Textarea自适应高度 JS实现，兼容IE6\7\8\9\10\11

<!DOCTYPE html>

<html>

<head>

<title>autoresizing textarea</title>

<style type="text/css">

textarea {

    border: 0 none white;

    overflow: hidden;

    padding: 0;

    outline: none;

    background-color: #FFFFFF;

    resize: none;

}

</style>

<script type="text/javascript">

var observe;

if (window.attachEvent) {

    observe = function (element, event, handler) {

        element.attachEvent('on'+event, handler);

    };

}

else {

    observe = function (element, event, handler) {

        element.addEventListener(event, handler, false);

    };

}

function init () {

    var text = document.getElementById('text');

    function resize () {

        text.style.height = 'auto';

        text.style.height = text.scrollHeight+'px';

    }

    /* 0-timeout to get the already changed text */

    function delayedResize () {

        window.setTimeout(resize, 0);

    }

    observe(text, 'change',  resize);

    observe(text, 'cut',     delayedResize);

    observe(text, 'paste',   delayedResize);

    observe(text, 'drop',    delayedResize);

    observe(text, 'keydown', delayedResize);

    text.focus();

    text.select();

    resize();

}

</script>

</head>

<body onload="init();">

<textarea cols="40" rows="1" style="height:25px;" id="text"></textarea>

</body>

</html>
巴特西

Textarea自适应高度 JS实现，兼容IE6\7\8\9\10\11

最新文章

热门文章
