javascript - 為什麼我用phantomjs抓取頁面，如果頁面資料多就抓取不到？
我想抓取一個愛淘寶的搜尋頁面，它是有js渲染產生的頁面，所以我選擇用phantomjs抓取。但是在抓取過程中出現一個問題。當搜尋結果超過兩個的時候，就取得不到數據。但是截圖顯示資料載入正常。我不知道是淘寶做了限制還是我程式碼出了問題，求大神幫忙解決。 
var url = "https://ai.m.taobao.com/search.html?q=%E5%90%8D%E4%BA%BA%E7%91%9E%E8%A3%B32017%E5%A4%8F%E8%A3%85%E6%96%B0%E6%AC%BE%E5%A5%B3%E8%A3%85%E8%A3%99%E5%AD%90%E5%8F%8A%E8%86%9D%E9%95%BF%E6%AC%BE%E4%BF%AE%E8%BA%AB%E5%81%87%E4%B8%A4%E4%BB%B6%E5%8D%B0%E8%8A%B1%E9%9B%AA%E7%BA%BA%E8%BF%9E%E8%A1%A3%E8%A3%99&spm=a311n.7676424.1000.1&prepvid=201_10.184.72.34_159920160034_1496243285841&pid=mm_33231688_7050284_23466709&env&unid&hidebar&isout&clk1&smart&rb";
var page =require('webpage').create();
var fs = require('fs');
page.settings = {
javascriptEnabled: true,
loadImages: false,
webSecurityEnabled: false,
userAgent: 'Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/34.0.1847.137 Safari/537.36 LBBROWSER'
};
page.open(url,function (status) {
if (status !== 'success') {
console.log('Unable to access thewebsite');
} else {
window.setTimeout(function () {
page.render('example1.png');
var val = page.evaluate(function(){
var data = document.querySelectorAll('p.item-thumbnail a.item-intro');
if ( data instanceof Array ) {
return 1;
console.log(1)
for (var i = 0, len = data.length; i < len; i++) {
console.log(data[i].innerHTML);
}
} else if ( data instanceof Object ) {
var description = "";
for (var i in data) {
description += i + " = " + data[i] + "\n";
}
return description;
// console.log(nextSibling(data).innerHTML);
} else {
return data;
}
});
console.log('The register address:' + val);
phantom.exit();
}, 1000);
};
});
