在定义之前使用了“ setTimeout”

Question

This is the only error I'm getting for my code now.

'setTimeout' was used before it was defined.

It occurs due to this line:

setTimeout("a()");

What should I do about it in order to pass validation? This is my full code:

/*global document, window */
function checkTime(i) {
    'use strict';
    if (i < 10) {
        i = "0" + i;
    }
    return i;
}
function a() {
    'use strict';
    var oct = ["0", "1", "2", "3", "4", "5", "6", "7"],
        octtime,
        oct1,
        oct2,
        oct3,
        oct4,
        oct5,
        oct6,
        octvalue,
        point = ".",
        now = new Date(),
        hours = now.getHours(),
        minutes = now.getMinutes(),
        seconds = now.getSeconds(),
        h = checkTime(hours),
        m = checkTime(minutes),
        s = checkTime(seconds),
        totsecs = [hours * 3600 + minutes * 60 + seconds + (now.getTime() % 1000) / 1000];
    octtime = Math.floor(totsecs / (86400 / 262144));
    oct1 = Math.floor(octtime / 32768);
    octtime -= 32768 * oct1;
    oct2 = Math.floor(octtime / 4096);
    octtime -= 4096 * oct2;
    oct3 = Math.floor(octtime / 512);
    octtime -= 512 * oct3;
    oct4 = Math.floor(octtime / 64);
    octtime -= 64 * oct4;
    oct5 = Math.floor(octtime / 8);
    octtime -= 8 * oct5;
    oct6 = octtime;
    octvalue = point + oct[oct1] + oct[oct2] + oct[oct3] + oct[oct4] + oct[oct5] + oct[oct6];
    document.getElementById('a').innerHTML = h + ":" + m + ":" + s;
    document.getElementById('b').innerHTML = octvalue;
    setTimeout("a()");
}
window.onload = a;

Answer 1

If you're developing for a browser environment - declare it: set the environment instead:

/*jslint browser: true, devel: true */

This will enable everything in browsers - so you can drop the window/document globals too.

While you're at it, pass it the function rather than a string

setTimeout(a); // and not "a()"

Answer 2

I think that you could try in this way, you have already this correct line

/*global document, window */

just call setTimeout with the prefix of window

window.setTimeout(a);