如何使用JavaScript循环动态更改SVG对象颜色？

I constructed a network with about 1000 nodes in SVG format. Now I want to change the color of all the nodes dynamically (with time). For starters I just want to make sure that the circles/nodes in my SVG figure change colors with time based on a random number generator. Can I use a simple for loop in JavaScript to bring about N number of node color changing events?I constructed a network with about 1000 nodes i