代码是基于jquery的
var intervalEvent = null;
$("#join_input_jia,#join_input_jian").on({
touchstart: function(e){
e.preventDefault();
var type = 1;
if($(this).attr('id') == 'join_input_jian'){
type = 2;
}
if(!isNull(intervalEvent)){
window.clearInterval(intervalEvent);
}
intervalEvent = setInterval("countChange(" + type + ")", 100);
},
touchmove: function(e){
window.clearInterval(intervalEvent);
},
touchend: function(e){
window.clearInterval(intervalEvent);
}
});
function countChange(type){
var _userBuyCount = $("#join_count").val();
if(type === 1){
if (parseInt(_userBuyCount) >= availablecount) {
toast("最多只能参与" + availablecount + "人次");
window.clearInterval(intervalEvent);
return;
}
//对全局的userBuyCount赋值
userBuyCount = _userBuyCount;
$("#join_count").val(parseInt(_userBuyCount) + purchasespanFromPostData);
}else if(type === 2){
if (parseInt(_userBuyCount) <= purchasespanFromPostData) {
window.clearInterval(intervalEvent);
return;
}
//对全局的userBuyCount赋值
userBuyCount = _userBuyCount;
$("#join_count").val(parseInt(_userBuyCount) - purchasespanFromPostData);
}
};
我想实现的效果是按住按钮join_input_jia,输入框的值一直递增,join_input_jian则一直递减, 现在这段代码是实际运行中改来改去都不行,是不是还要加按住的时间判断之类的,求思路