如何使用 JS 或 TS 在 Cypress 中从.then 返回文本值

Question

I need to access data outside from then.

   function getText() {
    cy.get('#locator')
        .then(function($elem) {
            let aaa = cy.log($elem.text());
            return aaa.toString();
        });
   }

   var returnedValue = getText();
   cy.log(returnedValue);

I get the error: Argument of type 'void' is not assignable to parameter of type 'string' , when I try to print the output in the Cypress test runner log.

Answer 1

1. Your getText() does not return anything, hence the argument of type void... error.
2. You're trying to convert a cy.log() command into a string, which is not feasible.

Instead, let's yield the result of your getText() command into a .then() that uses cy.log() ;

const getText = () => {
  return cy // return the entire chain
    .get('#locator')
    .then(($elem) => {
       return $elem.text(); // return the text of the element
    });
}

getText().then((result) => {
  cy.log(result);
});

If you need to do something besides cy.log() that value, just do the same, and use that result variable.

getText().then((result) => {
  // code that uses result
});

I would not advise declaring a variable and setting it equal to getText() , because that is going to assign the variable a value of type Chainable<string> , and not string , which is not what you want or need.