This article describes the method of obtaining selected text in the text box by JavaScript. Share it for your reference. The specific analysis is as follows:
The code here can be used to obtain the selected version selected by the user in the text input box or textarea through the mouse.
I need to pay attention to the issue.
The code is as follows:
Copy the code as follows:<script type="text/javascript">
function getFieldSelection(select_field)
{
word='';
if (document.selection) {
var sel = document.selection.createRange();
if (sel.text.length > 0) {
word = sel.text;
}
}
else if (select_field.selectionStart || select_field.selectionStart == '0') {
var startP = select_field.selectionStart;
var endP = select_field.selectionEnd;
if (startP != endP) {
word = select_field.value.substring(startP, endP);
}
}
return word;
}
</script>
<textarea id="a" rows="3" cols="20">Select me, and then click the button below</textarea><br />
<button onclick="alert(getFieldSelection(document.getElementById('a')))">button_click</button>
<br />
<strong>
Note: When using non-button element onclick in IE, the result will not be obtained. Because in IE, when a non-button element is clicked, the selection content in the entire page will be changed. But in firefox and opera, this problem does not exist. So the above (Span_onclick) will not be available under IE.
I hope this article will be helpful to everyone's JavaScript programming.