[HTML]将错误alert出来[转]

<script type="text/javascript">
/**
 * @param {String}  errorMessage   错误信息
 * @param {String}  scriptURI      出错的文件
 * @param {Long}    lineNumber     出错代码的行号
 * @param {Long}    columnNumber   出错代码的列号
 * @param {Object}  errorObj       错误的详细信息，Anything
 */
window.onerror = function(errorMessage, scriptURI, lineNumber, columnNumber, errorObj) {
    var msg = ‘‘;
    var CRLF = String.fromCharCode(13) + String.fromCharCode(10);
    msg += ‘错误信息：‘ + errorMessage + CRLF;
    msg += ‘出错文件：‘ + scriptURI + ‘(‘ + lineNumber + ‘,‘ + columnNumber + ‘)‘ + CRLF;
    msg += ‘错误详情：‘ + errorObj;
    alert(msg);
}
</script>