datepicker can be executed at $(document). Ready but error is reported in window.onload ()
Uncaught TypeError: $(.). Datepicker is not a function
related codes
 < script type= "text/javascript" > 
 $(document) .ready (function () {
 alert ("document"); 
 $("- sharpdate"). Datepicker ({
    yearRange: "-70:+0" 
});});
 window.onload= function () {
 alert ("window") 
 $("- sharpdate"). Datepicker ({
    yearRange: "-70:+0" 
});} 
 < / script > 
