您可以签出此链接https://codex.wordpress.org/Javascript_Reference/wp.media
jQuery(function($){
// Set all variables to be used in scope
var frame,
metaBox = $(\'#meta-box-id.postbox\'), // Your meta box id here
addImgLink = metaBox.find(\'.upload-custom-img\'),
delImgLink = metaBox.find( \'.delete-custom-img\'),
imgContainer = metaBox.find( \'.custom-img-container\'),
imgIdInput = metaBox.find( \'.custom-img-id\' );
// ADD IMAGE LINK
addImgLink.on( \'click\', function( event ){
event.preventDefault();
// If the media frame already exists, reopen it.
if ( frame ) {
frame.open();
return;
}
// Create a new media frame
frame = wp.media({
title: \'Select or Upload Media Of Your Chosen Persuasion\',
button: {
text: \'Use this media\'
},
multiple: false // Set to true to allow multiple files to be selected
});
// When an image is selected in the media frame...
frame.on( \'select\', function() {
// Get media attachment details from the frame state
var attachment = frame.state().get(\'selection\').first().toJSON();
// Send the attachment URL to our custom image input field.
imgContainer.append( \'<img src="\'+attachment.url+\'" alt="" style="max-width:100%;"/>\' );
// Send the attachment id to our hidden input
imgIdInput.val( attachment.id );
// Hide the add image link
addImgLink.addClass( \'hidden\' );
// Unhide the remove image link
delImgLink.removeClass( \'hidden\' );
});
// Finally, open the modal on click
frame.open();
});
// DELETE IMAGE LINK
delImgLink.on( \'click\', function( event ){
event.preventDefault();
// Clear out the preview image
imgContainer.html( \'\' );
// Un-hide the add image link
addImgLink.removeClass( \'hidden\' );
// Hide the delete image link
delImgLink.addClass( \'hidden\' );
// Delete the image id from the hidden input
imgIdInput.val( \'\' );
});
});