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有没有办法使用 JavaScript 手动重置 onchange 事件？

[英]Is there a way to manually reset the onchange event using JavaScript?

原文 2011-08-24 16:52:58 7 1 javascript/ onchange

Is this possible?这可能吗？ I tried setting selectedIndex but that didn't work.我尝试设置selectedIndex但这不起作用。

What I have is a problem with an onChange event on a touchscreen device.我遇到的是触摸屏设备上的 onChange 事件问题。 The onChange event with a selection from a dropdown works fine the first time, but doesn't seem to reset when I call the form again, even though I reset the form itself.带有从下拉列表中选择的 onChange 事件第一次工作正常，但当我再次调用表单时似乎没有重置，即使我重置了表单本身。

The problem is that the selections on the first dropdown, after the first one, depend on the onChange event calling a function to generate the next select dropdown.问题是第一个下拉列表上的选择，在第一个下拉列表之后，依赖于调用函数的 onChange 事件来生成下一个选择下拉列表。 However, on the device itself, the onChange event doesn't seem to trigger, if the item is re-selected in the first box.但是，在设备本身上，如果在第一个框中重新选择该项目，则 onChange 事件似乎不会触发。 Difficult to understand, but I thought if I could reset the onChange event for that select box element, then the onChange event would fire properly again.难以理解，但我想如果我可以重置该选择框元素的 onChange 事件，那么 onChange 事件将再次正确触发。

1 个解决方案

You want to trigger the onchange handler?您想触发 onchange 处理程序吗？ document.getElementById('yourelement').onchange() . document.getElementById('yourelement').onchange() 。