Placeholder

来源：互联网发布：ubuntu kylin 分区编辑：程序博客网时间：2024/06/05 17:19
function isPlaceholder() {    var input = document.createElement('input');    return 'placeholder' in input;  }  if (!isPlaceholder()) {  $(document).ready(function() {        if(!isPlaceholder()) {            $("input").not("input[type='password']").each(                function() {                    if($(this).val()=="" && $(this).attr("placeholder")!="") {                        $(this).val($(this).attr("placeholder"));                        $(this).focus(function() {                            if($(this).val()==$(this).attr("placeholder")) {                              $(this).val("");                          }                        });                        $(this).blur(function() {                            if($(this).val()=="") {                               $(this).val($(this).attr("placeholder"));                            }                      });                    }            });          $("input[type=password]").each(              function(index) {                  var pwdField = $(this);                    var pwdVal = pwdField.attr('placeholder');                   pwdField.after('<input id="pwdPlaceholder'+index+'" class="" type="text" value="'+pwdVal+'" autocomplete="off" />');                    var pwdPlaceholder = $('#pwdPlaceholder'+index);                    pwdPlaceholder.show();                    pwdField.hide();                    pwdPlaceholder.focus(function(){                        pwdPlaceholder.hide();                        pwdField.show();                        pwdField.focus();                    });                    pwdField.blur(function(){                        if(pwdField.val() == '') {                            pwdPlaceholder.show();                            pwdField.hide();                        }                   });               }          );         }    });   }
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