问题描述
我的casperjs测试中有一个页面有图像,我不要等到这个页面加载到下一步。我该怎么做 ?
我试过这种方式
I have one page in my casperjs test that has images , I dont what to wait until this page loaded to go to the next step. How can I do it ? I have tryed this way
var casper = require("casper").create({
onStepTimeout: function() {
this.echo("TIMEOUT" + this.requestUrl,"RED_BAR");
// Some skip page controlling code
},
);
var timeout = ~~casper.cli.get(0);
casper.start("http://127.0.0.1/index2.php", function () {
this.echo("FIRST GOOD PAGE", "GREEN_BAR");
casper.options.stepTimeout = timeout;
});
casper.thenOpen("http://127.0.0.1/slowpage.php", function() {
this.echo("SECOND PAGE LOADED - I want to be called even have received Timeout!", "GREEN_BAR");
});
casper.then(function() {
this.echo("THEN!", "GREEN_BAR");
});
但是casper只是在加载slopage.php之前调用onStepTimeout。
But it casper just calls onStepTimeout until slopage.php is loaded.
推荐答案
您可以在casper中添加 request.abort();
步骤结束步骤并继续下一步:
You can add request.abort();
in a casper step to end the step and proceed to the next step:
casper.then(function() {
request.abort();
this.echo('You will never see me');
});
casper.then(function() {
this.echo('I execute next');
});
您还可以根据打开$来检查是否要中止c $ c>请求。此函数将检查匹配的URL,然后在打开之前中止,并将返回http状态代码:
You can also check if you want to abort based on open
request. This function will check the url for a match and then abort before opening and will return an http status code:
casper.on('page.resource.requested', function(requestData, request) {
if (requestData.url.indexOf('slowpage.php') !== -1) {
request.abort();
}
});
您可以更改 waitTimeout
和 stepTimeout
设置。此外,在 pageSettings
下,您可以使casper不加载图像。示例:
You can change the waitTimeout
and stepTimeout
settings. Also, under pageSettings
you can make casper not load images. Example:
var casper = require('casper').create ({
waitTimeout: 10000,
stepTimeout: 10000,
verbose: true,
viewportSize: {
width: 1400,
height: 768
},
pageSettings: {
"userAgent": 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.10 (KHTML, like Gecko) Chrome/23.0.1262.0 Safari/537.10',
"loadImages": false,
"loadPlugins": false,
"webSecurityEnabled": false,
"ignoreSslErrors": true
},
onWaitTimeout: function() {
//throw new Error
},
onStepTimeout: function() {
//throw new Error
}
});
你可以使用casper 等待页面完全加载。只需返回true
。它甚至有自己的超时
功能。所以你可以这样做:
You can use casper waitFor to wait until the page has completely loaded. Just return true
. It even has its own timeout
function. So you could do something like this:
casper.waitFor(function check() {
casper.thenOpen("http://127.0.0.1/slowpage.php", function() {
//+++ casper will wait until this returns true to move forward.
//+++ The default timeout is set to 5000ms
this.evaluate(function() {
//checks for element exist
if (document.getElementById('someElement')) {
console.log('Im loaded!');
return true;
}
});
});
}, function then() { // step to execute when function check() is ok
//+++ executes ONLY after the 'casper.thenOpen' returns true.
this.echo("THEN!", "GREEN_BAR");
}, function timeout() { // step to execute if check has failed
//+++ code for on timeout. This is different than onStepTimeOut.
},1000);// custom timeOut setting.
这篇关于CasperJS跳过超时的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!