blocks|key|542215|text|driver.find_element_by_id('foo').clear()|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|542216|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>driver.find_element_by_id('foo').clear()
</code></pre>

blocks|key|542323|text|在最新的Selenium版本中，使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|542324|driver.find_element_by_id('foo').clear()|code-block|syntax|javascript|542325|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

In the most recent Selenium version, use:

<pre><code>driver.find_element_by_id('foo').clear()
</code></pre>

blocks|key|542351|text|它是通用语法|type|unstyled|depth|inlineStyleRanges|entityRanges|data|542352|driver.find_element_by_id('Locator+value').clear();
driver.find_element_by_name('Locator+value').clear();|code-block|syntax|javascript|542353|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

It is general syntax

<pre><code>driver.find_element_by_id('Locator value').clear();
driver.find_element_by_name('Locator value').clear();
</code></pre>

blocks|key|542410|text|对于java|type|unstyled|depth|inlineStyleRanges|entityRanges|data|542411|driver.findelement(By.id('foo').clear();|code-block|syntax|javascript|542412|或|542413|webElement.clear();|542414|如果此元素是文本输入元素，则将清除该值。|542415|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

for java 

<pre><code>driver.findelement(By.id('foo').clear();
</code></pre>

or

<pre><code>webElement.clear();
</code></pre>

If this element is a text entry element, this will clear the value.

blocks|key|759029|text|我遇到了一个.clear()不起作用的字段。使用前两个答案的组合适用于该领域。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|759030|from+selenium.webdriver.common.keys+import+Keys

#...your+code+(I+was+using+python+3)

driver.find_element_by_id('foo').send_keys(Keys.CONTROL+%2B+"a")
driver.find_element_by_id('foo').send_keys(Keys.DELETE)|code-block|syntax|javascript|759031|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I ran into a field where .clear() did not work. Using a combination of the first two answers worked for this field.
<pre><code>from selenium.webdriver.common.keys import Keys

#...your code (I was using python 3)

driver.find_element_by_id('foo').send_keys(Keys.CONTROL + &quot;a&quot;)
driver.find_element_by_id('foo').send_keys(Keys.DELETE)
</code></pre>

blocks|key|759086|text|根据我的经验，这被证明是最有效的|type|unstyled|depth|inlineStyleRanges|entityRanges|data|759087|driver.find_element_by_css_selector('foo').send_keys(u'\ue009'+%2B+u'\ue003')|code-block|syntax|javascript|759088|我们发送Ctrl+%2B+Backspace来删除输入中的所有字符，您也可以用delete替换backspace。|759089|编辑:删除键依赖关系|759090|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

In my experience, this turned out to be the most efficient
<pre><code>driver.find_element_by_css_selector('foo').send_keys(u'\ue009' + u'\ue003')
</code></pre>
We are sending Ctrl + Backspace to delete all characters from the input, you can also replace backspace with delete.
EDIT: removed Keys dependency

blocks|key|542542|text|从selenium.webdriver.common.keys导入密钥|type|unstyled|depth|inlineStyleRanges|entityRanges|data|542543|element+=+driver.find_element_by_css_selector('foo')+element.send_keys(Keys.CONTROL+%2B+Keys.BACKSPACE)|542544|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

from selenium.webdriver.common.keys import Keys
element = driver.find_element_by_css_selector('foo')
element.send_keys(Keys.CONTROL + Keys.BACKSPACE)

blocks|key|759201|text|在react中，CTRL%2BA+send_keys解决方案不适用于我。直接在浏览器中测试，CTRL%2BA只是将光标发送到文本元素的开头。相反，对于选择元素中的所有内容，这似乎是可靠的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|759202|preferred_name_field.send_keys(Keys.SHIFT,+Keys.ARROW_UP)
preferred_name_field.send_keys(Keys.DELETE)|code-block|syntax|javascript|759203|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The CTRL+A send_keys solution did not work for me in react. Testing in the browser directly, CTRL+A just sends the cursor to the start of the text element. Instead, this seems to be reliable for selecting all content in the element.
<pre><code>preferred_name_field.send_keys(Keys.SHIFT, Keys.ARROW_UP)
preferred_name_field.send_keys(Keys.DELETE)
</code></pre>

I've got some tests where I'm checking that the proper error message appears when text in certain fields are invalid. One check for validity is that a certain textarea element is not empty.

If this textarea already has text in it, how can I tell selenium to clear the field?

something like:

<pre><code>driver.get_element_by_id('foo').clear_field()
</code></pre>

Clear text from textarea with selenium

我有一些测试，当某些字段中的文本无效时，我会检查是否出现了正确的错误消息。有效性的一种检查是某个文本区域元素不为空。如果这个文本区域中已经有文本，我如何告诉selenium清除这个字段呢？类似于：driver.get_element_by_id('foo').clear_field()

问使用selenium清除文本区域中的文本
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