​

​

window.onload = function(){

    var tweet = document.getElementById("tweet_entered");

    tweet.onkeypress = checkTweetLength;

}

    function checkTweetLength() {

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        console.log('Hey');

        document.getElementById("tweet_length").innerHTML =   140 - this.value.length; 

    }else {

        console.log('else block');

        document.getElementById("tweet_length").innerHTML = this.value.length;

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 }