////使用方法//$(文本域选择器).insertContent("插入的内容");//$(文本域选择器).insertContent("插入的内容"，数值); //根据数值选中插入文本内容两边的边界, 数值: 0是表示插入文字全部选择，-1表示插入文字两边各少选中一个字符。////在光标位置插入内容, 并选中(function($) {$.fn.extend({insertContent: function(myValue, t) {var $t = $(this)[0];if (document.selection) { //iethis.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);
