OverAssert

gist1.js

function submit(data) {
  
  let errorMessage = '';
  
  if (!data.name) {
    errorMessage = 'please input name';
  } else if (data.lastName && data.lastName.length > 10) {
    errorMessage = 'length of lastName should less than 10 ';
  } else if (data.age < 80) {
    errorMessage = 'age should less than 80';
  } else if (data.experience > 3) {
    errorMessage = 'experience should large than 3';
  }
  ...
  ...
  
  if (errorMessage) {
     //return and show 
  }
  ...
}