我写这段代码是为了把我的作业作为练习来结束。
此代码使用nightmare.js.It控制浏览器,只需迭代单击按钮并等待一秒钟。
但是这段代码发出了堆内存不足的错误。我刚试过"--max-old-space-size=4096“。但它并没有起作用。有人来帮我吗??
我检查了迭代以外的其他工作。然后放迭代...,它不能工作,因为堆内存不足。老实说,我不擅长编码和英语。如果有写错的地方,请找我!
const Nightmare = require('nightmare');
const nightmare = Nightmare({show: true});
const LinguaURL = "";
const NumberOfMine = "";
const PwdOfMine = "";
var i,j = -1;
var selection, progress;
var radioSelect = -1;
function main() {
nightmare
.goto(LinguaURL)
.wait(1000)
.type("input[type='text']", NumberOfMine)
.type("input[type='password']", PwdOfMine)
.click("input[type='submit']")
.wait(5000)
.click('a[href="javascript:document.Study.submit()"]')
.wait(3000)
.click("input[type='button']")
.wait(3000);
for(i = 3;i<43;i++){
nightmare
.click('a[onclick="unit_view_page(\''+i.toString()+'\');"]');
while(true){
j++;
if(j % 4 == 0){
nightmare
.click('input[onclick="select_unit(\'drill\', \''+(1833+j).toString()+'\', \'\');"]')
.wait(1000);
while(true){
radioSelect++;
nightmare
.click('input[id="answer_0_' + radioSelect.toString() +'"]')
.wait(1000)
.click('input[id="ans_submit"]')
.wait(1000)
.evaluate(function (){
return selection = document.querySelector('.btn btn-answer-view form-font-size');
})
.evaluate(function (){
return progress = document.querySelector('btn btn-next-problem form-font-size');
});
if(selection == null && progress == null)break;
if(selection != null){
continue;
}else{
nightmare
.click('input[class="btn btn-next-problem form-font-size"]');
continue;
}
}
if((j + 1) % 10 == 0)break;
}
}
}
nightmare
.wait(100)
.end()
.then(console.log);
}
main();
发布于 2018-07-30 08:54:50
如果我没记错的话,我想这就是原因。
function main() {
for(i = 3;i<43;i++){
while(true){
j++;
if(j % 4 == 0){
while(true){
/**** break for the second while. ****/
if(selection == null && progress == null) break;
if(selection != null){
continue;
}else{
continue;
}
}
/**** break for the first while. ****/
// But this code will be run if 'j % 4 == 0',
// and I can't see any assigned the value to 'j' variable inside of 'if'.
// There's no way the result will be true.
if((j + 1) % 10 == 0) { break; }
}
}
}
}
var j = -1;
var limit = 2000 * 4;
while(true){
j++;
if(j != 0 && j % 1000 == 0) console.log("loop: " + j);
// here we go.
if(j % 4 == 0){
while(true){
break;
}
// But this code will be run if 'j % 4 == 0',
// and I can't see any assigned the value to 'j' variable inside of 'if'.
// There's no way the result will be true.
if((j + 1) % 10 == 0) { console.log("your if statement"); break; }
// limit
if (j == limit) { console.log("break using limit"); break; }
}
// Maybe (do you just want to run ten times?)
// if((j + 1) % 10 == 0) { console.log("[maybe] your if statement"); break; }
}
console.log("process end");
https://stackoverflow.com/questions/51581699
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