jquery textarealimit IE
/**
* 解决IE中textarea标签中不识别maxlength属性的解决方法
*
* 调用方式：$("#ID").textarealimit({length:20}); //length 具体的值根据需要设置
*/
(function($) {
$.fn.textarealimit = function(settings) {
settings = jQuery.extend({
length : 10
}, settings);
maxLength = settings.length;
$(this).attr("maxlength", maxLength).bind("keydown", doKeydown).bind(
"keypress", doKeypress).bind("beforepaste", doBeforePaste)
.bind("paste", doPaste);
function doKeypress() {
var oTR = document.selection.createRange()
if (oTR.text.length >= 1)
event.returnValue = true
else if (this.value.length > maxLength - 1)
event.returnValue = false
}
function doKeydown() {
var _obj = this;
setTimeout(function() {
if (_obj.value.length > maxLength - 1) {
var oTR = window.document.selection.createRange()
oTR.moveStart("character", -1
* (_obj.value.length - maxLength))
oTR.text = ""
}
}, 1)
}
function doBeforePaste() {
event.returnValue = false
}
function doPaste() {
event.returnValue = false
var oTR = document.selection.createRange()
var iInsertLength = maxLength - this.value.length + oTR.text.length
var sData = window.clipboardData.getData("Text").substr(0,
iInsertLength)
oTR.text = sData;
}
}
})(jQuery);