阻止用户在文本区域中输入某些单词

Question

so I have a site and I would like my users to not be able to words like ".com" or ".net" etc. If they do enter it then i just want it to replace with a space. So far I have toe javascript code for if users were to type in any html code into the text area, then it would replace it with a space, I want the same to to happen if they were to type out those certain words.

function stoppedTyping(){
    if(this.value.length > 0) { 
        document.getElementById('post_btn').disabled = false; 
    } else { 
        document.getElementById('post_btn').disabled = true;
    }

    var re = /(<([^>]+)>)/gi;
    for (i=0; i < arguments.length; i++){
    arguments[i].value=arguments[i].value.replace(re, "");
    }
    var se = ".com";
    for(a=0; a < arguments.length; a++){
            arguments[a].value=arguments[a].value.replace(se, "");
    }
}

The last var se.... is my attempt to try and replace the word. But it isn't working. Thanks in advance!

Answer 1

For real-time replacements, I would use onkeyup to listen to whenever the user finishes pressing a key. Here's a JSFiddle demo: http://jsfiddle.net/kLTq5/1/