PhantomJS 无法访问已删除 QObject 的成员 'evaluate'
PhantomJS cannot access member 'evaluate' of deleted QObject
function checkMessages(user, password, callback) {
var page = require('webpage').create();
page.open('http://mywebpage.com', function (status) {
if (status === 'fail') {
console.log(user + ': ?');
} else {
page.evaluate(function (user, password) {
document.querySelector('input[name=username]').value = user;
document.querySelector('input[name=password]').value = password;
document.querySelector('button[name=yt0]').click();
}, user, password);
waitFor(function() {
return page.evaluate(function() {
var el = document.getElementById('fancybox-wrap');
if (typeof(el) != 'undefined' && el != null) {
return true;
}
return false;
});
}, function() {
var messageCount = page.evaluate(function() {
var el = document.querySelector('span[class=unread-number]');
if (typeof(el) != 'undefined' && el != null) {
return el.innerText;
}
return 0;
});
console.log(messageCount);
});
}
page.close();
callback.apply();
});
}
出于某种原因,我无法让它工作。 PhantomJS 正在抱怨:"Error: cannot access member 'evaluate' of deleted QObject"。是不是因为我有多个 page.evaluates?
PhantomJS 是异步的。在这种情况下 waitFor()
是异步的,因此您需要在完成后关闭 page
。你需要移动
page.close();
callback.apply();
进入将要执行的最后一个函数,即 waitFor()
的回调。您可能需要稍微更改 waitFor
,以便在达到超时时有另一个回调,这是错误分支,也需要页面关闭和回调:
function waitFor(testFx, onReady, timeOutMillis) {
var maxtimeOutMillis = timeOutMillis ? timeOutMillis : 3000,
start = new Date().getTime(),
condition = false,
interval = setInterval(function() {
if ( (new Date().getTime() - start < maxtimeOutMillis) && !condition ) {
condition = testFx();
} else {
var error = null;
if(!condition) {
error = "'waitFor()' timeout";
console.log(error);
} else {
console.log("'waitFor()' finished in " + (new Date().getTime() - start) + "ms.");
clearInterval(interval);
}
onReady(error);
}
}, 250);
};
function checkMessages(user, password, callback) {
var page = require('webpage').create();
page.open('http://mywebpage.com', function (status) {
if (status === 'fail') {
console.log(user + ': ?');
} else {
page.evaluate(function (user, password) {
document.querySelector('input[name=username]').value = user;
document.querySelector('input[name=password]').value = password;
document.querySelector('button[name=yt0]').click();
}, user, password);
waitFor(function() {
return page.evaluate(function() {
var el = document.getElementById('fancybox-wrap');
if (typeof(el) != 'undefined' && el != null) {
return true;
}
return false;
});
}, function() {
var messageCount = page.evaluate(function() {
var el = document.querySelector('span[class=unread-number]');
if (typeof(el) != 'undefined' && el != null) {
return el.innerText;
}
return 0;
});
console.log(messageCount);
});
}
page.close();
callback.apply();
});
}
出于某种原因,我无法让它工作。 PhantomJS 正在抱怨:"Error: cannot access member 'evaluate' of deleted QObject"。是不是因为我有多个 page.evaluates?
PhantomJS 是异步的。在这种情况下 waitFor()
是异步的,因此您需要在完成后关闭 page
。你需要移动
page.close();
callback.apply();
进入将要执行的最后一个函数,即 waitFor()
的回调。您可能需要稍微更改 waitFor
,以便在达到超时时有另一个回调,这是错误分支,也需要页面关闭和回调:
function waitFor(testFx, onReady, timeOutMillis) {
var maxtimeOutMillis = timeOutMillis ? timeOutMillis : 3000,
start = new Date().getTime(),
condition = false,
interval = setInterval(function() {
if ( (new Date().getTime() - start < maxtimeOutMillis) && !condition ) {
condition = testFx();
} else {
var error = null;
if(!condition) {
error = "'waitFor()' timeout";
console.log(error);
} else {
console.log("'waitFor()' finished in " + (new Date().getTime() - start) + "ms.");
clearInterval(interval);
}
onReady(error);
}
}, 250);
};