javascript - Blank page while trying to crawl angularjs based websites -

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i trying crawl website using angularjs, when tried open, give blank page.

for example,the main website of angularjs - https://angularjs.org/ here code writing -

var page = require('webpage').create(); page.viewportsize = {width: 1280, height: 1024}; page.settings.useragent = 'mozilla/5.0 (x11; linux x86_64) applewebkit/537.36 (khtml, gecko) chrome/46.0.2490.86 safari/537.36'; page.settings.javascriptenabled = true;  page.open('https://angularjs.org/', function(status) {             if(status == 'success') {                 console.log("hello");                 page.render('web.png');         phantom.exit();             }             else {                 console.log("error opening page");                 phantom.exit();             }  });


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