Question

这是我上传的代码。我不确定在选择文件后在何处/如何包含jquery代码以启用按钮。我试过复制示例并对其进行测试，但我仍然无法使其工作。

HTML

<div id="floatLeft">   
<label for="fileToUpload">Select CSV file to Upload:</label>
<input type="file" name="fileToUpload" id="fileToUpload">
</div>
<div id="floatRight">
<input type="submit" value="Generate" name="submit" disabled />

</div>

JQUERY

$(document).ready(
function(){
    $('input:file').change(
        function(){
            if ($(this).val()) {
                $('input:submit').attr('disabled',false);
                // or, as has been pointed out elsewhere:
                // $('input:submit').removeAttr('disabled'); 
            } 
        }
        );
});

Answer 1

您的代码似乎有效。确保你有：

<script src="//code.jquery.com/jquery-1.11.3.min.js"></script>

在你的head标签内，你的JQuery在脚本标签内。

Answer 2

以前的答案对于较小的文件上传看起来很糟糕，因为 #Staging Storage Resource Group Name $stageSAN = Get-AzResource -Name $stagestorageaccountname -ResourceType "Microsoft.Storage/storageAccounts" $stagestorageaccountnameRG = $stageSAN.ResourceGroupName #Restoring the Backup to Storage $Restore = Restore-AzRecoveryServicesBackupItem -RecoveryPoint $RP[0] -StorageAccountName $stagestorageaccountname -StorageAccountResourceGroupName $stagestorageaccountnameRG -TargetResourceGroupName $TargetVMRGName #Restore Job Status $restorejob = Get-AzRecoveryServicesBackupJob -Job $Restore -VaultId $VMRSVVaultID if ($restorejob.Status -like "InProgress" ) { do { $CheckStatus = Get-AzRecoveryServicesBackupJob -Job $Restore -VaultId $VMRSVVaultID $restorejob = $CheckStatus start-sleep -Seconds 4 } until ($restorejob.Status -like "Completed" ) } else { Write-Output "Restore Job Failed" } # Fetching Job Details $details = Get-AzRecoveryServicesBackupJobDetails -Job $restorejob -VaultId $VMRSVVaultID $properties = $details.properties #$storageAccountName = $properties.'Target Storage Account Name' $containerName = $properties["Config Blob Container Name"] $templateBlobURI = $properties["Template Blob Uri"] Write-Output $templateBlobURI $BlobURI = $templateBlobURI -Split '/' $Blob = $BlobURI[4] #Setting Storage Account Context Set-AzCurrentStorageAccount -Name $stagestorageaccountname -ResourceGroupName $VMRGname #Building the Temaplate URI for deploying the server $templateBlobFullURI = New-AzStorageBlobSASToken -Container $containerName -Blob $Blob -Permission r -FullUri #Deplaying the Azure VM from Backup New-AzResourceGroupDeployment -ResourceGroupName $TargetVMRGName -TemplateUri $templateBlobFullURI -VirtualMachineName $NewVirtualMachineName 将在不等待上传结束的情况下被触发。

对于异步上传，https://api.jquery.com/ajaxcomplete/ 非常有用。

这段来自 Drupal 世界的代码完成了这项工作：

.change

});

在php上传期间未选择文件时禁用提交按钮

2 个答案: