javascript - PhantomJS Login and Page Redirect - Stack Overflow

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I am trying to crawl a website which kind of have a login page seperated and jumping homepage after login. Here is my code, but I am not acplishment jumping homepage:

var page = require('webpage').create() ;
var login = '' ;
var home = '' ;

page.open(login, function (status) {
    if (status !== 'success') {
        console.log('fail!');
    } else {
        page.evaluate(function(){
            function timer (f,n) {
                var i = 0 ;
                var t = setInterval(function(){
                    if (n < i) {
                        clearInterval(t) ;
                        f() ;
                    }
                    i++ ;
                },50) ;
            }
            $("input[name=email]").val("user") ;
            $("input[name=password]").val("pass") ;
            $("input[type=submit]").click() ;
            timer(function(){
                document.location.href = home ;
                timer(function(){
                    $('body').css('border','1px solid red') ;
                },100) ;
            },100) ;
        }) ;
        page.render('page.png') ;
    }
    console.log('finished!') ;
    phantom.exit() ;
});

I am trying to crawl a website which kind of have a login page seperated and jumping homepage after login. Here is my code, but I am not acplishment jumping homepage:

var page = require('webpage').create() ;
var login = 'https://webstie./login' ;
var home = 'https://website./home' ;

page.open(login, function (status) {
    if (status !== 'success') {
        console.log('fail!');
    } else {
        page.evaluate(function(){
            function timer (f,n) {
                var i = 0 ;
                var t = setInterval(function(){
                    if (n < i) {
                        clearInterval(t) ;
                        f() ;
                    }
                    i++ ;
                },50) ;
            }
            $("input[name=email]").val("user") ;
            $("input[name=password]").val("pass") ;
            $("input[type=submit]").click() ;
            timer(function(){
                document.location.href = home ;
                timer(function(){
                    $('body').css('border','1px solid red') ;
                },100) ;
            },100) ;
        }) ;
        page.render('page.png') ;
    }
    console.log('finished!') ;
    phantom.exit() ;
});

• javascript
• phantomjs

Share Improve this question Follow asked Oct 18, 2015 at 10:10 DigerkamDigerkam 1,91944 gold badges2424 silver badges4141 bronze badges

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1 Answer 1

Sorted by: Reset to default 6

You forgot to wait for asynchronous processing. Your timer() function is asynchronous, because setTimeout() is asynchronous. That is why your page.render() call happens actually before the timer() has run. The same goes for phantom.exit().

But you don't want to use document.location.href = home, because then you need to listen to the page open event. You can do this in an integrated fashion with another page.open().

Try:

page.open(login, function (status) {
    if (status !== 'success') {
        console.log('fail!');
        phantom.exit(1);
    } else {
        page.evaluate(function(){
            $("input[name=email]").val("user") ;
            $("input[name=password]").val("pass") ;
            $("input[type=submit]").click() ;
        });
        setTimeout(function(){
            page.open(home, function(status){
                if (status !== "success") {
                    console.log('fail2');
                    phantom.exit(1);
                    return;
                }
                page.evaluate(function(){
                    $('body').css('border','1px solid red') ;
                });
                page.render('page.png');
                console.log('finished!');
                phantom.exit();
            });
        }, 500);
    }
});

Use waitFor() for more robust waiting for a specific condition or use the page.onCallback and window.callPhantom() pair.

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