html文本框元素 [英] html text box element

问题描述

是否可以使用javascript向HTML输入控件添加属性?我想添加一个包含文本框原始内容的属性，以验证它是否已被用户更改.现在，我正在使用隐藏控件，但我想使检查更改更容易.

Is it possible to use javascript to add a property to an HTML input control? I would like to add a property that would contain the original content of the text box to verify if it has been changed by the user. Now I am using a hidden control, but I would like to make it easier to check for a change.

推荐答案

已经有一个属性，其中包含从HTML-defaultValue分配给文本输入和文本区域.

参见 http://www.w3.org/TR/DOM-Level -2-HTML/html.html#ID-26091157 [ ^ ]

There is already an attribute that contains the value that was assigned to text inputs and textareas from the HTML - defaultValue.

See http://www.w3.org/TR/DOM-Level-2-HTML/html.html#ID-26091157[^]

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