如何从javascript中的onclick事件返回值 [英] How to return value from onclick event in javascript
本文介绍了如何从javascript中的onclick事件返回值的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
<input type='button' id="btnGroups1" önclick="return fnTabChanges('0')"/>
<input type='button' id="btnGroups2" önclick="return fnTabChanges('1')"/>
<input type='button' id="btnGroups3" önclick="return fnTabChanges('2')"/>
<input type='button' id="btnGroups4" önclick="return fnTabChanges('3')"/>
how to write condition in javascript if third button is click.
if(fnTabChanges()==2)
{
//code
}
是真的.. 。
请帮助.. ???
is it true...
please help..???
推荐答案
尝试以下内容并根据需要进行调整：
Try the following and adapt it if it suits your need:
<html>
<body>
<input type='button' id="button1" value='first button' onclick="clickMe(this)"/>
<input type='button' id="button2" value='second button' onclick="clickMe(this)"/>
<input type='button' id="button3" value='third button' onclick="clickMe(this)"/>
<input type='button' id="button4" value='fourth button' onclick="clickMe(this)"/>
<script>
function clickMe(e){
alert("You have clicked button id = "+e.id+" and button value = "+document.getElementById(e.id).value);
}
</script>
</body>
</html>
hi
试试这段代码..
hi try this code..
<script type="text/javascript">
function fnTabChanges(index) {
if (index == '2')
{ alert(' third button clicked'); }
}
</script>
您可以按如下方式返回值
You can return the value as follows
function fnTabChanges(index) {
//Some condition and code here as per logic
return someValue;
}
现在检索价值
Now to retrieve the value
önclick="var result = fnTabChanges('0');alert(result);"
//变量result有返回值，alert（结果）;被添加到测试目的
希望这有帮助......
// variable result has the return value , alert(result); is added to testing purpose
Hope this helps...
这篇关于如何从javascript中的onclick事件返回值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
