JS初探，给博客首页添加一个贪吃蛇热力图

// 2022/9/2
// add_snake.js
// Author: 幼稚园园长
// SoftWare: WebStorm

window.onload = function () {
    if (window.location.pathname === '/') {
        let div = document.getElementsByClassName("cover-wrapper")[0];
        let newDiv = document.createElement("div");
        newDiv.className = "snake";
        newDiv.style.marginTop = "110px";
        newDiv.innerHTML = "<a href='https://github.com/yzyyz1387/' target='_blank'><img src=\"https://cdn.staticaly.com/gh/yzyyz1387/yzyyz1387/main/assets/github-contribution-grid-snake.svg\" alt=\"\" style=\"display: block; margin: 0 auto;background: #fff;\"></a>";
        div.insertAdjacentElement("afterend", newDiv);
        let width = window.screen.width;
        if (width < 580) {
            let postDiv = document.getElementsByClassName("l_body")[0];
            postDiv.style.margin = "0 auto";
        }
    }
};