jQuery make global variable

Question

How to pass function a href     this  attr  href    value to global a href  make a href  home   var a href           sth a   on  click   function e           a href     this  attr  href               console log a href                output is  home           e preventDefault           console log a href       Output is undefined

User · Answer

You can avoid declaration of global variables by adding them directly to the global object:

(function(global) {

  ...

  global.varName = someValue;

  ...

}(this));

A disadvantage of this method is that global.varName won't exist until that specific line of code is executed, but that can be easily worked around.

You might also consider an application architecture where such globals are held in a closure common to all functions that need them, or as properties of a suitably accessible data storage object.

User · Answer

set the variable on window   window a href   a href

User · Answer

Your code looks fine except the possibility that if the variable declaration is inside a dom read handler then it will not be a global variable    it will be a closure variable  jQuery function          here it is a closure variable     var a href         sth a   on  click   function e           a href     this  attr  href               console log a href                output is  home           e preventDefault               To make the variable global  one solution is to declare the variable in global scope  var a href  jQuery function           sth a   on  click   function e           a href     this  attr  href               console log a href                output is  home           e preventDefault               another is to set the variable as a property of the window object  window a href     this  attr  href     Why console printing undefined  You are getting the output as undefined because even though the variable is declared  you have not initialized it with a value  the value of the variable is set only after the a element is clicked till that time the variable will have the value undefined  If you are not declaring the variable it will throw a ReferenceError

[javascript] jQuery make global variable

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