Show password

HTML

<input type="password" name="password" id="password" placeholder="Password"/>
<input type="button" id="showMeVal" value="Show me !"/>

JavaScript

var shown = false;

$("#showMeVal").click(function() {
    if(shown) {
        $('input#password').removeAttr("type");
        $('input#password').prop('type', 'password');
        shown = false;
    }
    else {
        $('input#password').removeAttr("type");
        $('input#password').prop('type', 'text');
        shown = true;
    }

});