How to prohibit the use of Chinese input method in the scan code search box?

Scan the QR code to search box: How to optimize the experience of Chinese input method?

When developing a scan code search box, how to improve the user experience under different input methods is a key issue. The candidate word display mechanism of the Chinese input method is quite different from that of the English input method, which may affect user efficiency. This article discusses how to optimize this experience rather than simply and roughly prohibiting Chinese input methods.

Directly banning Chinese input methods may lead to poor user experience. A more effective way is to guide the user or optimize the input process.

One way is to take advantage of HTML5's inputmode property. For example, inputmode="latin" recommends using the Latin letter input method (i.e., the English input method). However, it should be noted that this is not a mandatory measure, and users can still choose other input methods.

The sample code is as follows:

<input type="text" id="searchInput" inputmode="latin">

For more fine control, JavaScript can be used to detect input content, and give prompts or perform corresponding processing when entering non-English characters. For example:

 document.getElementById('searchInput').addEventListener('input', function(e) {
    let input = e.target.value;
    if (!/^[a-zA-Z0-9]*$/.test(input)) {
        // Optional: e.target.value = ''; // Clear the input box alert ('It is recommended to use English or digital input'); // Friendly prompt}
});

While prompting the user, this method avoids directly clearing the input box and maintains a better user experience.

The final solution should weigh user experience and functional requirements. Completely banning Chinese input methods is not the best choice. Through inputmode attribute and JavaScript input detection, users can be guided and input processes can be optimized to improve the overall user experience. This is more friendly than forcing the input method to prohibit it and is more in line with practical application scenarios.

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