重置 HTML 表单中的特定输入元素
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Reset Particular Input Element in a HTML Form
提问by SKR
I have multiple input textboxes in my page. I want to reset particular text box to its onload state if certain conditions fails. I am considering using a Hidden element to store the onload state of the textbox. I would other suggestions or solutions to resolve this issue.
我的页面中有多个输入文本框。如果某些条件失败,我想将特定文本框重置为其加载状态。我正在考虑使用 Hidden 元素来存储文本框的加载状态。我会提出其他建议或解决方案来解决此问题。
回答by bobince
defaultValue:
defaultValue:
<input type="text" value="initial" id="field">
<button id="reset">reset</button>
<script type="text/javascript">
    document.getElementById('reset').onclick= function() {
        var field= document.getElementById('field');
        field.value= field.defaultValue;
    };
</script>
Available on text, passwordand textarea, plus defaultCheckedon checkbox/radioand defaultSelectedon option. Curiously, notavailable on hidden(except in IE, where it's considered a bug).
可用的text,password并且textarea,再加defaultChecked上checkbox/radio与defaultSelected上option。奇怪的是,不可用hidden(除了在 IE 中,它被认为是一个错误)。

