Question

如果文本输入中有突出显示的文本，如何删除所选文本？

我设置了一个小提琴，以显示我有多远，但我无法弄清楚如何删除给定的文本。

<input type='text' value='stackoverflow.com' id='text1' />
<br />
<button id="btnSelect">select text</button>
<button id="btnRemove">remove selected text</button>

Answer 1

selectionStart和selectionEnd可以从input标记中获取所选文字。查看演示

＆＃13;

$("#btnSelect").click(function () {
    document.getElementById('txtbox').setSelectionRange(6, 12);
});
$("#btnRemove").click(function () {
    var ele  = document.getElementById('txtbox');
    var text = ele.value;
    
    text = text.slice(0, ele.selectionStart) + text.slice(ele.selectionEnd);
    ele.value = text;
});

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type='text' value='stackoverflow.com' id='txtbox' />
<br />
<button id="btnSelect">select text</button>
<button id="btnRemove">remove selected text</button>

＆＃13;

Answer 2

＆＃13;

function removeText()
{
	document.getElementById('text1').value  = "";
}

＆＃13;

<input type='text' value='stackoverflow.com' id='text1' />
<br />
<button id="btnSelect">select text</button>
<button id="btnRemove" onclick="removeText()">remove selected text</button>

＆＃13;

如何从输入文本中删除所选文本？

2 个答案: