权限没有,则隐藏 function forum_list_access_filter($forumlist, $gid, $allow = 'allowread') { global $grouplist; if (empty($forumlist)) return array(); if (1 == $gid) return $forumlist; $forumlist_filter = $forumlist; $group = $grouplist[$gid]; foreach ($forumlist_filter as $fid => $forum) { if (empty($forum['accesson']) && empty($group[$allow]) || !empty($forum['accesson']) && empty($forum['accesslist'][$gid][$allow])) { unset($forumlist_filter[$fid]); } unset($forumlist_filter[$fid]['accesslist']); } return $forumlist_filter; } function forum_filter_moduid($moduids) { $moduids = trim($moduids); if (empty($moduids)) return ''; $arr = explode(',', $moduids); $r = array(); foreach ($arr as $_uid) { $_uid = intval($_uid); $_user = user_read($_uid); if (empty($_user)) continue; if ($_user['gid'] > 4) continue; $r[] = $_uid; } return implode(',', $r); } function forum_safe_info($forum) { //unset($forum['moduids']); return $forum; } function forum_filter($forumlist) { foreach ($forumlist as &$val) { unset($val['brief'], $val['announcement'], $val['seo_title'], $val['seo_keywords'], $val['create_date_fmt'], $val['icon_url'], $val['modlist']); } return $forumlist; } function forum_format_url($forum) { global $conf; if (0 == $forum['category']) { // 列表URL $url = url('list-' . $forum['fid'], '', FALSE); } elseif (1 == $forum['category']) { // 频道 $url = url('category-' . $forum['fid'], '', FALSE); } elseif (2 == $forum['category']) { // 单页 $url = url('read-' . trim($forum['brief']), '', FALSE); } if ($conf['url_rewrite_on'] > 1 && $forum['well_alias']) { if (0 == $forum['category'] || 1 == $forum['category']) { $url = url($forum['well_alias'], '', FALSE); } elseif (2 == $forum['category']) { // 单页 $url = ($forum['threads'] && $forum['brief']) ? url($forum['well_alias'] . '-' . trim($forum['brief']), '', FALSE) : url($forum['well_alias'], '', FALSE); } } return $url; } function well_forum_alias() { $forumlist = forum_list_cache(); if (empty($forumlist)) return ''; $key = 'forum-alias'; static $cache = array(); if (isset($cache[$key])) return $cache[$key]; $cache[$key] = array(); foreach ($forumlist as $val) { if ($val['well_alias']) $cache[$key][$val['fid']] = $val['well_alias']; } return array_flip($cache[$key]); } function well_forum_alias_cache() { global $conf; $key = 'forum-alias-cache'; static $cache = array(); // 用静态变量只能在当前 request 生命周期缓存,跨进程需要再加一层缓存:redis/memcached/xcache/apc if (isset($cache[$key])) return $cache[$key]; if ('mysql' == $conf['cache']['type']) { $arr = well_forum_alias(); } else { $arr = cache_get($key); if (NULL === $arr) { $arr = well_forum_alias(); !empty($arr) AND cache_set($key, $arr); } } $cache[$key] = empty($arr) ? '' : $arr; return $cache[$key]; } ?>javascript - check if ajax request is empty - Stack Overflow
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javascript - check if ajax request is empty - Stack Overflow

programmeradmin10浏览0评论

I use the free geocoding API of mapquest

I want to check if the request is sucessfull, but returned no data.

I type "vdfsbvdf54vdfd" (just a silly string) as adress in a form field. I expect an alert like so "Sorry, wrong input". Alert never happens.

This is my code snippet

$.ajax({
     type: "POST",
     url: "``",
     data: { location: ad, maxResults: 1}
     })


 .done(function( response ) {alert(response);
         var geoclng = response.results[0].locations[0].latLng.lng;
        var geoclat = response.results[0].locations[0].latLng.lat;

        if (geoclng=="") {alert("Sorry, wrong input");}

         //now use lon/lat on map etc
                          )}

I tried if (geoclng=="") {alert("Sorry, wrong input");}

also if (response.length=0) {alert("Sorry, wrong input");}

and also if ($.isEmptyObject(response)) {alert("Sorry, wrong input");}

and alert never happens.

If it helps, when I alert the response I get object Object.

Thanks in advance

I use the free geocoding API of mapquest

I want to check if the request is sucessfull, but returned no data.

I type "vdfsbvdf54vdfd" (just a silly string) as adress in a form field. I expect an alert like so "Sorry, wrong input". Alert never happens.

This is my code snippet

$.ajax({
     type: "POST",
     url: "`http://open.mapquestapi./geocoding/v1/address?key=012`",
     data: { location: ad, maxResults: 1}
     })


 .done(function( response ) {alert(response);
         var geoclng = response.results[0].locations[0].latLng.lng;
        var geoclat = response.results[0].locations[0].latLng.lat;

        if (geoclng=="") {alert("Sorry, wrong input");}

         //now use lon/lat on map etc
                          )}

I tried if (geoclng=="") {alert("Sorry, wrong input");}

also if (response.length=0) {alert("Sorry, wrong input");}

and also if ($.isEmptyObject(response)) {alert("Sorry, wrong input");}

and alert never happens.

If it helps, when I alert the response I get object Object.

Thanks in advance

Share Improve this question asked Feb 9, 2014 at 15:54 slevinslevin 3,89621 gold badges76 silver badges140 bronze badges
Add a ment  | 

3 Answers 3

Reset to default 4

Remove the extra single quotes around the url and check for the length of the locations array:

$.ajax({
     type: "POST",
     url: "http://open.mapquestapi./geocoding/v1/address?key=012",
    data: { location: ad, maxResults: 1}
     })
 .done(function( response ) {
     alert(response.results[0].locations.length); //if greater than zero, you have results
     if( response.results[0].locations.length > 0 ){
         var geoclng = response.results[0].locations[0].latLng.lng;
         var geoclat = response.results[0].locations[0].latLng.lat;
         //now use lon/lat on map etc
     } else {
         alert("Sorry, wrong input");
     }
  )}

When you run a call to http://open.mapquestapi./geocoding/v1/address?key=012, it is going to return an object whether or not there were matches. The contents of that object's locations array will be empty is nothing was found.

response.length == 0 or response == "" will evaluate to false since there is always a response returned.

Try adding this one in your ajax code:

$.ajax({
  type: "POST",
  url: "http://open.mapquestapi./geocoding/v1/address?key=012",
  data: { 
     location: ad, maxResults: 1
  }
})

Add this one (just under the data parameter)

success: function (response) {
  if (response == '') {
    alert('Sorry!');
  }
}

This will run on the success event, and will check for the response returned from the server. Then an if else block to test its value.

I would like to forward you to learn more about jQuery Ajax API: http://api.jquery./jquery.ajax/

Try below code to check the success/failed request.

// Assign handlers immediately after making the request,
// and remember the jqxhr object for this request
var jqxhr = $.get("example.php", function() {
    alert("success");
})
.done(function() {
    alert("second success");
})
.fail(function() {
    alert("error");
})
.always(function() {
    alert("finished");
});
// Perform other work here ...
// Set another pletion function for the request above
jqxhr.always(function() {
    alert("second finished");
});

for more detail read more on this link https://api.jquery./jQuery.get/

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