[英]how to get selected text inside a textarea element by javascript?
我對這些屬性不熟悉,
有人可以提供一個簡單的演示嗎?
我需要在沒有任何庫的情況下完成它。
<script type="text/javascript">
function ShowSelectionInsideTextarea()
{
var textComponent = document.getElementById('mytextarea');
var selectedText;
// IE version
if (document.selection != undefined)
{
textComponent.focus();
var sel = document.selection.createRange();
selectedText = sel.text;
}
// Mozilla version
else if (textComponent.selectionStart != undefined)
{
var startPos = textComponent.selectionStart;
var endPos = textComponent.selectionEnd;
selectedText = textComponent.value.substring(startPos, endPos)
}
alert("You selected: " + selectedText);
}
</script>
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