Javascript 单击后，是否向textarea添加快捷码/bbcode？

我花了大约2个小时搜索javascript，这将为我提供为textarea添加新的“onclick，insert text”按钮的简单选项，但不幸的是，我找不到我要查找的内容

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('user-submitted-content');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value += '' + tag + '';
}
</script>

<div class="buttons">
    <input type="button" value="youtube" onclick="formatText ('[video]YouTubeURL[/video]\n[description]Write your description[/description]');" />  
</div>

我有一个文本区：

<textarea name="user-submitted-content" rows="5" data-required="true" placeholder="<?php _e('Post Content', 'usp'); ?>" class="usp-textarea"></textarea>

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('mytextarea');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value += '[' + tag + ']' + '[/' + tag + ']';
}
</script> 

<form name="my_form"> 
    <textarea id="mytextarea"></textarea><br /> 
    <input type="button" value="youtube" onclick="formatText ('youtube');" /> 
    <input type="button" value="dailymotion" onclick="formatText ('dailymotion');" /> 
    <input type="button" value="vimeo" onclick="formatText ('vimeo');" /> 
</form>

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('mytextarea');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value = '[' + tag + ']' + '[/' + tag + ']';
}
</script> 

<form name="my_form"> 
    <textarea id="mytextarea"></textarea><br /> 
    <input type="button" value="youtube" onclick="formatText ('youtube');" /> 
    <input type="button" value="dailymotion" onclick="formatText ('dailymotion');" /> 
    <input type="button" value="vimeo" onclick="formatText ('vimeo');" /> 
</form>

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('user-submitted-content');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value += '' + tag + '';
}
</script>

<div class="buttons">
    <input type="button" value="youtube" onclick="formatText ('[video]YouTubeURL[/video]\n[description]Write your description[/description]');" />  
</div>

然后我可以添加如下按钮：

<input type="button" value="youtube" onclick="formatText ('youtube');" /> 
<input type="button" value="text" onclick="formatText ('text');" />  

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('user-submitted-content');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value += '' + tag + '';
}
</script>

<div class="buttons">
    <input type="button" value="youtube" onclick="formatText ('[video]YouTubeURL[/video]\n[description]Write your description[/description]');" />  
</div>

有了一些改变，我想它也可以用于我想要的东西。

---

我真的需要这个。

如果我没有错，你在哪里找这个

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('user-submitted-content');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value += '' + tag + '';
}
</script>

<div class="buttons">
    <input type="button" value="youtube" onclick="formatText ('[video]YouTubeURL[/video]\n[description]Write your description[/description]');" />  
</div>

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('user-submitted-content');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value += '' + tag + '';
}
</script>

<div class="buttons">
    <input type="button" value="youtube" onclick="formatText ('[video]YouTubeURL[/video]\n[description]Write your description[/description]');" />  
</div>

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('user-submitted-content');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value += '' + tag + '';
}
</script>

<div class="buttons">
    <input type="button" value="youtube" onclick="formatText ('[video]YouTubeURL[/video]\n[description]Write your description[/description]');" />  
</div>

JS:示例1-

$("#btnYoutube").on('click', function () {
    var setText = "[youtube][/youtube]";
    $("#txtarea").val(setText);
});

$("#btnTxt").on('click', function () {
    var setText = "[text][/text]";
    $("#txtarea").val(setText);
});

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('user-submitted-content');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value += '' + tag + '';
}
</script>

<div class="buttons">
    <input type="button" value="youtube" onclick="formatText ('[video]YouTubeURL[/video]\n[description]Write your description[/description]');" />  
</div>

样本2-

 $("input:button").on('click',function(){
    var getTxt=$(this).val();
    var setText='['+getTxt+'] ['+getTxt+']';
    $("#txtarea").val(setText)
});

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('user-submitted-content');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value += '' + tag + '';
}
</script>

<div class="buttons">
    <input type="button" value="youtube" onclick="formatText ('[video]YouTubeURL[/video]\n[description]Write your description[/description]');" />  
</div>

Html:

<input id="btnYoutube" type="button" value="youtube" />
<input id="btnTxt" type="button" value="text" />
<br/>
<textarea id="txtarea" name="user-submitted-content" rows="5" data-required="true" class="usp-textarea"></textarea>

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('user-submitted-content');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value += '' + tag + '';
}
</script>

<div class="buttons">
    <input type="button" value="youtube" onclick="formatText ('[video]YouTubeURL[/video]\n[description]Write your description[/description]');" />  
</div>

在文本区域中追加文本：

<textarea name="user-submitted-content" rows="5" data-required="true" placeholder="<?php _e('Post Content', 'usp'); ?>" class="usp-textarea"></textarea>

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('mytextarea');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value += '[' + tag + ']' + '[/' + tag + ']';
}
</script> 

<form name="my_form"> 
    <textarea id="mytextarea"></textarea><br /> 
    <input type="button" value="youtube" onclick="formatText ('youtube');" /> 
    <input type="button" value="dailymotion" onclick="formatText ('dailymotion');" /> 
    <input type="button" value="vimeo" onclick="formatText ('vimeo');" /> 
</form>

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('mytextarea');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value = '[' + tag + ']' + '[/' + tag + ']';
}
</script> 

<form name="my_form"> 
    <textarea id="mytextarea"></textarea><br /> 
    <input type="button" value="youtube" onclick="formatText ('youtube');" /> 
    <input type="button" value="dailymotion" onclick="formatText ('dailymotion');" /> 
    <input type="button" value="vimeo" onclick="formatText ('vimeo');" /> 
</form>

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('user-submitted-content');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value += '' + tag + '';
}
</script>

<div class="buttons">
    <input type="button" value="youtube" onclick="formatText ('[video]YouTubeURL[/video]\n[description]Write your description[/description]');" />  
</div>

函数格式文本（标记）{
var Field=document.getElementById（'mytextarea'）；
var val=Field.value；
var selected_txt=val.substring（Field.selectionStart，Field.selectionEnd）；
var before_txt=val.substring（0，Field.selectionStart）；
_txt后的var=val.substring（Field.selectionEnd，val.length）；
Field.value+='['+tag+']'+'[/'+tag+']'；
}

替换文本区域中的文本：

<textarea name="user-submitted-content" rows="5" data-required="true" placeholder="<?php _e('Post Content', 'usp'); ?>" class="usp-textarea"></textarea>

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('mytextarea');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value += '[' + tag + ']' + '[/' + tag + ']';
}
</script> 

<form name="my_form"> 
    <textarea id="mytextarea"></textarea><br /> 
    <input type="button" value="youtube" onclick="formatText ('youtube');" /> 
    <input type="button" value="dailymotion" onclick="formatText ('dailymotion');" /> 
    <input type="button" value="vimeo" onclick="formatText ('vimeo');" /> 
</form>

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('mytextarea');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value = '[' + tag + ']' + '[/' + tag + ']';
}
</script> 

<form name="my_form"> 
    <textarea id="mytextarea"></textarea><br /> 
    <input type="button" value="youtube" onclick="formatText ('youtube');" /> 
    <input type="button" value="dailymotion" onclick="formatText ('dailymotion');" /> 
    <input type="button" value="vimeo" onclick="formatText ('vimeo');" /> 
</form>

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('user-submitted-content');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value += '' + tag + '';
}
</script>

<div class="buttons">
    <input type="button" value="youtube" onclick="formatText ('[video]YouTubeURL[/video]\n[description]Write your description[/description]');" />  
</div>

函数格式文本（标记）{
var Field=document.getElementById（'mytextarea'）；
var val=Field.value；
var selected_txt=val.substring（Field.selectionStart，Field.selectionEnd）；
var before_txt=val.substring（0，Field.selectionStart）；
_txt后的var=val.substring（Field.selectionEnd，val.length）；
Field.value='['+tag+']+'[/'+tag+']'；
}

示例

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('user-submitted-content');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value += '' + tag + '';
}
</script>

<div class="buttons">
    <input type="button" value="youtube" onclick="formatText ('[video]YouTubeURL[/video]\n[description]Write your description[/description]');" />  
</div>

附加：

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('user-submitted-content');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value += '' + tag + '';
}
</script>

<div class="buttons">
    <input type="button" value="youtube" onclick="formatText ('[video]YouTubeURL[/video]\n[description]Write your description[/description]');" />  
</div>

替换：

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('user-submitted-content');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value += '' + tag + '';
}
</script>

<div class="buttons">
    <input type="button" value="youtube" onclick="formatText ('[video]YouTubeURL[/video]\n[description]Write your description[/description]');" />  
</div>

此外：

<script type="text/javascript"> 
function formatText(tag) {
   var Field = document.getElementById('user-submitted-content');
   var val = Field.value;
   var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
   var before_txt = val.substring(0, Field.selectionStart);
   var after_txt = val.substring(Field.selectionEnd, val.length);
   Field.value += '' + tag + '';
}
</script>

<div class="buttons">
    <input type="button" value="youtube" onclick="formatText ('[video]YouTubeURL[/video]\n[description]Write your description[/description]');" />  
</div>

函数格式文本（标记）{
var字段=document.getElementById（'user-submitted-content'）；
var val=Field.value；
var selected_txt=val.substring（Field.selectionStart，Field.selectionEnd）；
var before_txt=val.substring（0，Field.selectionStart）；
_txt后的var=val.substring（Field.selectionEnd，val.length）；
Field.value+=''+标记+''；
}

正确。只是，您的示例需要为每个按钮提供函数。我发现我的回答更容易。谢谢。@Mezelderz:很好，你解决了它，但也检查了我的第二个演示，希望你发现它非常有用，因为所有按钮都有一个功能