Javascript 选择框的onchange事件
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/10122047/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
onchange event of select box
提问by Priyanka
I am using a selectbox to display the list of "enterpirses" from the database. But the onchange event is not triggering. But when i manually once put the value of querystring then it starts working. I dont understand why it is happening.
我正在使用选择框来显示数据库中的“企业”列表。但是 onchange 事件没有触发。但是当我手动输入查询字符串的值时，它就会开始工作。我不明白为什么会这样。
I am new to javascript and php, kindly suggest me the solution to this.
我是 javascript 和 php 的新手，请建议我解决这个问题。
<select id="enterprisebox" onchange="javascript:valueselect()" >
<option value="-">-</option>
<?php foreach($enterprise as $val) { ?>
<option value="<?php echo $val['customer_id'];?>"><?php echo $val['customer_name']?>
</option>
<? } ?>
</select>
and my javascript is--
而我的 javascript 是——
function valueselect()
{
var i = document.getElementById('enterprisebox');
var p = i.options[i.selectedIndex].value;
//alert(p);
window.location.href = "channelinformation.html?selected="+p;
}
回答by Ravi Jethva
onchange="javascript:valueselect()"replace with onchange="valueselect(this.value);"
onchange="javascript:valueselect()"用。。。来代替 onchange="valueselect(this.value);"
function valueselect(myval)
{
window.location.href = "channelinformation.html?selected="+myaval;
}
You Can Use Directly
可以直接使用
onchange="window.location='channelinformation.html?selected='+myaval"
回答by sbhomra
Make life easier and use jQuery:
让生活更轻松并使用 jQuery：
$(document).ready(function () {
$('#enterprisebox').change(function () {
window.location.href = "channelinformation.html?selected="+ $(this).val();
});
});
回答by GoSmash
Try this,
尝试这个，
<select id="enterprisebox" onchange="javascript:valueselect(this)" >
<option value="-">-</option>
<?php foreach($enterprise as $val) { ?>
<option value="<?php echo $val['customer_id'];?>"><?php echo $val['customer_name']?>
</option>
<? } ?>
</select>
<script>
function valueselect(sel) {
var value = sel.options[sel.selectedIndex].value;
window.location.href = "channelinformation.html?selected="+value;
}
</script>
