window.alert("darsman.com");
alert("darsman.com");

console.log("darsman.com");

\n_h4 و \t 

alert("darsman\n.com");

alert("darsman\t.com");

document.write("darsman<br>.com");

<p id="ID">
darsman.com
</p>
<script>
document.getElementById('ID');
</script>

<p id="ID">
darsman.com
</p>
<script>
document.getElementById('ID').innerText="MehdiAbbasi";
</script>

<p id="ID">
darsman.com
</p>
<script>
document.getElementById('ID').innerHTML="MehdiAbbasi<hr>";
</script>

<input type="text" id="TXT" value="1398">
<script>
document.getElementById('TXT').value=0;