这是我的HTML网页
< script> 函数set() { document.getElementById(txt)。value ++; } < / script> < input id =txttype =textonchange =javascript:alert('txt changed');值= 0 > < br /> < input type =buttononclick =set()value =设置数据/>当我按下按钮时,文本框的值正在改变,onchange事件不会触发, ,但是当我在文本框中手动输入值时,它会触发onchange。
我只需要在数据更改时调用JavaScript函数点击一个按钮的文本框。
您能帮忙吗?
解决方案通过代码更改值后,您可以使用 document.getElementById(txt)。onchange(); 从代码中触发onchange
UPDATE
更改您的设置功能以获取文本框的ID
函数集(textboxid) { var tb = document.getElementById(textboxid); tb.value ++; tb.onchange(); }
This is my HTML page
<script> function set() { document.getElementById("txt").value++; } </script> <input id="txt" type="text" onchange="javascript:alert('txt changed');" value="0"> <br/> <input type="button" onclick="set()" value="Set Data"/>When I press the button, the text box value is changing, and the onchange event is not firing, but when I enter value manually in the textbox, it is firing the onchange.
All I want is to call a JavaScript function when data is changed in the textbox when a button is clicked.
Can you help?
解决方案you can fire onchange from code using document.getElementById("txt").onchange(); after the changing the value through code
UPDATE
change your set function to take the id of the text box
function set(textboxid) { var tb = document.getElementById(textboxid); tb.value++; tb.onchange(); }
更多推荐
当数据分配给输入文本框时,输入文本框onchange不会触发
发布评论