Question

I have a function, this function receive a string in argument. The content of this variable is HTML code. I’d like know number of HTML element with the class .myClass

function MyTest(myData){
    //get how many element with .myClass are in myData
}

Thanks,

Answer 1

This is pretty much jQuery 101.

function myTest(myData) {    
  return $( '.myClass', myData ).length;
}

// Usage:
myTest( '<p><span class="myClass">Hello</span> <span class="myClass">world</span></p>' );
// => 2