As we all know, ie9 is not compatible with the placeholder attribute, so we have customized a jquery plug-in, placeholder. js. The code for placeholder. JS is as follows:
/*** This control is compatible with ie9 or lower, and is specially designed for the * Author: quranjie * Date: */$ (function () that does not support the placeholder attribute below ie9 () {// If placeholder is not supported, use jquery to complete if (! Issuppplacplaceholder () {// traverses all input objects, except for the password box $ ('input '). not ("input [type = 'Password']"). each (function () {var self = $ (this); var val = self. ATTR ("Placeholder"); input (self, Val) ;});/* Special Handling of the password box * 1. create a text box * 2. switch between getting focus and losing focus */$ ('input [type = "password"] '). each (function () {var pwdfield = $ (this); var pwdval = pwdfield. ATTR ('placeholder'); var pwdid = pwdfield. ATTR ('id'); // rename the input ID to the original ID followed by 1pwdfield. after ('<input id = "' + pwdid + '1" type = "text" value = '+ pwdval + 'autocomplete = "off"/> '); vaR pwdplaceholder =$ ('#' + pwdid + '1'); pwdplaceholder. show (); pwdfield. hide (); pwdplaceholder. focus (function () {pwdplaceholder. hide (); pwdfield. show (); pwdfield. focus () ;}); pwdfield. blur (function () {If (pwdfield. val () = '') {pwdplaceholder. show (); pwdfield. hide () ;}}) ;}}); // determines whether the browser supports the placeholder attribute function issuppplacplaceholder () {var input = document. createelement ('input'); Return 'placeholder' in input;} // jquery replaces the processing function input (OBJ, Val) {var $ input = OBJ; var val = val; $ input. ATTR ({value: Val}); $ input. focus (function () {if ($ input. val () = Val) {$ (this ). ATTR ({value :""});}}). blur (function () {if ($ input. val () = "") {$ (this ). ATTR ({value: Val });}});}
Call method:
<HTML> This code is compatible with ie9 and earlier versions. jquery selects a stable version of 1.7.2. The code implementation takes into account multiple password input boxes on a page.
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Compatible with placeholder
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