驗證碼
type
="text"
value="
" id
="txt"
/>
type
="button"
value
="重新整理"
id="btn"
/>
type
="button"
value
="清除"
id="btn1"
/>
這裡我把函式寫在了一起
function
random
(a,b)
//random為在a和b見隨機生成乙個數
var otxt=document.
getelementbyid
("txt");
var obtn=document.
getelementbyid
("btn");
var obtn1=document.
getelementbyid
("btn1");
//獲取文字框即按鈕
obtn.
onclick
=function()
else
if(d==2)
else
if(d==3)
}//4次迴圈結束
otxt.value=str;
//把得到的str給文字框
} obtn1.
onclick
=function()
//清除按鈕
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