1.概述
在项目中经常遇到列表中对复选框进行勾选操作，全选。。。反选。。
2. example
<html>
<body>
<form id="test-form" action="test">
<legend>请选择想要学习的编程语言：</legend>
<fieldset>
<p><label class="selectAll"><input type="checkbox"> <span class="selectAll">全选</span><span class="deselectAll">全不选</span></label> <a href="#0" class="invertSelect">反选</a></p>
<p><label><input type="checkbox" name="lang" value="javascript"> JavaScript</label></p>
<p><label><input type="checkbox" name="lang" value="python"> Python</label></p>
<p><label><input type="checkbox" name="lang" value="ruby"> Ruby</label></p>
<p><label><input type="checkbox" name="lang" value="haskell"> Haskell</label></p>
<p><label><input type="checkbox" name="lang" value="scheme"> Scheme</label></p>
<p><button type="submit">Submit</button></p>
</fieldset>
</form>
<script src="jquery-3.1.0.js"></script>
<script type="text/javascript">
$(function(){
(function(){
var
form = $('#test-form'),
langs = form.find('[name=lang]'),
selectAll = form.find('label.selectAll :checkbox'),
selectAllLabel = form.find('label.selectAll span.selectAll'),
deselectAllLabel = form.find('label.selectAll span.deselectAll'),
invertSelect = form.find('a.invertSelect');
// 重置初始化状态:
form.find('*').show().off();
form.find(':checkbox').prop('checked', false).off();
deselectAllLabel.hide();
// 拦截form提交事件:
form.off().submit(function (e) {
e.preventDefault();
alert(form.serialize());
});
var count = 1; //点击全选/全不选框次数
selectAll.click(function(){
if(count++ %2){
selectAllLabel.hide();
deselectAllLabel.show();
$(this).prop("checked", false);
langs.prop("checked", true);
}else {
selectAllLabel.show();
deselectAllLabel.hide();
$(this).prop("checked", false);
langs.prop("checked", false);
}
});
invertSelect.on('click', function(){
langs.map(function(){
$(this).prop('checked', !this.checked);
});
});
})();
});
</script>
</body>
</html>