我有一个无线电输入组.如果检查了收音机,我再次点击它就会取消选中.
有没有办法获得收音机onClick事件的先前状态？
<input name="options" type="radio" onClick="resetMeIfChecked()"> <input name="options" type="radio" onClick="resetMeIfChecked()"> <input name="options" type="radio" onClick="resetMeIfChecked()">
解决方法
jQuery版
// bind to retrieve old status
$('input[type="radio"]').mousedown(function() {
// if it was checked before
if(this.checked) {
// bind event to reset state after click is completed
$(this).mouseup(function() {
// bind param,because "this" will point somewhere else in setTimeout
var radio = this;
// apparently if you do it immediatelly,it will be overriden,hence wait a tiny bit
setTimeout(function() {
radio.checked = false;
},5);
// don't handle mouseup anymore unless bound again
$(this).unbind('mouseup');
});
}
});
但同样,这并不是如何使用单选按钮.我认为你可以更好地设置一个复选框,你可以取消选中当前点击的所有其他复选框(因此总是最多选择1个)
