前端基础JS——input输入框的oninput事件和onchange事件

onchange——input输入过程中不会触发,失去焦点时才会触发;

兼容性:所有浏览器都支持,可以用于<input>, <select>, 和 <textarea>元素。

oninput——在用户输入时触发,它是在元素值发生变化时立即触发;实时触发

缺陷:从脚本中修改值不会触发事件。从浏览器下拉提示框里选取值时不会触发。IE9 以下不支持,所以IE9以下可用onpropertychange 事件代替。
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