9、JavaScript 控制流全解析

JavaScript 控制流全解析

1. Crown and Anchor 模拟程序

在 Crown and Anchor 模拟程序中，我们可以将流程图的各个部分整合起来编写完整的程序。以下是完整的代码实现：

// returns a random integer in the range [m, n] (inclusive)
function rand(m, n) {
    return m + Math.floor((n - m + 1)*Math.random());
}

// randomly returns a string representing one of the six
// Crown and Anchor faces
function randFace() {
    return ["crown", "anchor", "heart", "spade", "club", "diamond"]
        [rand(0, 5)];
}

let funds = 50;     // starting conditions
let round = 0;

while(funds > 1 && funds < 100) {
    round++;
    console.log(`round ${round}:`);
    console.log(`\tstarting funds: ${funds}p`);

    // place bets
    let bets = { crown: 0, anchor: 0, heart: 0,
        spade: