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3
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1 'use strict';
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2
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3 function ajax(url,postData,context) {
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4 let request = new XMLHttpRequest();
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5 let method = postData ? 'POST' : 'GET';
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6 request.open( method, url );
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7 if( postData )
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8 request.setRequestHeader( 'Content-Type', 'application/x-www-form-urlencoded' );
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9 request.onload = function() {
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10 if( request.status !== 200 ) {
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11 let err = 'ajax failed: ' + request.status;
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12 if( request.responseText ) {
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13 err += '\n' + request.responseText.trim();
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14 document.write('<pre>'+request.responseText+'</pre>');
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15 }
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16 err += '\nurl = ' + url;
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17 err += '\npage = ' + window.location;
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18 ajax( '/error_log.js', 'err='+encodeURIComponent(err) );
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19 return;
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20 }
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21 try {
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22 eval( request.responseText );
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23 } catch(e) {
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24 console.log( request.responseText );
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25 window.err = '\najax-url = ' + url;
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26 throw e;
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27 }
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28 };
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29 request.send(postData);
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30 }
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31
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32 window.onerror = function(msg, url, line, col, error) {
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33 if( !url )
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34 return;
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35 let err = msg;
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36 err += '\nurl = ' + url;
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37 if( url != window.location )
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38 err += '\npage = ' + window.location;
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39 err += '\nline = '+line;
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40 if( col )
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41 err += '\ncolumn = ' + col;
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42 if( error ) {
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43 if( error.stack )
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44 err += '\nstack = ' + error.stack;
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45 if( error.cause )
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46 err += '\ncause= ' + error.cause;
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47 if( error.fileName )
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48 err += '\nfileName= ' + error.fileName;
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49 }
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50 if( window.err ) {
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51 err += window.err;
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52 window.err = null;
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53 }
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54 ajax( '/error_log.js', 'err='+encodeURIComponent(err) );
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55 };
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56
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57 function ajaxForm(url,form) {
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58 let post = '';
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59 for( let i=0; i<form.length; i++ ) {
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60 let input = form[i];
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61 let name = input.name;
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62 if( name === '' )
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63 continue;
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64 let type = input.type;
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65 if( (type==='radio' || type==='checkbox') && !input.checked )
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66 continue;
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67 post += name + '=' + encodeURIComponent(input.value) + '&';
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68 }
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69 ajax(url,post,{form:form});
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70 }
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71
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72 function logout() {
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73 document.cookie = 'user=; Max-Age=0; path=/;';
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74 document.cookie = 'password=; Max-Age=0; path=/;';
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75 location = '/';
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76 }
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