The message is saved only for 5 minutes.<meta charset="utf-8">
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<title>临时文本库-Temporary Text</title>
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<script>
    
function copyCode(obj){
    //console.log("start select");
    //debugger;
	var copycode=$(obj).prev();
	copycode.select(); // 选择对象
	console.log(copycode.val());
	document.execCommand("Copy"); // 执行浏览器复制命令
	$(obj).after($(".alert"));
	$(".alert").show();
    $('.alert').delay(2000).fadeOut('fast');
}

</script>

    <script>
        document.addEventListener('paste', async (event) => {
            const items = event.clipboardData.items;
            for (const item of items) {
                if (item.type.startsWith('image')) {
                    const file = item.getAsFile();
                    const reader = new FileReader();
                    reader.onload = (e) => {
                        const base64String = e.target.result;
                        document.getElementById('preview').src = base64String;
                        document.getElementById('preview').style.display = 'block';
                        document.getElementsByName('content')[0].value = base64String;
                        document.getElementsByName('content')[0].style.display = 'none';
                        console.log(base64String); // 这里会输出 Base64 编码的字符串
                    };
                    reader.readAsDataURL(file);
                }
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<h6 style='float:right;margin-right:10px;'>
216.73.216.14</h6>


<div class="alert alert-success alert-dismissible" role="alert" hidden="hidden">
  <a href="#" class="alert-link">&#8593;已复制该文本框内容。COPIED</a>
</div>
<form action="./index.php" method="post" style='padding:10px;'>
    <textarea name="content" style='border:1px solid black; padding:10px; width:100%; min-height:20%;'></textarea>
    <img id="preview" style="max-width: 100%; display: none;" />
    <input type="submit" name="submit" value="提交" id="submitButton" class="btn btn-success">
</form>
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    input.type = 'hidden';
    input.name = 'clicked';
    input.value = 'true';
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});
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