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HomeBackend DevelopmentPHP TutorialFile upload without refreshing Spokesperson appointment documents News Network draft documents Document No. 1 press release

No refresh file upload

ajax’s FormData object completes no refresh operation

ajax level 2 standard can operate on files, but only supports new browsers (not compatible with lower versions of IE), and is H5 standard

Notes:

  1. Form size

    File upload without refreshing Spokesperson appointment documents News Network draft documents Document No. 1 press release

  2. Single file upload size

    File upload without refreshing Spokesperson appointment documents News Network draft documents Document No. 1 press release

    Practical operation:

  3. Write a form, but it should be noted that the enctype attribute is not set for the form.

    File upload without refreshing Spokesperson appointment documents News Network draft documents Document No. 1 press release

  4. Bind a click event to the upload button and complete the ajax submission of the uploaded file

    File upload without refreshing Spokesperson appointment documents News Network draft documents Document No. 1 press release

  5. Use FormData to collect data in the form (normal data + upload domain)

    File upload without refreshing Spokesperson appointment documents News Network draft documents Document No. 1 press release

  6. Use the onprogress handle of the upload member of the ajax object to monitor the file upload situation

    1. Set an upload progress bar display box

    File upload without refreshing Spokesperson appointment documents News Network draft documents Document No. 1 press release

    b) css settings

    File upload without refreshing Spokesperson appointment documents News Network draft documents Document No. 1 press release

    File upload without refreshing Spokesperson appointment documents News Network draft documents Document No. 1 press release

    c) Set up monitoring file upload events

    File upload without refreshing Spokesperson appointment documents News Network draft documents Document No. 1 press release

  7. To monitor ajax operations through onreadystatechange

    File upload without refreshing Spokesperson appointment documents News Network draft documents Document No. 1 press release

  8. Send an ajax request (Note: You do not need to set the ajax request header when using FormData to complete data upload)

    File upload without refreshing Spokesperson appointment documents News Network draft documents Document No. 1 press release

  9. Use the event source (uploaded file) in onprogress to display progress

    File upload without refreshing Spokesperson appointment documents News Network draft documents Document No. 1 press release

  10. The server data.php file implements uploaded file processing

    File upload without refreshing Spokesperson appointment documents News Network draft documents Document No. 1 press release

    iframe enables refresh-free uploading

  11. Create an index.php file and set the upload domain

    File upload without refreshing Spokesperson appointment documents News Network draft documents Document No. 1 press release

    File upload without refreshing Spokesperson appointment documents News Network draft documents Document No. 1 press release

    Technical point 1: You need to set the window opened for form submission to an iframe defined by yourself

    Technical point 2: The generated image needs to be processed in the data.php file, and then the image URL address is returned. Use top to get the window to open the current iframe, and modify the src attribute of the img tag.

    2. data.php completes saving and returning images

    File upload without refreshing Spokesperson appointment documents News Network draft documents Document No. 1 press release

The above introduces file upload without refreshing, including file upload and new article content. I hope it will be helpful to friends who are interested in PHP tutorials.

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