我正在编写一个简单的脚本,该脚本可以在网站上登录,然后转到另一个页面并单击按钮。 似乎可以找到按钮,但是单击后出现错误:
页面错误:ReferenceError:找不到变量:获取
如何解决此问题?
var casper = require('casper').create({
verbose: true,
logLevel: 'debug',
pageSettings: {
loadImages: false, // The WebPage instance used by Casper will
loadPlugins: false, // use these settings
userAgent: 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_5) AppleWebKit/537.4 (KHTML, like Gecko) Chrome/22.0.1229.94 Safari/537.4'
}
});
//print out all the messages in the headless browser context
casper.on('remote.message', function(msg) {
this.echo('remote message caught: ' + msg);
});
// print out all the messages in the headless browser context
casper.on("page.error", function(msg, trace) {
this.echo("Page Error: " + msg, "ERROR");
});
casper.on('resource.error', function(msg) {
this.echo('resource.error caught: ' + msg);
});
var url = 'https://firstPage.com';
casper.start(url, function() {
this.evaluate(function() {
document.getElementById("login").value = "name@email.com";
document.getElementById("password").value = "pass";
document.querySelector("loginButton").click();
});
});
casper.thenOpen('https://secondPage.com', function() {
console.log("Page Title " + document.title);
});
casper.waitForSelector('[data-content~="OK"]', function() {
this.click('[data-content~="OK"]');
})
答案 0 :(得分:0)
fetch
不会显示为您在脚本上调用的变量或DOM元素,这很奇怪,但是在这一行中,我假设您正在调用class
loginButton >
document.querySelector("loginButton").click();
如果这是一个类,则应放置.
(如果是ID,则应放置#
),否则它将寻找不存在的loginButton元素。试试:
document.querySelector(".loginButton").click();