div仿textarea

CSS代码：

.test_box {
    width: 400px;
    min-height: 120px;
    max-height: 300px;
    _height: 120px;
    margin-left: auto;
    margin-right: auto;
    padding: 3px;
    outline: 0;
    border: 1px solid #a0b3d6;
    font-size: 12px;
    word-wrap: break-word;
    overflow-x: hidden;
    overflow-y: auto;
    -webkit-user-modify: read-write-plaintext-only;
}

HTML代码：

<div class="test_box" contenteditable="true"><br /></div>

JS代码：

if (typeof document.webkitHidden == "undefined") {
    // 非chrome浏览器阻止粘贴
    box.onpaste = function() {
        return false;
    }
}