How do I select an element in jQuery by using a variable for the ID

Question

For example  the following selects a division with id  2    row      body   find   2      How do I do something like this   row id   5  row      body   find row id     The above syntax produces an error  I checked the jQuery documentation and answers here without success

User · Answer

You can do it like this   row id   5  row      body   find     row id

User · Answer

Doing    body   find    is not necessary when looking up by ID  there is no performance gain   Please also note that having an ID that starts with a number is not valid HTML      ID and NAME tokens must begin with a letter   A-Za-z   and may be followed by any number of letters  digits   0-9    hyphens   -    underscores        colons        and periods

User · Answer

row      body   find       row id     More importantly doing the additional body find has no impact on performance  The proper way to do this is simply   row           row id

User · Answer

I don t know much about jQuery  but try this   row id     5   row      body   find row id     Edit  Of course  if the variable is a number  you have to add     to the front   row id   5 row      body   find     row id

User · Answer

The shortest way would be           row id    Limiting the search to the body doesn t have any benefit   Also  you should consider renaming your ids to something more meaningful  and HTML compliant as per Paolo s answer   especially if you have another set of data that needs to be named as well

User · Answer

There are two problems with your code   To find an element by ID you must prefix it with a     You are attempting to pass a Number to the find function when a String is required  passing       5 would fix this as it would convert the 5 to a  5  first

[jquery] How do I select an element in jQuery by using a variable for the ID?

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