Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
画布脚本是否为循环执行，如果需要页面中做循环执行的脚本，需要如何实现
测试，画布的脚本，只是在加载画布的时候执行一次，然后就不执行了
默认是只执行一次，如果需要可以使用定时器多次执行
