title: how to send csrf token through ajax call in laravel?
body: <p>i have a form with method=post.In that form i have an image upload field which is ajax.when the ajax call process,verify csrf token mismatch error occure.help me.this is my code..,</p>
  
  <pre><code>&lt;script&gt;
              $(document).ready(function(){
                  $(document).on("click", "#upload", function() {
                      var file_data = $("#groupe_img").prop("files")[0];   // Getting the properties of file from file field
                      var form_data = new FormData();                  // Creating object of FormData class
                      form_data.append("file", file_data)              // Appending parameter named file with properties of file_field to form_data
                      form_data.append("csrftoken",document.mainform.csrftoken.value;)                 // Adding extra parameters to form_data
                      $.ajax({
                                  url: "/upload_avatar",
                                  dataType: 'script',
                                  cache: false,
                                  contentType: false,
                                  processData: false,
                                  data: form_data,                         // Setting the data attribute of ajax with file_data
                                  type: 'post'
                         })
                  })
              });
          &lt;/script&gt;
  </code></pre>
  
  <p>this is my html portion</p>
  
  <pre><code>&lt;input type="file" name="groupe_img" id="groupe_img"&gt;
  &lt;button id="upload" value="Upload"&gt;upload image&lt;/button&gt;
  </code></pre>
  
  <p>tysm</p>