jquery hide mobile keyboard

In web design on mobile devices, the use of input boxes is an essential part, and the input method on touch-screen mobile phones is mainly realized through soft keyboards. However, in some specific scenarios, the soft keyboard is obviously not needed. For example, in a page that only provides display functions, or when the content of the input box has been pre-filled, there is no need to open the soft keyboard. The keyboard is gone. At this time, we need to use some techniques to achieve the effect of hiding the mobile phone keyboard, and jQuery is an important member of this feast.

1. Conventional methods of hiding the keyboard

To control the display and hiding of the keyboard, we can use some APIs provided by the browser. Common methods include blur() and focus(), which can cause the input box to lose focus and gain focus. Correspondingly, they control the display and hiding of the keyboard.

Taking the blur() method as an example, when the input box is triggered, we can execute the following code to hide the keyboard:

$('input, textarea').on('focus', function() {
    document.activeElement.blur();
});

In this way, the effect of hiding the keyboard can be achieved. However, this method only prevents the input box from getting focus. If you still want to use this input box for input, selection, etc., you have to click the input box again first.

2. jQuery methods

jQuery provides us with some more convenient methods to control the display and hiding of the keyboard. The most commonly used are blur(), focus() and trigger() methods.

1. blur()

Similar to the method provided by the browser, the blur() method will cause the current input box to lose focus. This method can accept a callback function as a parameter. When the input box actually loses focus, this callback function will be triggered.

$('input, textarea').blur(function() {
    // 这里是回调函数
});

2. focus()

Similarly, the focus() method can make the current input box gain focus.

$('input, textarea').focus(function() {
    // 这里是回调函数
});

3. trigger()

jQuery’s trigger() method can simulate specific events and indirectly control the display and hiding of the keyboard in this way.

$('button').click(function() {
    $('input').trigger('blur');
});

In this example, when the button is clicked, the blur event of the input box will be triggered. Therefore, the input box loses focus, hiding the keyboard.

3. Methods to hide the keyboard

Finally, we can combine the above methods to realize the function of hiding the keyboard. The following is a simple example:

// 绑定输入框的获取焦点事件
$('input').focus(function() {
    // 输入框获取到焦点时，立即执行 blur 事件
    $(this).blur();
});

This code is simple, but it prevents the soft keyboard from popping up. When the input box is clicked, the focus event will be triggered, and then we immediately lose focus of the input box, thus hiding the keyboard.

4. Summary

Hiding the soft keyboard is very necessary for mobile device website design in certain situations. This article introduces the method of controlling the display and hiding of the soft keyboard through jQuery for readers' reference. Of course, there are other methods that can also achieve the effect of hiding the soft keyboard. Readers can choose a method that suits them based on the actual situation to achieve this goal.

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