// JavaScript Document //File: hwk1js.js //Author: Jennifer Brister var JB={}; JB.path = "document.lovelyForm.";//to access the elements on the form for shorter code (not used often, though) //Define validation object to perform various form validations //Define an array to hold validations //Customize the array to match the form to validate //0: the form element to validate //1: the validation to run //2: the form element to send the error message to JB.validations = new Array(); JB.validations[0]=["document.lovelyForm.lovelyItems", "isChecked","document.lovelyForm.purchError"];//item checked and qty >=1 JB.validations[1]=["document.lovelyForm.fname", "notBlank","document.lovelyForm.fnameError"];//checks whether the field is blank JB.validations[2]=["document.lovelyForm.lname", "notBlank", "document.lovelyForm.lnameError"]; JB.validations[3]=["document.lovelyForm.address", "notBlank", "document.lovelyForm.addressError"]; JB.validations[4]=["document.lovelyForm.city", "notBlank","document.lovelyForm.cityError"]; JB.validations[5]=["document.lovelyForm.state", "isSelected","document.lovelyForm.stateError"]; JB.validations[6]=["document.lovelyForm.phone", "isNumber","document.lovelyForm.phoneError"];//checks whether the characters in a field are all numbers JB.validations[7]=["document.lovelyForm.email", "validEmail", "document.lovelyForm.emailError"];//checks whether and e-mail address is valid JB.validations[8]=["document.lovelyForm.shipping", "isSelected", "document.lovelyForm.shipError"]; JB.validations[9]=["document.lovelyForm.ccType", "isSelected", "document.lovelyForm.ccTypeError"]; JB.validations[10]=["document.lovelyForm.ccNum", "isValidCC", "document.lovelyForm.ccNumError"];//check whether the characters in a field correspond to a valid credit card //Subtotal Calculation and Submit Buttons Disabled until form validation is true window.onload = function() { document.lovelyForm.calcTot.disabled = true; document.lovelyForm.submitBtn.disable = true; //calcDis.disabled = true; //submitDis = eval(submitDisable); //submitDis.disable = true; } //FUNCTIONS //------------------------ function isEmpty(s){ //checks whether a field is empty or contains whitespaces only if (s == null || s.length == 0) {return true;}//the string is empty return !/\S/.test(s);//string contains at least not a non-whitespace character ==> true means string is empty } //------------------------ function isEmail (field) { //check is field contains a valid e-mail address of the form "string@string" var s = field.value if (isEmpty(s)) { //alert("Please enter a valid email address"); field.className = 'lovelyError'; field.focus(); return false; } if (/[^@]+@+\w+/.test(s)) {return true;} //test string@string field.className = 'lovelyError'; //alert("Please enter valid e-mail address, for example x@y.com"); return false; } //------------------------ function isInteger (field) //validate the only numbers are in the field { var s = field.value; //alert("phone2 is " + s); if (isEmpty(s)) { //alert("Field cannot be empty"); field.className = 'lovelyError'; field.focus(); return false; } if (!(/^-?\d+$/.test(s))) { //alert("Please enter digits only"); field.className = 'lovelyError'; field.focus(); return false; } return true; } //------------------------ function checkBoxSel (field, errorMsg)// Checking if at least one checkbos is selected. { var k, j; var s = "qty"; var flag = false; //alert(field.length); for (k = 0; k 0"); errorMsg.className = 'errorMsgShow'; field.className = 'lovelyError'; sField.focus(); return false; } if (sField.value < 1) { //alert("Please purchase 1 if more of this item"); errorMsg.className = 'errorMsgShow'; field.className = 'lovelyError'; sField.focus(); return false; } if (sField.value >=1) { errorMsg.className = 'errorMsghide'; sField.className = 'lovelyInput'; } } } if (flag == false) { //alert("Please select at least one Lovely Item to purchase"); errorMsg.className = 'errorMsgShow'; field.className = 'lovelyError'; field.focus(); return false; } return flag; } //------------------------ // isSelected function isSelected (field) { if (field.options.selectedIndex == 0) { //alert("Please select an option from the menu"); errorMsg.className = 'errorMsgShow'; field.className = 'lovelyError'; field.focus(); return false; } return true; } /* This script and many more are available free online at The JavaScript Source!! http://javascript.internet.com Created by: David Leppek :: https://www.azcode.com/Mod10 Basically, the alorithum takes each digit, from right to left and muliplies each second digit by two. If the multiple is two-digits long (i.e.: 6 * 2 = 12) the two digits of the multiple are then added together for a new number (1 + 2 = 3). You then add up the string of numbers, both unaltered and new values and get a total sum. This sum is then divided by 10 and the remainder should be zero if it is a valid credit card. Hense the name Mod 10 or Modulus 10. */ function Mod10(ccNumb) { // v2.0 var valid = "0123456789" // Valid digits in a credit card number var len = ccNumb.length; // The length of the submitted cc number var iCCN = parseInt(ccNumb); // integer of ccNumb var sCCN = ccNumb.toString(); // string of ccNumb sCCN = sCCN.replace (/^\s+|\s+$/g,''); // strip spaces var iTotal = 0; // integer total set at zero var bNum = true; // by default assume it is a number var bResult = false; // by default assume it is NOT a valid cc var temp; // temp variable for parsing string var calc; // used for calculation of each digit // Determine if the ccNumb is in fact all numbers for (var j=0; j= 15){ // 15 or 16 for Amex or V/MC for(var i=len;i>0;i--){ // LOOP throught the digits of the card calc = parseInt(iCCN) % 10; // right most digit calc = parseInt(calc); // assure it is an integer iTotal += calc; // running total of the card number as we loop - Do Nothing to first digit i--; // decrement the count - move to the next digit in the card iCCN = iCCN / 10; // subtracts right most digit from ccNumb calc = parseInt(iCCN) % 10 ; // NEXT right most digit calc = calc *2; // multiply the digit by two // Instead of some screwy method of converting 16 to a string and then parsing 1 and 6 and then adding them to make 7, // I use a simple switch statement to change the value of calc2 to 7 if 16 is the multiple. switch(calc){ case 10: calc = 1; break; //5*2=10 & 1+0 = 1 case 12: calc = 3; break; //6*2=12 & 1+2 = 3 case 14: calc = 5; break; //7*2=14 & 1+4 = 5 case 16: calc = 7; break; //8*2=16 & 1+6 = 7 case 18: calc = 9; break; //9*2=18 & 1+8 = 9 default: calc = calc; //4*2= 8 & 8 = 8 -same for all lower numbers } iCCN = iCCN / 10; // subtracts right most digit from ccNum iTotal += calc; // running total of the card number as we loop } // END OF LOOP if ((iTotal%10)==0){ // check to see if the sum Mod 10 is zero bResult = true; // This IS (or could be) a valid credit card number. } else { bResult = false; // This could NOT be a valid credit card number } } } // change alert to on-page display or other indication as needed. if(bResult) { //alert("This IS a valid Credit Card Number!"); } if(!bResult){ //alert("This is NOT a valid Credit Card Number!"); } return bResult; // Return the results } //--------------------------------- function JBvalidate () { var i, check2Make, field /*erField*/; for (i = 0; i