本文實例講述了jQuery往textarea中光標所在位置插入文本的方法。分享給大家供大家參考。具體實現方法如下：
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 <html> <head> <script src="jquery-1.8.1.min.js"></script> <script > $(function() { /* 在textarea處插入文本--Start */ (function($) { $.fn.extend({ insertContent : function(myValue, t) { var $t = $(this)[0]; if (document.selection) { // ie this.focus(); var sel = document.selection.createRange(); sel.text = myValue; this.focus(); sel.moveStart('character', -l); var wee = sel.text.length; if (arguments.length == 2) { var l = $t.value.length; sel.moveEnd("character", wee + t); t <= 0 ? sel.moveStart("character", wee - 2 * t - myValue.length) : sel.moveStart( "character", wee - t - myValue.length); sel.select(); } } else if ($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; if (arguments.length == 2) { $t.setSelectionRange(startPos - t, $t.selectionEnd + t); this.focus(); } } else { this.value += myValue; this.focus(); } } }) })(jQuery); /* 在textarea處插入文本--Ending */ }); $(document).ready(function(){ $("#ch_button").click( function () { $("#test_in").insertContent("<upload/day_140627/201406271546349972.jpg>"); }); }); </script> </head> <body > <button id="ch_button" value="插入" >插入</button> <textarea name="content" id="test_in" rows="30" cols="100"> </textarea> </body> </html>希望本文所述對大家的jQuery程序設計有所幫助。