让我们检查一下 datepicker _findPos 函数
$.datepicker._findPos = function (obj) {
var position,
inst = this._getInst(obj),
isRTL = this._get(inst, "isRTL");
while (obj && (obj.type === "hidden" || obj.nodeType !== 1 || $.expr.filters.visible(obj))) {
obj = obj[isRTL ? "previousSibling" : "nextSibling"];
}
position = $(obj).offset();
/*because position of invisible element is null, js will break on next line*/
return [position.left, position.top];
};
如果 datepicker 的目标 obj 是不可见的,它将使用不可见的最近的兄弟位置
有几种解决方案:</p>
解决方案 1
由于 LTR,您可以交换两个元素的位置
<tr>
<td>
<input type="hidden" class="end_date" />
<small class="date_target">until <span>Dec. 31, 2013</span></small>
</td>
</tr>
解决方案 2
在隐藏元素旁边添加一个可见元素,这样 datepicker 就会找到可见元素的位置
<tr>
<td>
<small class="date_target">until <span>Dec. 31, 2013</span></small>
<input type="hidden" class="end_date" /><span> </span>
</td>
</tr>
解决方案 3
重新定义_findPos函数,让你可以随意设置日历的位置
$.datepicker._findPos = function (obj) {
var position,
inst = this._getInst(obj),
isRTL = this._get(inst, "isRTL");
while (obj && (obj.type === "hidden" || obj.nodeType !== 1 || $.expr.filters.visible(obj))) {
obj = obj[isRTL ? "previousSibling" : "nextSibling"];
}
position = $(obj).offset();
// if element type isn't hidden, use show and hide to find offset
if (!position) { position = $(obj).show().offset(); $(obj).hide();}
// or set position manually
if (!position) position = {left: 999, top:999};
return [position.left, position.top];
};