = parseFloat(testValue)
    if (isInteger(inputNum/testNum)) {
        return true
    }
    return false
}


function fullyValidInteger(o, fieldName) {
	if (isEmpty(o.value)) {
		var newValue = prompt('Enter a ' + fieldName, '')
		if (! isEmpty(newValue)) {
			o.value = newValue
		}
	}
	if ( ! isNumberInRange(o.value, 1, 9999) ) {
		alert("You must enter a number greater than 0 for the " + fieldName + " field")
		o.focus()
		return false
	}
	if (isInteger(o.value)) {
		o.value = makeNumber(o.value)
		return true
	}
	alert ("You must enter a number for the " + fieldName + " field")
	o.focus()
	return false
}

function areAllTextComplete(form, prompt) {
	for (i=0; i < form.elements.length; i++) {
		fieldValue = form.elements[i].value
		if ( (form.elements[i].type == "text" || form.elements[i].type == "textarea") && isEmpty(fieldValue) ) {
			if (prompt) {
				alert("You must fill in all fields before continuing")
				form.elements[i].focus()
			}
			return false
		}
	}
	return true
}

function validateTextField(o, fieldName) {
	if ( isEmpty(o.value) ) {
		var newValue = prompt('Enter a value for ' + fieldName, '')
		if ( isEmpty(newValue) ) {
			alert("You must enter a value for " + fieldName)
			o.focus()
			return false
		} else {
			o.value = newValue
		}
	}
	return true
}

function areRadiosComplete(form, prompt) {
	var fieldValue
	var radioChecked = false
	for (i=0; i < form.elements.length; i++) {
		if (form.elements[i].type == "radio") {
			radioChecked = false
			var radioSet = eval("form." + form.elements[i].name)
			for (x=0; x < radioSet.length; x++) {
				if (radioSet[x].checked) { radioChecked = true }
			}
			if (!radioChecked) {
				if (prompt) {
					alert("You must select a choice in the '" + form.elements[i].name + "' field")
					radioSet[1].focus()
				}
				return false
			}
		}
	}
	return true
}


function convertMonthToNumber(mm) {
	var monthString = mm
	var returnValue
	if (isNumber(mm)) {
		returnValue = parseInt(mm)
	} else {
		monthString = monthString.substring(0,3)
		monthString = monthString.toUpperCase()
		switch (monthString) {
			case "JAN":
				returnValue = 1
				break
			case "FEB":
				returnValue = 2
				break
			case "MAR":
				returnValue = 3
				break
			case "APR":
				returnValue = 4
				break
			case "MAY":
				returnValue = 5
				break
			case "JUN":
				returnValue = 6
				break
			case "JUL":
				returnValue = 7
				break
			case "AUG":
				returnValue = 8
				break
			case "SEP":
				returnValue = 9
				break
			case "OCT":
				returnValue = 10
				break
			case "NOV":
				returnValue = 11
				break
			case "DEC":
				returnValue = 12
				break
			default:
				returnValue = 0
				break
		}
	}
	return returnValue
}


function isDateValid(dd, mm, yy, fieldName) {
	var ddNo
	var mmNo
	var yyNo
	var leapYear
	var errMsg = null
	if ((dd == null || dd == "") && (mm == null || mm == "") && (yy == null || yy == "")) {
		errMsg = null
	} else if (isNumber(dd) && isNumber(yy)) {
		ddNo = parseInt(dd)
		mmNo = convertMonthToNumber(mm)
		yyNo = parseInt(yy)

		if (!isNumberInRange(yyNo, 1000, 9999)){
			errMsg = "The '" + fieldName + "' year must be of format YYYY"
		} else if (!isNumberInRange(mmNo, 1, 12)) {
			errMsg = "The '" + fieldName + "' month is incorrect"
		} else if (mmNo == 4 || mmNo == 6 || mmNo == 9 || mmNo == 11) {
			if (!isNumberInRange(ddNo, 1, 30)) {
				errMsg = "The '" + fieldName + "' day cannot be greater than 30"
			}

		} else if (mmNo == 2) {
			leapYear = (yyNo % 4 == 0)
			if (leapYear && (yyNo % 100 == 0)) {
				leapYear = (yyNo % 400 == 0)
			}
			if (leapYear) {
				if (!isNumberInRange(ddNo, 1, 29)) {
					errMsg = "The '" + fieldName + "' day cannot be greater than 29"
				}
			} else {
				if (!isNumberInRange(ddNo, 1, 28)) {
					errMsg = "The '" + fieldName + "' day cannot be greater than 28"
				}
			}
		} else {
			if (!isNumberInRange(ddNo, 1, 31)) {
				errMsg = "The '" + fieldName + "' day cannot be greater than 31"
			}
		}
	} else {
		errMsg = "The '" + fieldName + "' format is not correct"
	}
	if (errMsg != null) {
		alert(errMsg)
		return false
	} else {
		return true
	}
}

function createDate(dd, mm, yy) {
	var ddNo
	var mmNo
	var yyNo
	if ( ! isDateValid(dd, mm, yy, "date") ) {
		return false
	}
	ddNo = parseInt(dd)
	mmNo = convertMonthToNumber(mm) - 1
	yyNo = parseInt(yy)
	var aDate = new Date(yyNo, mmNo, ddNo, 0, 0, 0, 0)
	return aDate
}

function isDateInPast(dd, mm, yy) {
	var testDate = createDate(dd, mm, yy)
	var todaysDate = new Date()
	todaysDate.setHours(0)
	todaysDate.setMinutes(0)
	todaysDate.setSeconds(0)
	todaysDate.setMilliseconds(0)

	var testNumber = testDate.getTime()
	var todayNumber = todaysDate.getTime()

	if ( testNumber < todayNumber ) {
		return true
	}
	return false
}

function getCookieData(label) {
	var labelLen = label.length
	var cLen = document.cookie.length
	var i = 0
	var cEnd
	var cookieValue = " "
	while (i < cLen) {
		var j = i + labelLen
		if (document.cookie.substring(i,j) == label) {
			cEnd = document.cookie.indexOf(";", j)
			if (cEnd == -1) {
				cEnd = document.cookie.length
			}
			cookieValue = unescape(document.cookie.substring(j+1, cEnd))
			return cookieValue
		}
		i++
	}
	return " "
}

function setRegionCookie(region) {
	if ( region != "AL" ) {
		setCookie('LastRegion', region, 365);
	}
}

function setCookie(NameOfCookie, value, expiredays)
{
var ExpireDate = new Date ();
ExpireDate.setTime(ExpireDate.getTime() + (expiredays * 24 * 3600 * 1000));
document.cookie = NameOfCookie + "=" + escape(value) +
((expiredays == null) ? "" : "; expires=" + ExpireDate.toGMTString()) +"; path=/";
}

function isTimeValid(time, fieldName) {
	var hours
	var minutes
	var colonInd
	var hoursNo
	var minutesNo
	var errMsg = null
	if (isEmpty(time) ) {
		errMsg = "Please enter a valid " + fieldName
	}
	if (errMsg == null) {
		colonInd	= time.indexOf(":")
		if (colonInd == null || colonInd != 2 || time.length != 5) {
			errMsg = "Please enter a date in the format HH:MM for " + fieldName;
		} else {
			hours = time.substring(0, 2)
			minutes = time.substring(3,5)
			hoursNo = parseInt(hours)
			minutesNo = parseInt(minutes)
			if (!(isInteger(hours) && isNumberInRange(hoursNo, 0, 23))) {
				errMsg = "The hour value for " + fieldName + " must be between 0 and 23";
			}
			if (!(isInteger(minutes) && isNumberInRange(minutesNo, 0, 59))) {
				errMsg = "The minutes value for " + fieldName + " is not valid";
			}
		}
	}
	if (errMsg != null) {
		alert(errMsg)
 		return false
 	}
	return true
}

function earliestTime(time1, time2) {
	if ( !(isTimeValid(time1) && isTimeValid(time2)) ) {
		return -1;
	}
	time1No = (time1.substring(0, 2)) + (time1.substring(3, 5));
	time2No = (time2.substring(0, 2)) + (time2.substring(3, 5));
	if (time1No < time2No) {
		return 1
	}
	if (time2No < time1No) {
		return 2
	} else {
		return 0
	}
}