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multi-step-form.js
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multi-step-form.js
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(function(multiStepForm, $, undefined ) {
var eventHandlers = {
"nextStep" : [],
"prevStep" : [],
"submit" : []
};
var $currentStep;
var $container;
//public methods
multiStepForm.init = function(selector){
if(selector == null) selector = ".multi-step-form";
$container = $(selector);
$currentStep = $container.children().first();
showStep();
};
multiStepForm.addHandler = function(evt, fnc){
if(typeof fnc === "function"){
eventHandlers[evt].push(fnc);
return true;
}
throw "cannot bind non-function handler";
};
multiStepForm.addNextBtns = function(selector){
$(selector).click(function() {
multiStepForm.next();
});
};
multiStepForm.addPrevBtns = function(selector){
$(selector).click(function() {
multiStepForm.prev();
});
};
multiStepForm.next = function(){
if(submit()){
nextStep();
}
};
multiStepForm.prev = function(){
prevStep();
};
multiStepForm.goToStep = function(step, submit){
if(submit === true) submit();
$currentStep = $container.children().eq(step-1);
showStep();
};
multiStepForm.getCurrentStep = function(){
return $currentStep;
};
//private methods
function callHandlers(evt){
var handlers = eventHandlers[evt];
if(handlers.length === 0) return;
for(var i = 0; i < handlers.length; i ++){
handlers[i]();
}
}
function showStep(){
$currentStep.show();
$container.children().not($currentStep).hide();
}
//events
function nextStep(){
if(callHandlers("nextStep") === false) return;
$currentStep = $currentStep.next();
showStep();
}
function prevStep(){
if(callHandlers("prevStep") === false) return;
$currentStep = $currentStep.prev();
showStep();
}
function submit(){
if(callHandlers("submit") === false) return;
if($currentStep.is("form")) {
$forms = $currentStep;
} else {
$forms = $("form", $currentStep);
}
var success = false;
$forms.each(function(index, element){
if(!element.checkValidity()) {
element.reportValidity();
return;
}
$.ajax({
type: 'post',
url: $(element).attr('action'),
data: $(element).serialize(),
async: false,
success: function () {
console.log('multi-step-form.js - form was submitted');
success = true;
},
error: function () {
console.log('multi-step-form.js - form failed to submit');
success = false;
}
});
});
return success;
}
//IE and Safari Support for reportValidity()
if (!HTMLFormElement.prototype.reportValidity) {
HTMLFormElement.prototype.reportValidity = function() {
if (this.checkValidity()) return true;
var btn = document.createElement('button');
this.appendChild(btn);
btn.click();
this.removeChild(btn);
return false;
}
}
}( window.multiStepForm = window.multiStepForm || {}, jQuery ));