次の検証コードを簡素化/短縮するのに助けが必要です。助けていただければ幸いです。現時点では、テキストが多すぎます。先生は、もっと簡単に/きれいにできると言いました... 本当に行き詰まっています。
ありがとうございました。
window.addEventListener('load',init,false);
function init(){
var submit = document.getElementById("submit");
var gender = document.getElementById("gender");
var age = document.getElementById("age");
var length = document.getElementById("length");
var weight = document.getElementById("weight");
var duration = document.getElementById("duration");
var time = document.getElementById("time");
submit.addEventListener('click', validation, false);
gender.addEventListener('checked',validategender,false);
age.addEventListener('blur', validateage, false);
length.addEventListener('blur',validatelength,false);
weight.addEventListener('blur',validateweight,false);
duration.addEventListener('blur',validateduration,false);
time.addEventListener('checked',validatetime,false);
}
function validategender(){
var man = document.getElementById("man");
var vrouw = document.getElementById("vrouw");
var genderfout = document.getElementById("genderFout");
if(man.checked != true && vrouw.checked !=true){
genderfout.innerHTML = "Please choose a gender";
return false;
}else {
genderfout.innerHTML = "";
}return true;
}
function validateage() {
var age = parseInt(document.getElementById("age").value, 10);
var ageFout = document.getElementById("ageFout");
if (isNaN(age) || age < 0 || age > 130) {
ageFout.innerHTML = "Please enter a valid age";
return false;
} else {
ageFout.innerHTML = "";
}
return true;
}
function validateweight() {
var weight = parseInt(document.getElementById("weight").value, 10);
var weightFout = document.getElementById("weightFout");
if (isNaN(weight) || weight < 30 || weight > 200) {
weightFout.innerHTML = "Please enter a valid weight";
return false;
} else {
weightFout.innerHTML = "";
}
return true;
}
function validatelength() {
var length = parseInt(document.getElementById("length").value, 10);
var lengthFout = document.getElementById("lengthFout");
if (isNaN(length) || length < 50 || length > 220) {
lengthFout.innerHTML = "Please enter a valid length";
return false;
} else {
lengthFout.innerHTML = "";
}
return true;
}
function validateduration() {
var duration = parseInt(document.getElementById("duration").value, 10);
var durationFout = document.getElementById("durationFout");
if (isNaN(duration) || duration < 0) {
durationFout.innerHTML = "Please enter a valid time-duration";
return false;
} else {
durationFout.innerHTML = "";
}
return true;
}
function validatetime(){
var minutes = document.getElementById("minutes");
var hours = document.getElementById("hours");
var timeFout = document.getElementById("timeFout");
if(minuten.checked !=true && uur.checked !=true){
timeFout.innerHTML = "choose a time unit!";
return false;
}else {
timeFout.innerHTML = "";
}
return true;
}
function validation(e){
var genderOk = validategender();
var ageOk = validateage();
var weightOk = validateweight();
var lengthOk = validatelength();
var durationOk = validateduration();
var timeOk = validatetime();
if (!genderOk || !ageOk || !weightOk || !lengthOk || !durationOk || !timeOk){
e.preventDefault();
}
}