首頁猿問我的代碼找不到錯(cuò)誤

我的代碼找不到錯(cuò)誤

JavaScript

QQJumper 2016-08-11 16:16:53

<!DOCTYPE html><html>?<head>? <title> 事件</title> ?? <script type="text/javascript">?? function count(){????? var a=document.getElementById("txt1").value;????? var b=document.getElementById("txt2").value;????? var c=document.getElementById("select").value;????? var d;????? function count(){????????? switch (c){???????????? ?????????????? case "+":?????????????????? d = a + b;?????????????????? break;????????????? case "-":?????????????????? d = a - b;?????????????????? break;????????????? case "*":?????????????????? d = a * b;?????????????????? break;????????????? case "/":?????????????????? d = a / b;?????????????????? break;????????????? }???????? ?????????? document.getElementById("frult").value= d;???????? ?????? }???? ???? //獲取第一個(gè)輸入框的值?? ?//獲取第二個(gè)輸入框的值?? ?//獲取選擇框的值?? ?//獲取通過下拉框來選擇的值來改變加減乘除的運(yùn)算法則??? //設(shè)置結(jié)果輸入框的值 ?? ??? }? </script> ?</head> ?<body>?? <input type='text' id='txt1' /> ?? <select id='select'>?? ??? ?<option value='+'>+</option>?? ??? ?<option value="-">-</option>?? ??? ?<option value="*">*</option>?? ??? ?<option value="/">/</option>?? </select>?? <input type='text' id='txt2' /> ?? <input type='button' value=' = '? onlick="count()"/>  ?? <input type='text' id='fruit' />? ??</body></html>

查看完整描述

3 回答

super_mb

TA貢獻(xiàn)101條經(jīng)驗(yàn) 獲得超107個(gè)贊

document.getElementById("frult").value=?d;

這句的 frult 應(yīng)該是 fruit 吧

1 反對回復(fù) 2016-08-11

qq_落_5

TA貢獻(xiàn)20條經(jīng)驗(yàn) 獲得超5個(gè)贊

id錯(cuò)了 i

反對回復(fù) 2016-08-11

慕粉3456840

TA貢獻(xiàn)16條經(jīng)驗(yàn) 獲得超4個(gè)贊

<!DOCTYPE html>
<html>
?<head>
? <title> 事件</title> ?
? <script type="text/javascript">
?? function count(){
????? var a=parseInt(document.getElementById("txt1").value);
????? var b=parseInt(document.getElementById("txt2").value);
????? var c=document.getElementById("select").value;
????? var d;
???? ?
????????? switch (c){
???????????? ?
????????????? case "+":
?????????????????? d = a+b;
?????????????????? break;
????????????? case "-":
?????????????????? d = a-b;
?????????????????? break;
????????????? case "*":
?????????????????? d = a*b;
?????????????????? break;
????????????? case "/":
?????????????????? d = a/b;
?????????????????? break;
??????????? } ?
????????? document.getElementById("fruit").value= d;
???????? ?
????? }
? </script>
?</head>
?<body>
?? <input type='text' id='txt1' />
?? <select id='select'>
??????? <option value='+'>+</option>
??????? <option value="-">-</option>
??????? <option value="*">*</option>
??????? <option value="/">/</option>
?? </select>
?? <input type='text' id='txt2' />
?? <input type='button' value=' = '? onclick="count()"/> 
?? <input type='text' id='fruit' />? ?
?</body>
</html>