SOURCE

function test() {
    const dp = []
    dp[0] = 1, dp[1] = 1, dp[2] = 2
    return function step(n) {
        if (typeof (dp[n]) === 'number') return dp[n]
        for (let i = 3; i < n; i++) {
            dp[i] = dp[i - 1] + dp[i - 2]
        }
        return dp[n - 1]
    }
}
console.log(test()(5))


function verifyPhone(number) {
    const reg = /^1[2-9]\d{9}$/
    return reg.test(number)
}
function verifyEmail(email) {
    const reg = /^[a-zA-Z0-9._-]/
}
// function formatDate(date,format) {
//     var day = date.getDate()
//     var month = date.getMonth()+1
//     var year = date.getFullYear()
//     format = format.replace(/yyyy/,year)
// }
function markdownToHTML(markdown) {
    // 使用正则表达式进行替换
    const html = markdown.replace(/###(\w+)/g, '<h3>$1</h3>')
                         .replace(/##(\w+)/g, '<h2>$1</h2>')
                         .replace(/#(\w+)/g, '<h1>$1</h1>')
                       

    return html;
}

const markdownText = "###g##g#g";
const htmlResult = markdownToHTML(markdownText);
console.log(htmlResult);

console.log(verifyPhone())