wx:for and wx:for-item small program development

This time I will bring you some precautions when developing wx:for and wx:for-item small programs. The following is a practical case. Let’s take a look.

wx:for="{{list}}"is used to loop through the array, and list is the array namewx:for-item="items"That is

used to define the variables of each element in a loop process. If it is a one-dimensional array, it is looped out as follows:

 {{index}} {{item.name}} 

In the above code, item is the alias of list.

If it is a two-dimensional or even multi-dimensional array, loop as follows:

 {{item.id}}  {{items.name}}{{item.account}}   for (var i = 0 ; i < list.length; i++) { var xxx = list[i]; }

is equivalent to

Remember: wx:for is a loop array, wx:for-item That is to assign an alias to the list

The following are some incorrect uses, please use them with caution:

1. Use wx:for-item directly, which will not loop out the list

 {{index}} {{item.name}} 

2. Use wx:for-item with caution in sub-loops

 {{item.id}}  {{items.name}}{{items.account}} 

The correct usage of wx:for and wx:for-item in WeChat applet

wx:for="{{ list}}" is used to loop the array, and list is the array name wx:for-item="items" which is used to define the variable of each element during the loop

If it is a one-dimensional array, Loop out as follows:

 {{index}} {{item.name}} 

In the above code, item is the alias of list.

If it is a two-dimensional or even multi-dimensional array, loop as follows:

 {{item.id}}  {{items.name}}{{item.account}}   for (var i = 0 ; i < list.length; i++) { var xxx = list[i]; }

is equivalent to

Remember: wx:for is a loop array, wx:for-item That is to assign an alias to the list

The following are some incorrect uses, please use them with caution:

1. Use wx:for-item directly, which will not loop out the list

 {{index}} {{item.name}} 

2. Use wx:for-item with caution in sub-loops

 {{item.id}}  {{items.name}}{{items.account}} 

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website!

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