Jquery在光标位置插入内容

(

function

($){

02

$.fn.extend({

03

insertAtCaret:

function

(myValue){

04

var

$t=$(

this

)[0];

05

if

(document.selection) {

06

this

.focus();

07

sel = document.selection.createRange();

08

sel.text = myValue;

09

this

.focus();

10

}

11

else

12

if

($t.selectionStart || $t.selectionStart ==

'0'

) {

13

var

startPos = $t.selectionStart;

14

var

endPos = $t.selectionEnd;

15

var

scrollTop = $t.scrollTop;

16

$t.value = $t.value.substring(0, startPos) + myValue + $t.value.substring(endPos, $t.value.length);

17

this

.focus();

18

$t.selectionStart = startPos + myValue.length;

19

$t.selectionEnd = startPos + myValue.length;

20

$t.scrollTop = scrollTop;

21

}

22

else

{

23

this

.value += myValue;

24

this

.focus();

25

}

26

}

27

})

28

})(jQuery);

1

$(selector).insertAtCaret(

"value"

);