foreach相当于在jQuery中的PHP？ [英] foreach equivalent of php in jquery?

问题描述

在PHP中是否有一个在JQuery中的foreach代码？
我在php中有一个代码，就像

 <？php foreach（$ viewfields as $ viewfield）：？ > 
 if（<？php echo $ viewfield ['Attribute'] ['required'];？>=='true'）{
 $（< span class ='req '&';< / span>）。appendTo（＃fb_contentarea_col1down21＃label<？php echo $ viewfield ['Attribute'] ['sequence_no']？>）; 
 
 
 $ b $ if（<？= $ viewfield ['Attribute'] ['type'];？> =='text'||<？= $视场[ '属性'] [ '类型'];？> == '日期' ||< = $视场[ '属性'] [ '类型'];？> == '编号'）{ 
 $（< input id = input< = $ viewfield ['Attribute'] ['sequence_no'];？> type ='text'style ='width：<？= $ viewfield [属性'] ['size'];？> px'data-attr =<？= $ viewfield ['Attribute'] ['type'];？>>< / input>< br> ）.appendTo（＃fb_contentarea_col1down21＃<？= $ viewfield ['Attribute'] ['sequence_no'];？>）; 
 
 
 $ b其他if（<？= $ viewfield ['Attribute'] ['type'];？> =='textarea'）{
 $（< textarea style ='width：<？= $ viewfield ['Attribute'] ['size'];？> px'data-attr =< = = $ viewfield ['Attribute'] [ 'type'];？> id = input<？= $ viewfield ['Attribute'] ['sequence_no'];？>>< / textarea>< br>）。appendTo（＃fb_contentarea_col1down21＃ < = $视场[ '属性'] [ 'sequence_no'];？>中）; 
 
 
 
 
 
 $ b 
在Jquery中是否存在任何等价的foreach ？我怎么能在jQuery中完成同样的功能？
 
 
 
编辑1：
 
 
 
我认为它的工作，但我得到一个错误。  
 
 
  for（<？= $ viewfield;？> in< ;? = $ viewfields;？>）{
 
 if（<？= $ viewfield ['Attribute'] ['required'];？>=='true'）{
 $（< span class ='req'>< em> *< / em>< / span>）。appendTo（＃fb_contentarea_col1down21＃label<？php echo $ viewfield ['Attribute' ] [ 'sequence_no']>？）; $'
 
 
 if（<？= $ viewfield ['Attribute'] ['type'];？> =='text'||<？= $ viewfield [属性'] ['type'];？> =='date'||<？= $ viewfield ['Attribute'] ['type'];？> =='number'）{
 $（< input id = input<？= $ viewfield ['Attribute'] ['sequence_no'];？> type ='text'style ='width：<？= $ viewfield ['Attribute'] [ 'size'];？> px'data-attr =<？= $ viewfield ['Attribute'] ['type'];？>>< / input>< br>）。appendTo ＃fb_contentarea_col1down21＃<？= $ viewfield ['Attribute'] ['sequence_no'];？>）; 
 
 $ b $ else if（<？= $ viewfield ['Attribute'] ['type'];？> =='textarea'）{
 $（ < textarea style ='width：<？= $ viewfield ['Attribute'] ['size'];？> px'data-attr =<？= $ viewfield ['Attribute'] ['type'] ;< / textarea>< br>）。appendTo（＃fb_contentarea_col1down21＃<？= $视场[ '属性'] [ 'sequence_no'];？>中）; 
 
 code 
 
 
 
 
 
 
 
 
 
 
 $ b $ p 
 
 
 $ b 
错误消息：
 
 
语法错误
（在数组中）
 
 
有人可以帮我吗？  
 
解决方案
  $。每个函数都是类似的。
 
 
 
它允许您使用回调函数遍历每个项目的数组：
  var arr = [one，two，three，four，five]; 
 
 $ b $ .each（arr，function（index，value）{
 //使用值
}）; 
  
如果你想打破这个循环，你可以用 return false; 或者如果您只想跳过一个迭代（继续），您返回true;  
 
Is there a foreach code in JQuery as in PHP?
I have a code in php,like
<?php foreach ($viewfields as $viewfield): ?>       
if("<?php echo $viewfield['Attribute']['required'];?>"=='true'){
       $("<span class='req'><em> * </em></span>").appendTo("#fb_contentarea_col1down21 #label<?php echo $viewfield['Attribute']['sequence_no']?>");
   }


   if(<?=$viewfield['Attribute']['type'];?>=='text'||<?=$viewfield['Attribute']['type'];?>=='date'||<?=$viewfield['Attribute']['type'];?>=='number'){ 
       $("<input id=input<?=$viewfield['Attribute']['sequence_no'];?> type= 'text' style= 'width:<?=$viewfield['Attribute']['size'];?>px' data-attr=<?=$viewfield['Attribute']['type'];?> ></input><br>").appendTo("#fb_contentarea_col1down21 #<?=$viewfield['Attribute']['sequence_no'];?>");
   }


   else if(<?=$viewfield['Attribute']['type'];?>=='textarea'){
       $("<textarea style= 'width:<?=$viewfield['Attribute']['size'];?>px' data-attr=<?=$viewfield['Attribute']['type'];?> id=input<?=$viewfield['Attribute']['sequence_no'];?>></textarea><br>").appendTo("#fb_contentarea_col1down21 #<?=$viewfield['Attribute']['sequence_no'];?>");
}
Is there any equivalent of foreach in Jquery? How can I accomplish this same functioality in jQuery?

EDIT 1:

I thought it worked but I get an error. The code and the error message is given below.
for(<?=$viewfield;?> in <?=$viewfields;?>){

 if("<?=$viewfield['Attribute']['required'];?>"=='true'){
            $("<span class='req'><em> * </em></span>").appendTo("#fb_contentarea_col1down21 #label<?php echo $viewfield['Attribute']['sequence_no']?>");
 }

 if(<?=$viewfield['Attribute']['type'];?>=='text'||<?=$viewfield['Attribute']['type'];?>=='date'||<?=$viewfield['Attribute']['type'];?>=='number'){ 
            $("<input id=input<?=$viewfield['Attribute']['sequence_no'];?> type= 'text' style= 'width:<?=$viewfield['Attribute']['size'];?>px' data-attr=<?=$viewfield['Attribute']['type'];?> ></input><br>").appendTo("#fb_contentarea_col1down21 #<?=$viewfield['Attribute']['sequence_no'];?>");
 }

 else if(<?=$viewfield['Attribute']['type'];?>=='textarea'){
            $("<textarea style= 'width:<?=$viewfield['Attribute']['size'];?>px' data-attr=<?=$viewfield['Attribute']['type'];?> id=input<?=$viewfield['Attribute']['sequence_no'];?>></textarea><br>").appendTo("#fb_contentarea_col1down21 #<?=$viewfield['Attribute']['sequence_no'];?>");
 }
}

Error message:

syntax error
 for( in Array)

Can someone help me..
解决方案
The $.each function is similar.

It allows you to iterate arrays using a callback function where you have access to each item:
var arr = [ "one", "two", "three", "four", "five" ];


$.each(arr, function(index, value) {
  // work with value
});
Maybe is useful to know, if you want to break the loop, you can do it with return false; or if you want to skip only one iteration (continue), you return true;

                        
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