// ==UserScript==
// @name         沃尔玛查询upc
// @namespace    http://tampermonkey.net/
// @version      0.2
// @description  在页面显示商品UPC码
// @author       Take
// @match        *://www.walmart.com/ip/*
// @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant        none
// @downloadURL none
// ==/UserScript==

(function() {
    var html = document.documentElement.outerHTML;
    var a = html.indexOf('"upc":"');
    var b = html.indexOf('","fetched"');
    var upc = html.substring(a+7,b);
    console.log("upc为：",upc);
    if(upc!="" && upc.length<=12){
        var div = document.createElement("div");
        div.innerHTML = "<div class='upc' onclick='copyText()'>UPC："+upc+"</div><style>.upc{position: fixed;right: 0;top: 18%;background-color: #2271dc;border-radius: 5px;color: white;padding: 5px 15px;z-index: 99999;}</style>";
        document.body.appendChild(div);
    }



})();