How and where to define form's action in grapesjs

Hello All,

how can i get data from forms in grapesjs. i have droped a form on canvas as u can see that below .

so there is an action property as as mentioned in above snapshot covered by red coloured rectangle. i have put and action value. so where i can define this action in my code in which i can get that form's data .. i am sharing my code

editor = grapesjs.init({
      autorender: 1,
      container: '#gjs',
      components: '<div class="txt-red"></div>',
      style: '.txt-red{color: red}',
      plugins: ['grapesjs-blocks-basic','gjs-preset-webpage' ],
})```

**overall means when i will click on form's send button then where or in which function i will get that form's data or that function where should be defined** 
let me know please