My knowledge of regex is not that good. That's why I check the general syntax with a simple regex first, and check more specific options with other functions afterwards. This may not be not the best technical solution, but this way I'm way more flexible and faster.

The most common errors I've come across are spaces (especially at the beginnging and end) and occasionally a double dot.

function check_email(val){
    if(!val.match(/\S+@\S+\.\S+/)){ // Jaymon's / Squirtle's solution
      // do something
      return false;
    }
    if( val.indexOf(' ')!=-1 || val.indexOf('..')!=-1){
      // do something
      return false;
    }
    return true;
}

check_email('check@thiscom'); // returns false
check_email('[email protected]'); // returns false
check_email(' [email protected]'); // returns false
check_email('[email protected]'); // returns true

My knowledge of regular expressions is not that good. That's why I check the general syntax with a simple regular expression first and check more specific options with other functions afterwards. This may not be not the best technical solution, but this way I'm way more flexible and faster.

The most common errors I've come across are spaces (especially at the beginning and end) and occasionally a double dot.

function check_email(val){
    if(!val.match(/\S+@\S+\.\S+/)){ // Jaymon's / Squirtle's solution
        // Do something
        return false;
    }
    if( val.indexOf(' ')!=-1 || val.indexOf('..')!=-1){
        // Do something
        return false;
    }
    return true;
}

check_email('check@thiscom'); // Returns false
check_email('[email protected]'); // Returns false
check_email(' [email protected]'); // Returns false
check_email('[email protected]'); // Returns true

My knowledge of regex is not that good. That's why I check the general syntax with a simple regex first, and check more specific options with other functions afterwards. This may not be not the best technical solution, but this way I'm way more flexible and faster.

The most common errors I've come across are spaces (especially at the beginnging and end) and occasionally a double dot.

function check_email(val){
    if(!val.match(/\S+@\S+\.\S+/)){ // Jaymon's / Squirtle's solution
      // do something
      return false;
    }
    if( val.indexOf(' ')!=-1 || val.indexOf('..')!=-1){
      // do something
      return false;
    }
}

check_email('[email protected]'); // returns false

My knowledge of regex is not that good. That's why I check the general syntax with a simple regex first, and check more specific options with other functions afterwards. This may not be not the best technical solution, but this way I'm way more flexible and faster.

The most common errors I've come across are spaces (especially at the beginnging and end) and occasionally a double dot.

function check_email(val){
    if(!val.match(/\S+@\S+\.\S+/)){ // Jaymon's / Squirtle's solution
      // do something
      return false;
    }
    if( val.indexOf(' ')!=-1 || val.indexOf('..')!=-1){
      // do something
      return false;
    }
    return true;
}

check_email('check@thiscom'); // returns false
check_email('[email protected]'); // returns false
check_email(' [email protected]'); // returns false
check_email('[email protected]'); // returns true