<div class="daic">
<p class="reward"></p>
<p class="reward"></p>
<p class="reward"></p>
<p class="reward"></p>
<p class="reward"></p>
</div>
<p class="data"></p>
var num = 1;
$('<p id="data' + num + '"></p>').appendTo('body');
獲取變量id的屬性id
console.log($('#data' + num).attr('id'));
給每個reward賦值id為rewardi
for(var i=0;i<6;i++) {
$('.daic .reward:nth-child(' + i + ')').attr('id','reward'+(i));
}
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