What is the difference between jquery size() and length

The difference between jquery size() and length: 1. Length is an attribute. You can only use length to calculate the character length; 2. [size()] method in jQuery, used to get the number of elements, starting from 1 Calculate the array length.

The difference between jquery size() and length:

● length is an attribute

● size () is the method

● To calculate the character length, you can only use length

If you want to get the number of elements, the effect of both is the same, and the value obtained by

$("img").length 
$("img").size()

is the same Yes, but if you want to get the length of a string, you have to use length. For example,

$("#text").val().length

jQuery length and size() are different. From the above, we can see that size() is called, and the length attribute Implemented, and after jquery 1.8, length replaced size(); because length does not need to return a function call, it is better.

size() is a method in jQuery, used to get the number of elements and calculate the array length starting from 1. Only length can be used to calculate character length. For example:

$("#dataRuleListtbody").find(":checkbox").size();
$("#dataRuleListtbody").find(":checkbox").length

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