JQuery implementation code for inserting content at the cursor position_jquery

复制代码 代码如下:

(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);

使用方法:

复制代码 代码如下:

$(selector).insertAtCaret("value");