textarea幅固定、自動増高コード;Input高さ固定、自動拡大

1689 ワード

Input高さ固定、自動拡大
 
<input type="text" style="width:60;overflow-x:visible;overflow-y:visible;">

 
 
 
textarea幅固定、自動増高
方法1:
<textarea rows=1 cols=40 style='overflow:scroll;overflow-y:hidden;;overflow-x:hidden' onfocus="window.activeobj=this;this.clock=setInterval(function(){activeobj.style.height=activeobj.scrollHeight+'px';},200);" onblur="clearInterval(this.clock);"></textarea>

方法2:
<script>
var agt = navigator.userAgent.toLowerCase();
var is_op = (agt.indexOf("opera") != -1);
var is_ie = (agt.indexOf("msie") != -1) && document.all && !is_op;
function ResizeTextarea(a,row){
    if(!a){return}
    if(!row)
        row=5;
    var b=a.value.split("
"); var c=is_ie?1:0; c+=b.length; var d=a.cols; if(d<=20){d=40} for(var e=0;e<b.length;e++){ if(b[e].length>=d){ c+=Math.ceil(b[e].length/d) } } c=Math.max(c,row); if(c!=a.rows){ a.rows=c; } } </script> <textarea style="overflow: hidden; font-family: Verdana,Arial; font-style: normal; font-size: 13px; line-height: normal; " rows="4" cols="30" onfocus="javascript:ResizeTextarea(this,4);" onclick="javascript:ResizeTextarea(this,4);" onkeyup="javascript:ResizeTextarea(this,4);"></textarea>