- (function($) {
- jQuery.fn.maxLength = function(max){
- this.each(function(){
- var type = this.tagName.toLowerCase();
- var inputType = this.type ? this.type.toLowerCase() : null;
- if (type == "input" && inputType == "text" || inputType == "password") {
- //应用标准的maxLength
- this.maxLength = max;
- }
- else if (type == "textarea") {
- this.onkeypress = function(e){
- var ob = e || event;
- var keyCode = ob.keyCode;
- var hasSelection = document.selection ? document.selection.createRange().text.length > 0 : this.selectionStart != this.selectionEnd;
- return !(this.value.length >= max && (keyCode > 50 || keyCode == 32 || keyCode == 0 || keyCode == 13) && !ob.ctrlKey && !ob.altKey && !hasSelection);
- };
- this.onkeyup = function(){
- if (this.value.length > max) {
- this.value = this.value.substring(0, max);
- }
- };
- }
- });
- })(jQuery);
- //使用方法调用:$('#macoArea").maxLength(500);
- //该片段来自于http://www.codesnippet.cn/detail/291120137633.html
来源: http://www.codesnippet.cn/detail/291120137633.html