Bagaimana untuk menetapkan textarea read-only_Cara untuk menetapkan textarea read-only-masalah biasa-php.cn

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Bagaimana untuk menetapkan textarea baca sahaja

zbt

Sep 28, 2023 am 11:17 AM

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Anda boleh menggunakan atribut baca sahaja, atribut dilumpuhkan dan tulis baca untuk menetapkan kawasan teks baca sahaja. Pengenalan terperinci: 1. atribut baca sahaja, nilai atribut baca sahaja 2. atribut dilumpuhkan, kandungan elemen kandungan elemen <textarea> </p></blockquote> <p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/202309/28/2023092811013122752.jpg" class="lazy" alt="Bagaimana untuk menetapkan textarea baca sahaja" ></p> <p>Untuk menetapkan elemen <textarea> dalam HTML menjadi baca sahaja, anda boleh menggunakan atribut baca sahaja. Ini ialah sifat boolean dan jika ditetapkan kepada benar, kandungan elemen <textarea> Jika ditetapkan kepada palsu (lalai), kandungan boleh ditukar. </p> <p>Berikut ialah contoh menggunakan atribut baca sahaja untuk menetapkan elemen <textarea> menjadi baca sahaja: </p> <p><textarea readonly="readonly">

Dalam contoh ini, kandungan elemen </p> <p>Selain atribut baca sahaja, terdapat beberapa atribut lain yang boleh digunakan untuk mengawal kebenaran baca dan tulis elemen <textarea> Atribut disable menetapkan elemen <textarea> kepada keadaan dilumpuhkan, menjadikannya mustahil untuk diubah. Atribut readwrite menetapkan elemen <textarea> kepada keadaan boleh dibaca dan boleh ditulis supaya ia boleh diubah. </p> <p>Berikut ialah contoh menggunakan atribut dilumpuhkan untuk menetapkan elemen <textarea> menjadi baca sahaja: </p> <p><textarea disabled="disabled">

Dalam contoh ini, kandungan elemen tidak akan diubah kerana nilai atribut dilumpuhkan (iaitu, benar). Atribut </p> <p>readwrite boleh digunakan untuk menetapkan elemen <textarea> kepada keadaan baca-tulis, seperti yang ditunjukkan di bawah: </p> <p><textarea readwrite="readwrite">

Dalam contoh ini, (iaitu benar).

Ringkasnya, untuk menetapkan elemen dalam HTML sebagai baca sahaja, anda boleh menggunakan atribut baca sahaja. Atribut baca sahaja menetapkan kandungan elemen <textarea> kepada baca sahaja supaya ia tidak boleh diubah. </p><p>Atas ialah kandungan terperinci Bagaimana untuk menetapkan textarea baca sahaja. Untuk maklumat lanjut, sila ikut artikel berkaitan lain di laman web China PHP!</p> </div> </div> <div class="wzconShengming_sp"> <div class="bzsmdiv_sp">Kenyataan Laman Web ini</div> <div>Kandungan artikel ini disumbangkan secara sukarela oleh netizen, dan hak cipta adalah milik pengarang asal. Laman web ini tidak memikul tanggungjawab undang-undang yang sepadan. 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