我尝试了一些新的表单处理方式，有点相似，但是您不希望显示或隐藏基于其他字段的元素。幸运的是，因为我很懒，要改变它的行为你只需要改变 2 行代码。
它仍然非常基本且未经过适当测试，但您可以在我的网站
http://geuze.name/html5form/html5form.relate.js上找到源代码（更改第 125 和 127 行）
还有一个快速演示以及我在http://geuze.name/html5form/上的 html5form polyfill
即使不完全是您所需要的，代码也可能只是帮助您朝着正确的方向思考。
编辑
添加代码，因为明显的懒惰服务器；）
/*
* Form Relationship Plugin - jQuery plugin
* Version 0.2
*
* Built for the jQuery library
* http://jquery.com
*
* Plugin allows you to easily add smart relations between form fields and other elements
*
*
*/
(function($){
$.fn.relate = function(options){
// Uncomment string below during testing
"use strict";
var tmp = {},
// Default configuration properties
defaults = {
scoreRequired: 1,
scoreOnTrue: 1,
scoreOnFalse: 0,
globalScope: true,
debug: false
},
callbacks = {
oninitialize: function(){},// Runs once per form
onfinish: function(){}// Runs once after no errors
},
opts = $.extend(
{},
defaults,
callbacks,
options
);
// Force debug false on sucky browsers
if(typeof(console) === 'undefined' || typeof(console.info) === 'undefined'){
opts.debug = false;
}
// Our debug output
function debug(str){
if(opts.debug === true){
console.info(str);
}
};
// Helper function to determine object size
function objSize(obj) {
var size = 0, key;
for (key in obj) {
if (obj.hasOwnProperty(key)) size++;
}
return size;
};
// Update per element
// Easier would be to always loop over everything, but I assume this is faster
function update(form){
var related,
currentScore = 0,
scoreOnTrue = 1,
scoreOnFalse = 0;
// Reset score
$('[data-currentscore]').removeAttr('data-currentscore');
// Loop all possible smart elements
$('select[data-relate], select:has(option[data-relate]), input[data-relate], textarea[data-relate]', form).each(function(){
if($(this).is('select')){
$('option', this).each(function(){
// Find relation
related = $(this).attr('data-relate');
// If no relation, no points to anything
if(!related || related.length 0 ? $(this).attr('data-scoreontrue') * 1 : opts.scoreOnTrue;
scoreOnFalse = $(this).filter('[data-scoreonfalse]').length > 0 ? $(this).attr('data-scoreonfalse') * 1 : opts.scoreOnFalse;
if($(this).is(':selected')){
$(related).each(function(){
currentScore = $(this).filter('[data-currentscore]').length > 0 ? $(this).attr('data-currentscore') * 1 : 0;
$(this).attr('data-currentscore', currentScore + scoreOnTrue);
});
} else {
$(related).each(function(){
currentScore = $(this).filter('[data-currentscore]').length > 0 ? $(this).attr('data-currentscore') * 1 : 0;
$(this).attr('data-currentscore', currentScore - scoreOnFalse);
});
}
});
} else {
// Find relation
related = $(this).attr('data-relate');
// If no relation, no points to anything
if(!related ||related.length 0 ? $(this).attr('data-scoreontrue') * 1 : opts.scoreOnTrue;
scoreOnFalse = $(this).filter('[data-scoreonfalse]').length > 0 ? $(this).attr('data-scoreonfalse') * 1 : opts.scoreOnFalse;
if($(this).is('input:radio') || $(this).is('input:checkbox')){
if($(this).is(':checked')){
$(related).each(function(){
currentScore = $(this).filter('[data-currentscore]').length > 0 ? $(this).attr('data-currentscore') * 1 : 0;
$(this).attr('data-currentscore', currentScore + scoreOnTrue);
});
} else {
$(related).each(function(){
currentScore = $(this).filter('[data-currentscore]').length > 0 ? $(this).attr('data-currentscore') * 1 : 0;
$(this).attr('data-currentscore', currentScore + scoreOnFalse);
});
}
} else if($(this).val() !== '' && $(this).val() != $(this).attr('placeholder')){
$(related).each(function(){
currentScore = $(this).filter('[data-currentscore]').length > 0 ? $(this).attr('data-currentscore') * 1 : 0;
$(this).attr('data-currentscore', currentScore + scoreOnTrue);
});
} else {
$(related).each(function(){
currentScore = $(this).filter('[data-currentscore]').length > 0 ? $(this).attr('data-currentscore') * 1 : 0;
$(this).attr('data-currentscore', currentScore + scoreOnFalse);
});
}
}
});
// Finaly loop over all fields with some sort of score
$('[data-currentscore]').each(function(){
var scoreRequired = $(this).has('[data-scorerequired]') ? $(this).attr('data-scorerequired') * 1 : opts.scoreRequired;
if($(this).attr('data-currentscore') * 1 >= scoreRequired * 1){
$(this).show();
} else {
$(this).hide();
}
});
};
// Loop over all forms requested
this.each(function(){
// Private properties
var form = $(this);
// Init / change / keyup(fixes some browsers on select)
update(form);
$('select[data-relate], select:has(option[data-relate]), input[data-relate], textarea[data-relate]')
.change(function(){
update(form);
}).keyup(function(){
update(form);
});
});
return this;
}
})(jQuery);
用法如下：
$('form').relate({...});和一些html数据属性