根据输入的字符动态增加输入类型的文本文本框宽度 [英] dynamically increase input type text textbox width according to the characters entering into it
问题描述
我有一个文本框
,用户可以输入任意数量的字符,但是我希望它的宽度相对于输入的字符数动态增加进入它。
我已经做了一个解决方法如下所示,它部分工作,它会动态增加宽度,但不是那么精确,并会隐藏第一个输入一段时间后,因为我的逻辑不好应用于其中。我刚刚给出了17个字符的截断计数以开始增量。
仅当字符数达到文本框末尾时才会开始宽度增量。
更新:
我正在查看所有在字段中输入的字符,而默认情况下,文本box隐藏最左边的字符。
$ b HTML
< input type =textid =txtbox/>
SCRIPT
< pre $ $('#txtbox')。keypress(function(){
var txtWidth = $(this).width();
var cs = $( (cs> 17){
$(this).width(txtWidth + 5);
}
} .val()。length;
if );
我试过这段代码,它工作正常。 / p>
< html>
< head>
< script type =text / javascript>
函数展开(obj){
if(!obj.savesize)obj.savesize = obj.size;
obj.size = Math.max(obj.savesize,obj.value.length);
}
< / script>
< / head>
< body>
< form>
< input type =textsize =5style =font-family:Courier;的onkeyup = 展开(本); >
< / form>
< / body>
< / html>
一定要在文本框中使用单色空间字体,否则大小attr。和字符数量不匹配
I have a textbox
where the user can enter any number of characters, But I want its width to be increased dynamically with respect to the number of characters entered into it.
I have done a workaround shown below and it works partially, it will increase the width dynamically but not so precisely and will hide the first entered characters after a while because of my poor logic applied in it. I've just given a wild cutoff of 17 characters count to start the increment.
It should start the width increment only if the character count reaches the end of textbox.
UPDATE:
I am looking to make visible all the characters entered in the field, whereas in default the text box hides the leftmost characters.
HTML
<input type="text" id="txtbox" />
SCRIPT
$('#txtbox').keypress(function() {
var txtWidth = $(this).width();
var cs = $(this).val().length;
if(cs>17){
$(this).width(txtWidth+5);
}
});
I have tried this code and it works fine.
<html>
<head>
<script type="text/javascript">
function Expand(obj){
if (!obj.savesize) obj.savesize=obj.size;
obj.size=Math.max(obj.savesize,obj.value.length);
}
</script>
</head>
<body>
<form>
<input type="text" size="5" style="font-family:Courier;" onkeyup="Expand(this);">
</form>
</body>
</html>
Be sure to use mono space fonts in text box, otherwise the size attr. and number of characters won't match
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