在 WKWebView 中设置键盘类型 -- iOS Swift 4
Set Keyboard type in WKWebView -- iOS Swift 4
如何在 WKWebView 中设置带有地球图标（语言更改选项）的键盘，以便在选择输入字段时在 webview 中始终出现带有地球图标的键盘。
You can configure some keyboard attributes for text input elements.
For example, you can include autocorrect and autocapitalize attributes
in the definition of an input element to specify the keyboard’s
behaviors, as shown in the following example.
<input type="text" size="30" autocorrect="off" autocapitalize="on">
You can also control which type of keyboard is displayed when a user
touches a text field in a web page. To display a telephone keypad, an
email keyboard, or a URL keyboard, use the tel, email, or url keywords
for the type attribute on an input element, respectively. To display a
numeric keyboard, set the value of the pattern attribute to "[0-9]"
or "\d".
These keywords and the pattern attribute are part of HTML 5 and are
available in iOS. The following list shows how to display each type of
keyboard, including the standard keyboard.
Text: <input type="text"></input>
Telephone: <input type="tel"></input>
URL: <input type="url"></input>
Email: <input type="email"></input>
Zip code: <input type="text" pattern="[0-9]*"></input>
如何在 WKWebView 中设置带有地球图标（语言更改选项）的键盘，以便在选择输入字段时在 webview 中始终出现带有地球图标的键盘。
You can configure some keyboard attributes for text input elements. For example, you can include autocorrect and autocapitalize attributes in the definition of an input element to specify the keyboard’s behaviors, as shown in the following example.
<input type="text" size="30" autocorrect="off" autocapitalize="on">
You can also control which type of keyboard is displayed when a user touches a text field in a web page. To display a telephone keypad, an email keyboard, or a URL keyboard, use the tel, email, or url keywords for the type attribute on an input element, respectively. To display a numeric keyboard, set the value of the pattern attribute to "[0-9]" or "\d".
These keywords and the pattern attribute are part of HTML 5 and are available in iOS. The following list shows how to display each type of keyboard, including the standard keyboard.
Text: <input type="text"></input>
Telephone: <input type="tel"></input>
URL: <input type="url"></input>
Email: <input type="email"></input>
Zip code: <input type="text" pattern="[0-9]*"></input>