最后的分数了,在线等答复,立刻给分.
请问如何用html或jsp可以做到在点击列表框和按钮时,使列表框中选择的内容和按钮的名字出现在textarea中.(我感觉只能用JSP实现,不知道对不对)
html代码如下,请高手帮写几句代码.谢谢先<html>
<head>
<title>aa</title>
</head>
<body><form action="list.jsp" method="POST">Field
<br>
<select name="field" multiple>
<option value="hk">Hong Kong</option>
<option value="tw" >Taiwan</option>
<option value="cn">China</option>
<option value="us">United States</option>
<option value="ca">Canada</option>
</select> <br>
<input type="Button" value=">">
<input type="Button" value="<">
<input type="Button" value=">=">
<input type="Button" value="<=">
<input type="Button" value="=">
<input type="Button" value="_" > <br>
<input type="Button" value="and">
<input type="Button" value="or">
<input type="Button" value="not">
<input type="Button" value="is">
<input type="Button" value="%">
<br>SQL
<textarea name="comments" cols="40" rows="4">
</textarea> <br>
<input type="Submit" value="应用">
<input type="Reset" value="置空"></form> </body>
</html>
请问如何用html或jsp可以做到在点击列表框和按钮时,使列表框中选择的内容和按钮的名字出现在textarea中.(我感觉只能用JSP实现,不知道对不对)
html代码如下,请高手帮写几句代码.谢谢先<html>
<head>
<title>aa</title>
</head>
<body><form action="list.jsp" method="POST">Field
<br>
<select name="field" multiple>
<option value="hk">Hong Kong</option>
<option value="tw" >Taiwan</option>
<option value="cn">China</option>
<option value="us">United States</option>
<option value="ca">Canada</option>
</select> <br>
<input type="Button" value=">">
<input type="Button" value="<">
<input type="Button" value=">=">
<input type="Button" value="<=">
<input type="Button" value="=">
<input type="Button" value="_" > <br>
<input type="Button" value="and">
<input type="Button" value="or">
<input type="Button" value="not">
<input type="Button" value="is">
<input type="Button" value="%">
<br>SQL
<textarea name="comments" cols="40" rows="4">
</textarea> <br>
<input type="Submit" value="应用">
<input type="Reset" value="置空"></form> </body>
</html>
解决方案 »
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<head>
<script language="javascript">
function getname(initValue){
var s="";
if(document.form1.comments.value != ""){
s = document.form1.comments.value;
}
s += initValue +" ";
document.form1.comments.value = s;
}
function clearvlue(){
document.form1.comments.value = "";
}
</script>
<title>aa</title>
</head>
<body><form name="form1" action="list.jsp" method="POST">Field
<br>
<select name="field" multiple onchange="getname(this.value);">
<option value="hk">Hong Kong</option>
<option value="tw" >Taiwan</option>
<option value="cn">China</option>
<option value="us">United States</option>
<option value="ca">Canada</option>
</select> <br>
<input type="Button" value=">" onclick="getname(this.value);">
<input type="Button" value="<" onclick="getname(this.value);">
<input type="Button" value=">=" onclick="getname(this.value);">
<input type="Button" value="<=" onclick="getname(this.value);">
<input type="Button" value="=" onclick="getname(this.value);">
<input type="Button" value="_" onclick="getname(this.value);"> <br>
<input type="Button" value="and" onclick="getname(this.value);">
<input type="Button" value="or" onclick="getname(this.value);">
<input type="Button" value="not" onclick="getname(this.value);">
<input type="Button" value="is" onclick="getname(this.value);">
<input type="Button" value="%" onclick="getname(this.value);">
<br>SQL
<textarea name="comments" cols="40" rows="4">
</textarea> <br>
<input type="Submit" value="应用">
<input type="button" value="置空" onclick="clearvlue()"></form> </body>
</html>
<head>
<title>aa</title>
</head>
<body><form action="list.jsp" method="POST">Field
<br>
<select name="field" multiple onChange="document.all.comments.innerHTML+=this.options[this.selectedIndex].innerHTML;">
<option value="hk">Hong Kong</option>
<option value="tw" >Taiwan</option>
<option value="cn">China</option>
<option value="us">United States</option>
<option value="ca">Canada</option>
</select> <br>
<input type="Button" value=">" onClick="document.all.comments.innerHTML+=this.value;">
<input type="Button" value="<">
<input type="Button" value=">=">
<input type="Button" value="<=">
<input type="Button" value="=">
<input type="Button" value="_" > <br>
<input type="Button" value="and">
<input type="Button" value="or">
<input type="Button" value="not">
<input type="Button" value="is">
<input type="Button" value="%">
<br>SQL
<textarea name="comments" cols="40" rows="4">
</textarea> <br>
<input type="Submit" value="应用">
<input type="Reset" value="置空"></form> </body>
</html>---------------------------------------------------
列表框 和 第一个 按钮帮你写好了
其他按钮 copy 第一个 就 ok了
<script language="javascript">
function add(){
var select = document.getElementById("select");
for(var i = 0; i < select.options.length; i++){
if (select.options[i].selected){
document.getElementById("textarea").value += select.options[i].text + "\r\n";
}
}
}
</script><br>
<select name="field" id="select" multiple width=30%>
<option value="hk">Hong Kong</option>
<option value="tw" >Taiwan</option>
<option value="cn">China</option>
<option value="us">United States</option>
<option value="ca">Canada</option>
</select> <br>
<input type="Button" value=">" onclick="add()">
<input type="Button" value="<">
<input type="Button" value=">=">
<input type="Button" value="<=">
<input type="Button" value="=">
<input type="Button" value="_" > <br>
<input type="Button" value="and">
<input type="Button" value="or">
<input type="Button" value="not">
<input type="Button" value="is">
<input type="Button" value="%">
<br>SQL
<textarea id="textarea" name="comments" cols="40" rows="4">
</textarea> <br>
<input type="Submit" value="应用">
<input type="Reset" value="置空">
我这样做了,点击后没有反应.是我那里做错了吗?