一片空白，大神幫我看看哪里寫(xiě)錯(cuò)了
function?add1(x,y)
????{??
????????if(x>y)
????????{
???????????return?x;
????????}
????????else?if(x<y)
????????{
???????????return?y;
????????}
????}????
??document.write("?5?和?4?的較大值是:"+add1(5,4)+<br>);
??document.write("?6?和?3?的較大值是:"+add1(6,3));提交一片空白，代碼哪里寫(xiě)錯(cuò)了求指正。
2017-01-13
不是 <br> ?而是 “<br>”。
<br> 是字符串的一部分。一旦字符串中有了<br>，就會(huì)換行
2017-01-13
"<br/>"
2017-01-13
function?add1(x,y)
????{??
????????if(x>y)
????????{
???????????return?x;
????????}
????????else
????????{
???????????return?y;
????????}
????}????
??document.write("?5?和?4?的較大值是:"+add1(5,4)+'<br>');
??document.write("?6?和?3?的較大值是:"+add1(6,3));
2017-01-13
下面不要寫(xiě)else if,寫(xiě)else就行了