我正在使用bootstrap-wysihtml5,因此从textarea输入字段接收输入。为了改善用户体验,我想自动调整textarea以适合输入文本。
在this Gist代码的帮助下,我可以在点击时调整textarea的大小,但不会加载。
这是我目前的实施:
var container = $("#container");
var textarea = $("<textarea />");
textarea.attr("style", "width: 90%;");
container.append(textarea);
textarea.wysihtml5({
"font-styles": false,
"emphasis": false,
"lists": false,
"html": false,
"link": false,
"image": false,
"color": false
});
textarea.val("<div>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</div<div><br></div><div>Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur..</div");
textarea.observe("load", function () {
var $iframe = $(this.composer.iframe);
var $body = $(this.composer.element); // <body marginwidth="0" marginheight="0" contenteditable="true" class="wysihtml5-editor" spellcheck="true" style="color: rgb(85, 85, 85); cursor: auto; font-family: HelveticaNeue-Light, 'Helvetica Neue Light', 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; line-height: 20px; letter-spacing: normal; text-align: start; text-decoration: none; text-indent: 0px; text-rendering: auto; word-break: normal; word-wrap: break-word; word-spacing: 0px; min-height: 0px; overflow: hidden; background-color: rgb(255, 255, 255);"><div>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.<br></div><div>Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur..</div></body>
$body.css({
'min-height': 0,
'line-height': '20px',
'overflow': 'hidden',
})
var scrollHeightInit = $body[0].scrollHeight; // 3860
var bodyHeightInit = $body.height(); // 3860
var heightInit = Math.min(scrollHeightInit, bodyHeightInit); // 3860
$iframe.height(heightInit);
$body.bind('keypress keyup keydown paste change focus blur', function(e) {
var scrollHeight = $body[0].scrollHeight; // 150
var bodyHeight = $body.height(); // 60
var height = Math.min(scrollHeight, bodyHeight); // 60
$iframe.height(height);
});
});
正如您所看到的,height
被评估为 60 ,这是正确的。但是heightInit
被评估为 3860 ,这是不正确的。我该如何解决这个问题?
答案 0 :(得分:5)
bootstrap-wysihtml5
有一个events
属性;其中一个事件是load
事件。
要在加载时调整textarea的大小,您需要做的就是在
load
配置函数中声明textarea.wysihtml5
事件;
见下面的代码:
<强>代码强>
textarea.wysihtml5({
...other properties....,
"events": {
"load": function() {
console.log("Loaded!");
var $iframe = $(this.composer.iframe);
var $body = $(this.composer.element);
$body.css({
'min-height': 0,
'line-height': '20px',
'overflow': 'hidden',
});
var scrollHeightInit = $body[0].scrollHeight;
console.log("scrollHeightInit", scrollHeightInit);
var bodyHeightInit = $body.height();
console.log("bodyHeightInit", bodyHeightInit);
var heightInit = Math.min(scrollHeightInit, bodyHeightInit);
$iframe.height(heightInit);
}
}
});
答案 1 :(得分:1)
Manube的回答对我不起作用。我不知道为什么。我从$body
和$iframe
获得了控制台日志。但未能设置$body.css
和$iframe.height()
。我改为采用了document.getElementsByClassName('wysihtml5-sandbox')[0].setAttribute()
。然后它奏效了。更改事件的自动调整大小iframe的UX虽然不好。
Manube的答案对我帮助很大,而且非常简单。谢谢!
这是我使用的代码:
$('#edit').wysihtml5({
toolbar:{ "fa": true, "image": false, "html": false },
locale: 'zh-TW',
name: 't-iframe',
events: {
load: function(){
var $body = $(this.composer.element);
var $iframe = $(this.composer.iframe);
iframeh = Math.max($body[0].scrollHeight, $body.height()) + 100;
document.getElementsByClassName('wysihtml5-sandbox')[0].setAttribute('style','height: ' + iframeh +'px !important');
},change: function(){
var $abody = $(this.composer.element);
var $aiframe = $(this.composer.iframe);
aiframeh = Math.max($abody[0].scrollHeight, $abody.height()) + 100;
document.getElementsByClassName('wysihtml5-sandbox')[0].setAttribute('style','height: ' + aiframeh +'px !important');
}
}
});