Javascript 填充输入文本
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fill input text
提问by Jean
How can I fill a text input with a value? I am trying this:
如何使用值填充文本输入？我正在尝试这个：
<input id="curso" maxlength="150" name="curso" size="40" type="text"
value="window.location.href.substring(91))" />
But that does not work.
但这不起作用。
回答by Mike Samuel
<input id="curso" maxlength="150" name="curso" size="40" type="text">
<script>
document.getElementById("curso").value =
document.getElementById("curso").defaultValue = window.location.href.substring(91);
</script>
You can't execute JavaScript from within an arbitrary HTML attribute. Only <script>elements and event handlers can contain JavaScript, so add a <script>that sets the value.
您无法从任意 HTML 属性中执行 JavaScript。只有<script>元素和事件处理程序可以包含 JavaScript，因此添加<script>设置值的 。
You also need to set the defaultValueproperty so that any form resetresets the value to the desired value.
您还需要设置该defaultValue属性，以便任何表单重置都会将该值重置为所需的值。
