我有一个输入字段,它有一些固定的宽度。 (例如:200px)和占位符文字有更多的字母。
如何根据占位符文本/宽度动态更改输入字段的宽度?
答案 0 :(得分:0)
将function sum_cr(that) {
alert($(that).parent('td').prev('td').find('input').val());
}
设为Run code snippetExpand snippet
I want to alert the value of input under 2nd td (ie; headers="ACNO" ) when onblur occurs at input under 3rd td(ie;headers="CREDIT") . So I wrote the below javascript function sum_cr() as
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
<tbody>
<tr>
<td headers="DAYDT">
<label for="f01_0050" class="u-VisuallyHidden"> </label>
<input name="f01" value="28-05-2018" type="text">
</td>
<td headers="ACNO">
<label for="f03_0050" class="u-VisuallyHidden"> </label>
<input name="f03" value="1413/4" class="accno" type="text">
</td>
<td headers="CREDIT">
<label for="f04_0050" class="u-VisuallyHidden"></label>
<input name="f04" value="100" class="cr_amt" onblur="sum_cr(this);" id="f04_0050" type="text">
</td>
<td headers="FINE AMT">
<label for="f06_0050" class="u-VisuallyHidden"> </label>
<input name="f06" value="" id="f06_0050" type="text">
</td>
</tr>
</tbody>
</table>
size
答案 1 :(得分:0)
你可以使用javascript或jquery来实现,获取占位符的长度,然后将其分配给输入大小; JS代码:
<input placeholder="I am a long text...I am a long text...I am a long text "/>
,或者 的 JQuery的:强>
usr/lib/python2.7/site-packages
答案 2 :(得分:0)
以下是您如何操作的链接 - https://jsfiddle.net/4s03razg/
<div>
<script>
var prevLen = 50;
window.resizeBox = function() {
var elem = document.getElementById("resizable-input");
if(elem.value && elem.value.length > 5) {
prevLen += 10;
elem.style.width = prevLen + "px";
}
};
function initializeBox() {
var elem = document.getElementById("resizable-input");
elem.style.width = prevLen + "px";
}
initializeBox();
</script>
<input id="resizable-input" type="text" onkeypress="resizeBox()"/>
</div>
这只是一个例子。您必须使用正确的数字和事件来触发调整大小。你最好使用&#39;这个&#39;来获取元素。在方法调用事件中,我认为。