Random body background-image

问题

I've tried several tutorial on the web and none seems to work properly. What I'm trying to do is quite simple I think:

I have 9 different .jpg images that I need to randomly show up on page load - to be background. This should be fairly simple right?

Thanks,

EDIT (Sorry, forgot to attach the code - found in the web):

$(document).ready(function(){

    bgImageTotal=9;

    randomNumber = Math.round(Math.random()*(bgImageTotal-1))+1;

    imgPath=('../img/bg/'+randomNumber+'.jpg');

    $('body').css('background-image', ('url("'+imgPath+'")'));

});

回答1:

Check out this tutorial: http://briancray.com/2009/12/28/simple-image-randomizer-jquery/

First create an array of images:

var images = ['image1.jpg', 'image2.jpg', 'image3.jpg', 'image4.jpg', 'image5.jpg'];

Then, set a random image as the background image:

$('body').css({'background-image': 'url(images/' + images[Math.floor(Math.random() *      images.length)] + ')'});

That should work no problem.

回答2:

using jQuery: $("body").css("background-image", "url(" + Math.floor(Math.random()*9) + ".jpg)");

This is assuming, that your images are named 0.jpg until 8.jpg and are in the same directory as your page.

来源：https://stackoverflow.com/questions/8827691/random-body-background-image