如何关注 CasperJS 中的所有链接? [英] How to follow all links in CasperJS?

问题描述

我无法单击 DOM 中所有基于 JavaScript 的链接并保存输出.链接的形式为

I'm having trouble clicking all JavaScript based links in a DOM and saving the output. The links have the form

<a id="html" href="javascript:void(0);" onclick="goToHtml();">HTML</a>

以下代码效果很好:

var casper = require('casper').create();

var fs = require('fs');

var firstUrl = 'http://www.testurl.com/test.html';

var css_selector = '#jan_html';

casper.start(firstUrl);

casper.thenClick(css_selector, function(){
    console.log("whoop");
});

casper.waitFor(function check() {
    return this.getCurrentUrl() != firstUrl;
}, function then() {
    console.log(this.getCurrentUrl());
    var file_title = this.getTitle().split(' ').join('_') + '.html';
    fs.write(file_title, this.getPageContent());
});

casper.run();

但是，我怎样才能让它与a"的选择器一起工作，点击所有可用链接和保存内容?我不确定如何让 clickWhileSelector 从选择器中删除节点，如下所示:点击所有与选择器匹配的链接

However, how can I get this to work with a selector of "a", clicking all available links and saving content? I'm not sure how to get the clickWhileSelector to remove nodes from the selector as is done here: Click on all links matching a selector

推荐答案

我有这个脚本，它首先从一个页面获取所有链接，然后将 'href' 属性保存到一个数组，然后遍历这个数组，然后打开每个一一链接并回显网址:

I have this script that first will get all links from a page then save 'href' attributes to an array, then will iterate over this array and then open each link one by one and echo the url :

var casper = require('casper').create({
    logLevel:"verbose",
    debug:true
});
var links;

casper.start('http://localhost:8000');

casper.then(function getLinks(){
     links = this.evaluate(function(){
        var links = document.getElementsByTagName('a');
        links = Array.prototype.map.call(links,function(link){
            return link.getAttribute('href');
        });
        return links;
    });
});
casper.then(function(){
    this.each(links,function(self,link){
        self.thenOpen(link,function(a){
            this.echo(this.getCurrentUrl());
        });
    });
});
casper.run(function(){
    this.exit();
});

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