如何在Javascript中使文本中的每个字母变为不同的随机颜色

Question

I am trying to make every letter in a small line of text a different random color. I can only seem to make it do this when I use .hover, but I want it to do the action straight away (once the page loads). Please help. I would also like to know if anyone knows how to just set different colors on each letter (set colors) with css or Javascript because when I tried to do it in that way, it wouldnt allow me call a function on the same div/id (i tried to arch the text). Thank you.

THIS IS MY CODE

var colours = ["#000000", "#FF0000", "#990066", "#FF9966", "#996666", "#00FF00", "#CC9933"], 
    idx;

$("#arch").hover(function(){
    var div = $(this); 
    var chars = div.text().split('');
    div.html('');     
    for(var i=0; i<chars.length; i++) {
        idx = Math.floor(Math.random() * colours.length);
        var span = $('<span>' + chars[i] + '</span>').css("color", colours[idx])
        div.append(span);
    }

}, function() {
    $(this).find('span').css("color","#FF0000");
});

Answer 1

    var colours = ["#000000", "#FF0000", "#990066", "#FF9966", "#996666", "#00FF00", "#CC9933"], 
    idx;

$(function() {
    var div = $('#arch'); 
    var chars = div.text().split('');
    div.html('');     
    for(var i=0; i<chars.length; i++) {
        idx = Math.floor(Math.random() * colours.length);
        var span = $('<span>' + chars[i] + '</span>').css("color", colours[idx]);
        div.append(span);
    }
});

Works for me. jsFiddle

You have to make sure the DOM is loaded before doing any jQuery stuff on it.

http://learn.jquery.com/using-jquery-core/document-ready/

Answer 2

Try (untested):

$(document).ready(function(){
    var div = $('#arch'); 
    var chars = div.text().split('');
    div.html('');     
    for(var i=0; i<chars.length; i++) {
        idx = Math.floor(Math.random() * colours.length);
        var span = $('<span>' + chars[i] + '</span>').css("color", colours[idx])
        div.append(span);
    }
}

Basically, you need to wait for the DOM to load so that there's a div to find when you call $('#arch') !

I'm not sure what you mean by "tried to arch the text".