无法在wheelnav.createWhee中读取未定义的属性'length'

Question

Wheelnav.js有一些问题 当我在html文件中包含脚本时，chrome显示此错误：

未捕获的TypeError：无法读取未定义的属性'length'     在wheelnav.createWheel（wheelnav.js：271）     在window.onload（script.js：14）

这是我的脚本：

window.onload = function() {
var wheel = new wheelnav("wheelDiv");

wheel = new wheelnav("wheelDiv");
wheel.wheelRadius = 130;
wheel.maxPercent = 1.2;
wheel.colors = colorpalette.oceanfive;
wheel.clickModeRotate = false;
wheel.slicePathFunction = slicePath().WheelSlice;
wheel.navAngle = 30;
wheel.createWheel(["basic", "hover", "select", null, null, null]);

wheel = new wheelnav("wheelDiv");
wheel.sliceHoverTransformFunction = 
sliceTransform().RotateTitleTransform;
wheel.sliceSelectedTransformFunction = 
sliceTransform().MoveMiddleTransform;
wheel.wheelRadius = wheel.wheelRadius * 0.8;
wheel.colors = colorpalette.fractallove;

wheel.createWheel(["Thank you", "for", "download", "hello"]);
wheel.navigateWheel(2);

var piemenu = new wheelnav("piemenu");
piemenu.wheelRadius = piemenu.wheelRadius * 0.83;
piemenu.createWheel();
};

Answer 1

看来您没有对应ID的div。

var piemenu = new wheelnav("piemenu");

它要求：

<div id="piemenu"></div>