javascript - Once I remove an attribute I cant add it -

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i trying make select checkbox when deselect , select again doesn't select boxes anymore. while work @ first time.

this code:

html:

<div id="everything">     <input type="checkbox" id="all" />select     <br />     <br />     <div id="selectthese">         <input type="checkbox" id="first" />first         <br />         <input type="checkbox" id="second" />second         <br />     </div> </div>

js:

$(function () {     $("#everything").on("click", "#all", function () {         var carstatus = $("#all").is(':checked');         if (carstatus == true) {             $("#selectthese input").attr("checked", "checked");         } else {             $("#selectthese input").removeattr("checked");         }     }); });

jsfiddle link: http://jsfiddle.net/epsju/1/

you'll need use prop() that, , since accepts boolean check , uncheck element, can use variable directly, or ditch variable , use this.checked :

$(function () {     $("#everything").on("change", "#all", function () {         $("#selectthese input").prop("checked", this.checked);     }); });

fiddle


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