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File: validate.js

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File: validate.js
Role: Auxiliary data
Content type: text/plain
Description: Validation JS Script used in the example application
Class: OO Mysql Wrapper
MySQL database SQL queries wrapper
Author: By
Last change:
Date: 17 years ago
Size: 2,376 bytes
 

Contents

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/***************************************************************************************************** * Easy Javascript Validation by Daniel Boorn * Copyright 2006, All Rights reserved by Daniel Boorn * Contact: daniel.boorn@gmail.com - wwww.dboorn.com * In any form element add the following form attributes to validate * required ="yes" * validate = { "int", "float", "text", "email" } * message = "Error Message for Element" * Example: <input type="text" validate="int" message="Please enter valid zip code" name="zip"> * * It is required that you add the following to any submit button * onClick="validate(this.form); return document.formSubmit;" ******************************************************************************************************/ function validate(form){ var error = ""; //for each form element for(var i=0; i<form.length; i++){ var element = form[i]; //if required if(element.getAttribute("required") == "yes"){ //if form element if empty if(!valid(element.value,element.getAttribute("validate"),element)) error += element.getAttribute("message") + "\r\n"; } else if(element.getAttribute("validate") != ""){ //if validation is need by not required if(element.value != ""){ if(!valid(element.value,element.getAttribute("validate"),element)) error += element.getAttribute("message") + "\r\n"; } } } if(error != ""){ alert(error); document.formSubmit = false; } else document.formSubmit = true; } function valid(value,type,element){ if(value == "") return false; switch(type){ case "int": if(isNaN(parseInt(value))) return false; break; case "float": if(isNaN(parseFloat(value))) return false; break; case "email": var p = value.indexOf('@'); if(p<1 || p==(value.length-1)) return false; break; case "checked": if(!element.checked) return false; break; default://string break; } return true; } function check_length(maxchars,message,div_id) { var len = message.value.length; if(len > maxchars){ message.value = message.value.substr(0,maxchars); len = maxchars; } document.getElementById(div_id).innerHTML = maxchars - len; }