带有Ajax的JavaScript回调函数

只需

getNewENumber

   // receive a function -----------------vfunction getNewENumber( parentENumber, cb_func ){    $.ajax({type: "POST",url: "get_new_e_number.php",data: {project_number: projectNumber, parent_number: parentENumber},  // ------v-------use it as the callback functionsuccess: cb_func, error: function(request,error) {     alert('An error occurred attempting to get new e-number');     // console.log(request, error); }    });}var parentENumber = E1-3;getNewENumber(parentENumber, function( returnValue ){    alert( returnValue );});