为什么我按照提示来的复制代码都不能运行啊
qq_深海鱼肝油_0
2018-07-24 12:33
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>无标题文档</title>
</head>
<body>
<form>
请选择你爱好:<br>
<input type="checkbox" name="hobby" id="hobby1"> 音乐
<input type="checkbox" name="hobby" id="hobby2"> 登山
<input type="checkbox" name="hobby" id="hobby3"> 游泳
<input type="checkbox" name="hobby" id="hobby4"> 阅读
<input type="checkbox" name="hobby" id="hobby5"> 打球
<input type="checkbox" name="hobby" id="hobby6"> 跑步 <br>
<input type="button" value = "全选" onclick = "checkall();">
<input type="button" value = "全不选" onclick = "clearall();">
<p>请输入您要选择爱好的序号，序号为1-6:</p>
<input id="wb" name="wb" type="text" >
<input name="ok" type="button" value="确定" onclick = "checkone();">
</form>
<script type="text/javascript">
function checkall(){
var hobby = document.getElementsByTagName("input");
for(i = 0;i < hobby.length;i++){
if(hobby[i].type == "checkbox"){
hobby[i].checked = true; }
}
}
function clearall(){
var hobby = document.getElementsByName("hobby");
for(i = 0;i < hobby.length;i++){
hobby[i].checked = false;}
}
function checkone(){
var j=document.getElementById("wb").value;
var hobby = document.getElementById("hobby"+j);
hobby.checked = true; }
</script>
</body>
</html>
3回答
-
- 慕粉2274024
- 2018-07-31 16:55:53
试过了，把你的代码复制过来完全可以运行。
-
- 加了椰子汁的冰
- 2018-07-25 16:28:38
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>无标题文档</title>
</head>
<body>
<form>
请选择你爱好:<br/>
<input type="checkbox" name="hobby" id="hobby1"> 音乐
<input type="checkbox" name="hobby" id="hobby2"> 登山
<br/>
<input type="checkbox" name="hobby" id="hobby3"> 游泳
<input type="checkbox" name="hobby" id="hobby4"> 阅读
<br/>
<input type="checkbox" name="hobby" id="hobby5"> 打球
<input type="checkbox" name="hobby" id="hobby6"> 跑步
<br/>
<input type="button" value = "全选" onclick = "checkall();">
<input type="button" value = "全不选" onclick = "clearall();">
<p>请输入您要选择爱好的序号，序号为1-6:</p>
<input id="wb" name="wb" type="text" >
<input name="ok" type="button" value="确定" onclick = "checkone();">
</form>
<script type="text/javascript">
function checkall(){
var hobby = document.getElementsByTagName("input");
// 任务1
for(var i = 0; i<hobby.length;i++){
if(hobby[i].type == "checkbox"){
hobby[i].checked = true ;
}
}
}
function clearall(){
var hobby = document.getElementsByName("hobby");
// 任务2
for(var i = 0; i<hobby.length;i++){
hobby[i].checked = false ;
}
}
function checkone(){
var j=document.getElementById("wb").value;
// 任务3
document.getElementsByName("hobby")[j-1].checked = true ;
}
</script>
</body>
</html>
-
- 慕慕912124
- 2018-07-25 10:00:51
去参考同学代码
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