如何检查php数组值是否在js数组中？

Question

首先，我从php array 获得所有values：

<?php
  $user_id = get_current_user_id();
  $userPostsInternal = get_user_meta( $user_id, 'save_post_internal', TRUE );
  $userPostsExternal = get_user_meta( $user_id, 'save_post_external', TRUE )
?>

然后我得到那些arrays 并将它们转换为JS array

var savedInternal = "<?php echo $userPostsInternal; ?>";
var savedExternal = "<?php echo $userPostsExternal; ?>";

savedInternal = savedInternal.split(',');
savedExternal = savedExternal.split(',');

然后我需要检查当前id value 是否在js array 中并相应地继续：

if($.inArray(this.id, savedInternal) !== -1) {
    console.log("yes");               
} else {
    console.log("no");  
}

这是在鼠标悬停在元素上时发生的，如果我在下面放置 id 是正确的，那么它与 this.id 无关

console.log(this.id);

我得到128545，它是正确的。

完整代码：

google.maps.event.addListener(circle, 'mouseover', function(e) {

  <?php
    $user_id = get_current_user_id();
    $userPostsInternal = get_user_meta( $user_id, 'save_post_internal', TRUE );
    $userPostsExternal = get_user_meta( $user_id, 'save_post_external', TRUE )
  ?>

  var savedInternal = "<?php echo $userPostsInternal; ?>";
  var savedExternal = "<?php echo $userPostsExternal; ?>";

  savedInternal = savedInternal.split(',');
  savedExternal = savedExternal.split(',');

  $("#timeSearch").removeClass("fadeIn").addClass("fadeOut");
  $(".infoBox").removeClass("fadeOut").addClass("fadeIn");
  if(this.currSite == "curr" ) {
    var linkGo = this.linkToPost;
    var whatSite = this.currSite;
    if($.inArray(this.id, savedInternal) !== -1) {
      var contentString = '<div class="row infoBox"><div class="col"><p>' + this.site + '</p><hr><h5>'+this.title+'</h5><hr><p><button data-whatSite="'+whatSite+'" data-id="'+this.id+'" type="button" class="btn-site btn btn btn-outline-dark btn-block">Già nella box</button></p><hr><a class="d-block margin-top-20 btn btn-outline-dark btn-block" href="'+linkGo+'">Vedi contenuto</a></div></div>';                  
    } else {
      var contentString = '<div class="row infoBox"><div class="col"><p>' + this.site + '</p><hr><h5>'+this.title+'</h5><hr><p><button data-whatSite="'+whatSite+'" data-id="'+this.id+'" type="button" class="btn-site btn btn btn-dark btn-block">Salva nella box</button></p><hr><a class="d-block margin-top-20 btn btn-outline-dark btn-block" href="'+linkGo+'">Vedi contenuto</a></div></div>';                  
    }
  } else { 
    var linkGo = linkExternal+this.linkToPost;
    var whatSite = this.currSite;
    if($.inArray(this.id, savedExternal) !== -1) {
      var contentString = '<div class="row infoBox"><div class="col"><p>' + this.site + '</p><hr><h5>'+this.title+'</h5><hr><p><button data-whatSite="'+whatSite+'" data-id="'+this.id+'" type="button" class="btn-site btn btn btn-outline-dark btn-block">Già nella box</button></p><hr><a class="d-block margin-top-20 btn btn-outline-dark btn-block" href="'+linkGo+'">Vedi contenuto</a></div></div>';                  
    } else {
      var contentString = '<div class="row infoBox"><div class="col"><p>' + this.site + '</p><hr><h5>'+this.title+'</h5><hr><p><button data-whatSite="'+whatSite+'" data-id="'+this.id+'" type="button" class="btn-site btn btn btn-dark btn-block">Salva nella box</button></p><hr><a class="d-block margin-top-20 btn btn-outline-dark btn-block" href="'+linkGo+'">Vedi contenuto</a></div></div>';                  
    }
  }
  infoWindow = new google.maps.InfoWindow({content: contentString});
  infoWindow.setPosition(this.getCenter());
  infoWindow.open(map);
  btnBoxSave(infoWindow, whatSite);
});

Answer 1

$.inArray(...) 使用严格比较。 从您发布的代码看来，数组包含字符串（它们是使用 .split(...) 创建的，它返回一个字符串数组）以及您正在检查它是否在数组中的值（this.id）是一个数字。

要解决这个问题，请使用：

$.inArray(this.id.toString(), savedInternal) 和 $.inArray(this.id.toString(), savedExternal)