本文实例讲述了jquery实现在光标位置插入内容的方法。分享给大家供大家参考。具体实现方法如下：
<html>
<head>
<title>无标题页</title>
<script type="text/javascript" src="jquery-1.7.2.min。js"></script>
<script type="text/javascript">
(function ($) {
$.fn.extend({
insertAtCaret: function (myValue) {
var $t = $(this)[0];
if (document.selection) {
this.focus();
sel = document.selection.createRange();
sel.text = myValue;
this.focus();
} else
if ($t.selectionStart || $t.selectionStart == '0')
{
var startPos = $t.selectionStart;
var endPos = $t.selectionEnd;
var scrollTop = $t.scrollTop;
$t.value = $t.value.substring(0, startPos) + myValue + $t.value.substring(endPos,$t.value.length);
this.focus();
$t.selectionStart = startPos + myValue.length;
$t.selectionEnd = startPos + myValue.length;
$t.scrollTop = scrollTop;
} else {
this.value += myValue;
this.focus();
}
}
})
})(jQuery);
$(document).ready(function () {
$("#numd").bind("mouseleave", function () {
document.getElementById('keybored').style.display = 'none';
document.getElementById('Nm').blur();
});
$("#Nm").focus(function () {
document.getElementById('keybored').style.display = '';
});
$(".readbtns").click(function () {
$("#Nm").insertAtCaret($(this).val());
});
});
</script>
</head>
<body>
<ul>
<li>
<input />
<div>
</div>
</li>
</ul>
<input id="hid" type="text" value="" style="display: none" />
<span id="numd" style="border: 1px solid red; clear: both; display: inline-block; font: 800em;">
<input type="text" id="Nm" name="Nm" value="" />
<div style="display: none; border: 1px solid #A2B4C6; width: 150px; height: 400px;"
id="keybored">
<input type="button" class="readbtns" value="1" />
<input type="button" class="readbtns" value="2" />
<input type="button" class="readbtns" value="3" />
<input type="button" class="readbtns" value="4" />
<input type="button" class="readbtns" value="5" />
<input type="button" class="readbtns" value="6" />
<input type="button" class="readbtns" value="7" />
<input type="button" class="readbtns" value="8" />
<input type="button" class="readbtns" value="9" />
</div>
</span>
</body>
</html>
希望本文所述对大家的jQuery程序设计有所帮助。