jQuery：将jquery变量附加到类名

Question

My code

   $( ".attachPo" ).click(function() {
        alert($(this).attr('id'))   // prints 59
        var id = $(this).attr('id');
        $( '#attachPoForm_"+id+"').show();  // id name = attachPoForm_59
    });

but which does not work for me , what is the correct vay of appending jQuesy variable to a class or id name

Answer 1

Your quotes aren't quite right. Change to:

$( '#attachPoForm_'+id).show();

This isn't a "jQuery variable", it's just simple Javascript variable and string concatenation.

Answer 2

您的选择器正在寻找ID为（字面意义上） #attachPoForm_"+id+"的元素，我认为您的意思是：

$( '#attachPoForm_'+id).show();

Answer 3

Try this

$( ".attachPo" ).click(function() {
    var id = this.id
    $( '#attachPoForm_'+id).show();  // id name = attachPoForm_59
    //                ^^^^ Fixed the quotes here 
});

Answer 4

 $( ".attachPo" ).click(function() {
       $( '#attachPoForm_'+ $(this).attr('id')).show();  //set  id name = attachPoForm_59
    });

Answer 5

A mistake at

    $( '#attachPoForm_"+id+"').show();  // id name = attachPoForm_59

should be

    $( '#attachPoForm_'+id+'').show();  // id name = attachPoForm_59

Answer 6

Try to use this.id like,

$( ".attachPo" ).click(function() {
    var id=this.id;
    alert(id);
    $("#attachPoForm_"+id).show();  // id name = attachPoForm_59
});