How can I this to jquery instead of it being javascript?

function showMssg() {

var message = document.getElementsByTagName('pre')[0];

var console = document.getElementById('console');

if (message.style.display == 'block') {

log += '

The log is now hidden.

';

message.style.display = 'none';

console.innerHTML = 'Show Console Log';

} else {

log += '

The log is now visible.

';

message.innerHTML = log;

message.style.display = 'block';

console.innerHTML = 'Hide Console Log';

}

}