我有以下代码(尝试使用casperjs运行它):
var casper = require('casper').create({
viewportSize: {width: 1024, height: 768},
verbose: true,
logLevel: 'debug',
onError: function(self, m) { // Any "error" level message will be written
console.log('FATAL:' + m); // on the console output and PhantomJS will
self.exit(); // terminate
}
});
casper.userAgent('Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)');
casper.start('http://casperjs.org/', function() {
var pageText = this.evaluate(function() {
return document;
});
if(pageText.indexOf('Casper') > -1) {
console.log("Already logged in");
} else {
console.log("Not logged in");
}
});
//
casper.run();
我收到以下输出:
casperjs test.js
[info] [phantom] Starting...
[info] [phantom] Running suite: 2 steps
[debug] [phantom] opening url: http://casperjs.org/, HTTP GET
[debug] [phantom] Navigation requested: url=http://casperjs.org/, type=Other, willNavigate=true, isMainFrame=true
[debug] [phantom] url changed to "http://casperjs.org/"
[debug] [phantom] Successfully injected Casper client-side utilities
[info] [phantom] Step anonymous 2/2 http://casperjs.org/ (HTTP 200)
TypeError: 'undefined' is not a function (evaluating 'pageText.indexOf('Casper')')
C:/wamp/www/tw/tw.js:16
C:/casperjs/modules/casper.js:1553 in runStep
C:/casperjs/modules/casper.js:399 in checkStep
有人可以告诉我为什么它无法评估pageText.indexOf('Casper')吗?我不知道:(
答案 0 :(得分:0)
事实上。 pageText在那里未定义。谢谢。这是一个虚假的问题。遗憾。