jquery textarea 根据内容自动撑开高度
<textarea name="" autoHeight="true" id="remarks" style="width: 100%;border: none;resize: none;" placeholder="内容呈现"></textarea>
//监听浏览器宽度的改变
window.onresize = function(){
changeMargin();
};
function changeMargin(){
$.fn.autoHeight = function(){
this.each(function(){
console.log(this);
autoHeight(this);
$(this).on('keyup', function(){
autoHeight(this);
});
});
function autoHeight(elem){
elem.style.height = 'auto';
elem.scrollTop = 0; //防抖动
elem.style.height = elem.scrollHeight + 'px';
}
}
$('textarea[autoHeight]').autoHeight();
}
changeMargin(); //初始化
