<table width="60%" border="0" align="center" cellpadding="7" cellspacing="1" bgcolor="#CCCCCC" class="content">
<tr >
<td height="25" bgcolor="#f5f5f5" id="dai">
<p style="text-indent: 0em;">Hello World!</p></td>
</tr>
</table>

window.onerror = function(errorMessage, scriptURI, lineNo, columnNo, error) {
console.log('errorMessage: ' + errorMessage); // Òì³£ÐÅÏ¢
console.log('scriptURI: ' + scriptURI); // Òì³£Îļþ·¾¶
console.log('lineNo: ' + lineNo); // Òì³£ÐкÅ
console.log('columnNo: ' + columnNo); // Òì³£ÁкÅ
console.log('error: ' + error); // Òì³£¶ÑÕ»ÐÅÏ¢
};

console.log(a);

<!-- http://localhost:3031/ -->
<script>
window.onerror = function() {
console.log(arguments);
};
</script>
<script src="http://cdn.xxx.com/index.js"></script>

<script src="http://cdn.xxx.com/index.js" crossorigin="anonymous"></script>

// webpack.config.js
var path = require('path');

// webpack 4.1.1
module.exports = {
mode: 'development',
entry: './client/index.js',
output: {
filename: 'bundle.js',
path: path.resolve(__dirname, 'client')
}
}

!function(e){var o={};function n(r){if(o[r])return o[r].exports;var t=o[r]={i:r,l:!1,exports:{}}...;

module.exports = {
...
devtool: '#source-map',
...
}

!function(e){var o={};function n(r){if(o[r])return o[r].exports;var t=o[r]={i:r,l:!1,exports:{}}...;
//# sourceMappingURL=bundle.js.map

version: 3, // Source mapµÄ°æ±¾
sources: ["webpack:///webpack/bootstrap", ...], // ת»»Ç°µÄÎļþ
names: ["installedModules", "__webpack_require__", ...], // ת»»Ç°µÄËùÓбäÁ¿ÃûºÍÊôÐÔÃû
mappings: "aACA,IAAAA,KAGA,SAAAC...", // ¼Ç¼λÖÃÐÅÏ¢µÄ×Ö·û´®
file: "bundle.js", // ת»»ºóµÄÎļþÃû
sourcesContent: ["// The module cache var installedModules = {};..."], // Ô´´úÂë
sourceRoot: "" // ת»»Ç°µÄÎļþËùÔÚµÄĿ¼

Vue.config.errorHandler = function (err, vm, info) {
let {
message, // Òì³£ÐÅÏ¢
name, // Òì³£Ãû³Æ
script, // Òì³£½Å±¾url
line, // Òì³£ÐкÅ
column, // Òì³£ÁкÅ
stack // Òì³£¶ÑÕ»ÐÅÏ¢
} = err;

// vmΪÅ׳öÒì³£µÄ Vue ʵÀý
// infoΪ Vue Ìض¨µÄ´íÎóÐÅÏ¢£¬±ÈÈç´íÎóËùÔÚµÄÉúÃüÖÜÆÚ¹³×Ó
}

class ErrorBoundary extends React.Component {
constructor(props) {
super(props);
this.state = { hasError: false };
}

componentDidCatch(error, info) {
this.setState({ hasError: true });

// ½«Òì³£ÐÅÏ¢Éϱ¨¸ø·þÎñÆ÷
logErrorToMyService(error, info);
}

render() {
if (this.state.hasError) {
return '³ö´íÁË';
}

return this.props.children;
}
}

<ErrorBoundary>
<MyWidget />
</ErrorBoundary>

window.onerror = function(errorMessage, scriptURI, lineNo, columnNo, error) {

// ¹¹½¨´íÎó¶ÔÏó
var errorObj = {
errorMessage: errorMessage || null,
scriptURI: scriptURI || null,
lineNo: lineNo || null,
columnNo: columnNo || null,
stack: error && error.stack ? error.stack : null
};

if (XMLHttpRequest) {
var xhr = new XMLHttpRequest();

xhr.open('post', '/middleware/errorMsg', true); // Éϱ¨¸ønodeÖмä²ã´¦Àí
xhr.setRequestHeader('Content-Type', 'application/json'); // ÉèÖÃÇëÇóÍ·
xhr.send(JSON.stringify(errorObj)); // ·¢ËͲÎÊý
}
}

const express = require('express');
const fs = require('fs');
const router = express.Router();
const fetch = require('node-fetch');
const sourceMap = require('source-map');
const path = require('path');
const resolve = file => path.resolve(__dirname, file);

// ¶¨Òåpost½Ó¿Ú
router.post('/errorMsg/', function(req, res) {
let error = req.body; // »ñÈ¡Ç°¶Ë´«¹ýÀ´µÄ±¨´í¶ÔÏó
let url = error.scriptURI; // ѹËõÎļþ·¾¶

if (url) {
let fileUrl = url.slice(url.indexOf('client/')) + '.map'; // mapÎļþ·¾¶

// ½âÎösourceMap
let smc = new sourceMap.SourceMapConsumer(fs.readFileSync(resolve('../' + fileUrl), 'utf8')); // ·µ»ØÒ»¸öpromise¶ÔÏó

smc.then(function(result) {

// ½âÎöԭʼ±¨´íÊý¾Ý
let ret = result.originalPositionFor({
line: error.lineNo, // ѹËõºóµÄÐкÅ
column: error.columnNo // ѹËõºóµÄÁкÅ
});

let url = ''; // Éϱ¨µØÖ·

// ½«Òì³£Éϱ¨ÖÁºǫ́
fetch(url, {
method: 'POST',
headers: {
'Content-Type': 'application/json'
},
body: JSON.stringify({
errorMessage: error.errorMessage, // ±¨´íÐÅÏ¢
source: ret.source, // ±¨´íÎļþ·¾¶
line: ret.line, // ±¨´íÎļþÐкÅ
column: ret.column, // ±¨´íÎļþÁкÅ
stack: error.stack // ±¨´í¶ÑÕ»
})
}).then(function(response) {
return response.json();
}).then(function(json) {
res.json(json);
});
})
}
});

module.exports = router;