前端js调用js

//A
function show_A () 
{ 
console.log("show_A");
}



//B 
//程序代码 
new_element=document.createElement("script"); 
new_element.setAttribute("type","text/javascript"); 
new_element.setAttribute("src","js/a.js"); 
document.body.appendChild(new_element); 
//window.loading()
window.onload=function(){
show_B ();
}
	function show_B () 
{ 
show_A(); 
console.log("show_B");
} 


//index.html-----看打印结果就明白了