我怎么能重构这个jQuery代码？

Question

下面的代码是一个简单的简报注册小部件.

我确定有办法让它更简洁,任何想法？

var email_form = $('.widget_subscribe form'); 
var email_submit = $('.widget_subscribe .submit');
var email_link = $('.widget_subscribe .email');

// Hide the email entry form when the page loads
email_form.hide();

// Show the form when the email link is clicked
$(email_link).click( function () {
    $(this).toggle();
    $(email_form).toggle();
    return false;
});

// Hide the form when the form submit is clicked
$(email_submit).click( function () {
    $(email_link).toggle();
    $(email_form).toggle();
});

// Clear/reset the email input on focus 
$('input[name="email"]').focus( function () {
    $(this).val("");
    }).blur( function () {
        if ($(this).val() == "") {
            $(this).val($(this)[0].defaultValue);
        }
});

Answer 1

你在这里有一些类似的代码.

// Show the form when the email link is clicked
$(email_link).click( function () {
        $(this).toggle();
        $(email_form).toggle();
        return false;
});

// Hide the form when the form submit is clicked
$(email_submit).click( function () {
        $(email_link).toggle();
        $(email_form).toggle();
});

它可以被重构,因此相似性是显而易见的.

// Show the form when the email link is clicked
$(email_link).click( function () {
        $(email_link).toggle();
        $(email_form).toggle();
        return false;
});

// Hide the form when the form submit is clicked
$(email_submit).click( function () {
        $(email_link).toggle();
        $(email_form).toggle();
});

因此,您可以将链接和表单切换为函数.

var toggleEmailLinkAndForm = function () {
        $(email_link).toggle();
        $(email_form).toggle();
}   

$(email_link).click(toggleEmailLinkAndForm);
$(email_submit).click(toggleEmailLinkAndForm);

正如其他人所指出的那样,你可以放弃redunant $()s.

var toggleEmailLinkAndForm = function () {
        email_link.toggle();
        email_form.toggle();
}   

email_link.click(toggleEmailLinkAndForm);
email_submit.click(toggleEmailLinkAndForm);