\u987e\u540d\u601d\u4e49,\u524d\u7aef\u76d1\u63a7\u662f\u5bf9\u524d\u7aef\u9879\u76ee\u90e8\u7f72\u4e0a\u7ebf\u4ee5\u540e\u7684\u4e00\u4e9b\u89c2\u5bdf\u548c\u6536\u96c6\u884c\u4e3a,\u4e00\u65b9\u9762\u4e3b\u8981\u6536\u96c6\u524d\u7aef\u7684\u62a5\u9519\u4fe1\u606f<\/strong>,\u53e6\u4e00\u65b9\u9762\u53ef\u4ee5\u5bf9\u67d0\u4e9b\u64cd\u4f5c\u8fdb\u884c \u57cb\u70b9<\/strong> \u8bb0\u5f55\u4e00\u4e9b\u7528\u6237\u884c\u4e3a,\u540e\u671f\u53ef\u4ee5\u9488\u5bf9\u8fd9\u4e9b\u7528\u6237\u884c\u4e3a\u8fdb\u884c\u6570\u636e\u5206\u6790\u3002\u4e0b\u9762\u8be6\u7ec6\u8bf4\u4e00\u4e0b\u9488\u5bf9\u62a5\u9519\u4fe1\u606f\u65b9\u9762\u7684\u76d1\u63a7<\/p>\n\n\n\n \u603b\u4f53\u601d\u8def\u662f\u5728\u5168\u5c40\u6ce8\u518cerror\u4e8b\u4ef6\uff0c\u5bf9\u6240\u6709\u7684\u9519\u8bef\u4e8b\u4ef6\u8fdb\u884c\u62e6\u622a\uff0c\u83b7\u53d6\u62e6\u622a\u540e\u7684\u62a5\u9519\u4fe1\u606f\u548c\u7528\u6237\u53ca\u8bbe\u5907\u4fe1\u606f\uff0c\u5c06\u6536\u96c6\u7684\u4fe1\u606f\u4e0a\u4f20\u5230\u670d\u52a1\u7aef\u3002<\/p>\n\n\n\n \u6536\u96c6 promise \u9519\u8bef \u9700\u8981\u501f\u52a9 unhandledrejection \u4e8b\u4ef6\uff0c DMN\u5b98\u65b9\u89e3\u91ca\u5f53Promise\u88ab reject \u4e14\u6ca1\u6709 reject \u5904\u7406\u5668\u7684\u65f6\u5019\u89e6\u53d1\u3002<\/p>\n\n\n\n elementsFromPoint \u8be5\u51fd\u6570\u8fd4\u56de\u5728\u7279\u5b9a\u5750\u6807\u70b9\u4e0b\u7684HTML\u5143\u7d20\u7684\u6570\u7ec4\uff0c\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\uff08x\u5750\u6807\uff0cy\u5750\u6807\uff09<\/p>\n\n\n\n
\n\n\n\n\u5982\u4f55\u8fdb\u884c\u524d\u7aef\u76d1\u63a7<\/h2>\n\n\n\n
\n\n\n\n\u524d\u7aef\u76d1\u63a7\u7684\u7c7b\u522b\uff08\u4e00\uff09\u2014\u2014 \u7a33\u5b9a\u6027<\/h2>\n\n\n\n
\u9519\u8bef\u540d\u79f0<\/th> \u5907\u6ce8<\/th><\/tr><\/thead> JS\u9519\u8bef<\/td> JS\u9519\u8bef\uff08\u4f7f\u7528error\u76d1\u542c\uff09\u548cPromise\u9519\u8bef\uff08\u4f7f\u7528unhandledrejection\u76d1\u542c\uff09<\/td><\/tr> \u8d44\u6e90\u5f02\u5e38<\/td> \u6355\u83b7\u4e00\u4e9b\u9759\u6001\u8d44\u6e90\u6587\u4ef6404\u7684\u5f02\u5e38\u4fe1\u606f\uff08\u4f7f\u7528error\u76d1\u542c\uff09<\/td><\/tr> \u63a5\u53e3\u5f02\u5e38<\/td> \u6355\u83b7 ajax \u548c axios \u7684\u52a8\u5411\uff08\u539f\u7406\u90fd\u662f XMLHttpRequest\uff09<\/td><\/tr> \u767d\u5c4f\u76d1\u542c<\/td> \u6355\u83b7\u9875\u9762\u662f\u5426\u767d\u5c4f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n \u6536\u96c6JS\u62a5\u9519\u4fe1\u606f<\/h3>\n\n\n\n
window.addEventListener(\"error\",(event)=>{
log = {
kind:\"stability\",\/\/ \u76d1\u63a7\u6307\u6807\u7684\u5927\u7c7b
type:\"error\",\/\/ \u5c0f\u7c7b\u578b
errorType:\"jsError\",\/\/ JS\u6267\u884c\u9519\u8bef
message:event.message, \/\/ \u62a5\u9519\u4fe1\u606f
filename:event.filename, \/\/ \u62a5\u9519\u6587\u4ef6
position:`${event.lineno}:${event.colno}`, \/\/ \u62a5\u9519\u884c\u6570
stack:getLines(event.error.stack), \/\/ \u5806\u6808\u4fe1\u606f
}
},true)<\/code><\/pre>\n\n\n\n\u6536\u96c6 Promise \u62a5\u9519\u4fe1\u606f<\/h3>\n\n\n\n
window.addEventListener( \"unhandledrejection\",(event) => {
let lastEvent = getLastEvent();
let message;
let filename;
let line = 0;
let column = 0;
let stack = \"\";
let reason = event.reason;
if (typeof reason === \"string\") {
message = event.event;
} else if (typeof reason === \"object\") {
if (reason.stack) {
let matchResult = reason.stack.match(\/at\\s+(.+):(\\d+):(\\d+)\/);
filename = matchResult[1];
line = matchResult[2];
column = matchResult[3];
}
stack = getLines(reason.stack);
}
let log = {
kind: \"stability\", \/\/ \u76d1\u63a7\u6307\u6807\u7684\u5927\u7c7b
type: \"error\", \/\/ \u5c0f\u7c7b\u578b
errorType: \"promiseError\", \/\/ promise\u9519\u8bef
message: message, \/\/ \u62a5\u9519\u4fe1\u606f
filename: filename, \/\/ \u62a5\u9519\u6587\u4ef6
position: `${line}:${column}`, \/\/ \u62a5\u9519\u884c\u6570
stack: stack, \/\/ \u5806\u6808\u4fe1\u606f
};
},true);
\/*\u5806\u6808\u4fe1\u606f\u683c\u5f0f\u5316*\/
function getLines(stack) {
return stack
.split(\"\\n\")
.slice(1)
.map((item) => item.replace(\/^\\s+at\\s+\/g, \"\"))
.join(\"^\");
}<\/code><\/pre>\n\n\n\n\u8d44\u6e90 (404)\u5f02\u5e38\u6355\u83b7<\/h3>\n\n\n\n
window.addEventListener(\"error\",(event)=>{
if(event.target && (event.target.src || event.target.href)){
log = {
kind:\"stability\",\/\/ \u76d1\u63a7\u6307\u6807\u7684\u5927\u7c7b
type:\"error\",\/\/ \u5c0f\u7c7b\u578b
errorType:\"resourceError\",\/\/ js \u6216 css\u8d44\u6e90\u52a0\u8f7d\u9519\u8bef
url:'', \/\/ \u8bbf\u95ee\u54ea\u4e2a\u8def\u5f84\u62a5\u9519
filename:event.target.src || event.target.href, \/\/ \u62a5\u9519\u6587\u4ef6
tagName:event.target.tagName\/\/\u6807\u7b7e\u540d
}
}
},true)<\/code><\/pre>\n\n\n\n\u63a5\u53e3\u5f02\u5e38<\/h3>\n\n\n\n
export default function injectXHR(){
let XMLHttpRequest = window.XMLHttpRequest;
let oldOpen = XMLHttpRequest.prototype.open;
XMLHttpRequest.prototype.open = function(method,url,async){
\/**
* \u5728\u9879\u76ee\u4e2d\u9700\u8981\u8fc7\u6ee4\u6389 \u76d1\u63a7\u63a5\u53e3\u7684,\u5426\u5219\u63a5\u53e3\u76d1\u542c\u4f1a\u51fa\u73b0\u6b7b\u5faa\u73af
* if(url.match(\/url\/)){
* this.logData = {method,url,async}
* }
*\/
this.logData = {method,url,async}
return oldOpen.apply(this,arguments)
}
let oldSend = XMLHttpRequest.prototype.send;
XMLHttpRequest.prototype.send = function(body){
if(this.logData){
let startTime = Date.now();
let handler = (type)=> (event)=>{
let duration = Date.now() - startTime;
let status = this.status; \/\/ 200 OR 500
let statusText = this.statusText; \/\/ ok OR Server Error
let log = {
kind:\"stability\",
type:'xhr',
eventType:type, \/\/ \u9519\u8bef\u7c7b\u578b load error abort
pathname:this.logData.url, \/\/ \u8bf7\u6c42\u8def\u5f84
status:status+\"-\"+statusText, \/\/ \u72b6\u6001\u7801
duration:duration, \/\/ \u6301\u7eed\u65f6\u95f4
response:this.response?JSON.stringify(this.response):\"\", \/\/ \u54cd\u5e94\u4f53
params:body || \"\"
}
console.log('\u8bf7\u6c42\u63a5\u53e3\u76d1\u542c\u4e0a\u62a5',log)
}
this.addEventListener('load',handler(\"load\"),false);
this.addEventListener(\"error\",handler(\"error\"),false)
this.addEventListener(\"abort\",handler(\"abort\"),false)
}
return oldSend.apply(this,arguments)
}
}<\/code><\/pre>\n\n\n\n\u767d\u5c4f\u5f02\u5e38\u6355\u83b7<\/h3>\n\n\n\n
export function blankScreen() {
let wrapperElements = ['html', 'body', '#container', '.content'];
let emptyPoints = 0;
function getSelector(element) {
if (element.id) {
return \"#\" + element.id;
} else if (element.className) {\/\/ a b c => .a.b.c
return \".\" + element.className.split(' ').filter(item => !!item).join('.');
} else {
return element.nodeName.toLowerCase();
}
}
function isWrapper(element) {
let selector = getSelector(element);
if (wrapperElements.indexOf(selector) != -1) {
emptyPoints++;
}
}
onload(function () {
for (let i = 1; i <= 9; i++) {
let xElements = document.elementsFromPoint(
window.innerWidth * i \/ 10, window.innerHeight \/ 2);
let yElements = document.elementsFromPoint(
window.innerWidth \/ 2, window.innerHeight * i \/ 10);
isWrapper(xElements[0]);
isWrapper(yElements[0]);
}
\u200b
if (emptyPoints > 0) {
let centerElements = document.elementsFromPoint(
window.innerWidth \/ 2, window.innerHeight \/ 2
);
let log = {
kind: 'stability',
type: 'blank',
emptyPoints,
screen: window.screen.width + \"X\" + window.screen.height,
viewPoint: window.innerWidth + \"X\" + window.innerHeight,
selector: getSelector(centerElements[0])
};
console.log(\"\u767d\u5c4f\u6e32\u67d3\",log)
}
});
}
\/\/ \u9875\u9762\u52a0\u8f7d\u5b8c\u89e6\u53d1
function onload (callback) {
if (document.readyState === 'complete') {
callback();
} else {
window.addEventListener('load', callback);
}
}<\/code><\/pre>\n\n\n\n