How to get the value from if else-CodePudding

Hello, everyone!
How do I get the result from the block?

  if (result.valid) {
    const test = result.length_valid 
  } else {
    console.log('...');
  }
console.log(test)

CodePudding user response：

var test;
if (result.valid) {
    test = result.length_valid;
} else {
    console.log('...');
}
console.log(test)

CodePudding user response：

I think you should first check whether result.valid is true or false. Then, you should define "test" variable using let or var outside the "if" block. Variables declared/defined using const and let keywords are block-scoped and you can't get their values outside the block.



    let test;
    if (result.valid) {
        test = result.length_valid 
    } else {
        console.log('...');
    }
    console.log(test)