函数调用，分支，循环，语句示例。
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</head><body><script>function func1(param) {console.log("execute function 'func1'" + param);}let func2 = (param) => {console.log("Execute function func2" + param);}func1("hello");func2("world");</script><script>let i = 0;let j = 1;if (i > j) {console.log("i>j");} else if (i === j) {console.log("i===j");} else {console.log("i<j");}</script><script>let u = 0;switch (u) {case 0:console.log("0");break;case 1:console.log("1");break;default:console.log("-");}</script><script>let v = 10;while (v > 0) {v--;console.log(v);}for (v = 0; v < 10; v++) {console.log(v);}</script>
</body></html>运行结果：
![[Python] opencv - 什么是直方图？如何绘制图像的直方图？](http://pic.xiahunao.cn/[Python] opencv - 什么是直方图？如何绘制图像的直方图？)
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