选中复选框ID存在 [英] check select box id exist

问题描述

我有选择框



并且想要添加一个新的选择框



但是想要检查以前是否像新的一样相同



for exp



我有选择框

I have select box

and want to add a new select box

but want to check if previous is same like new or no

for exp"

I have select box

<select id="ctl00_ContentPlaceHolder1_ageperwise[1]" name="ctl00$ContentPlaceHolder1$ageperwise[1]"></select>

and want to add 2 select box as below if different from above

<select id="ctl00_ContentPlaceHolder1_ageperwise[0]" class="chdage" name="ctl00$ContentPlaceHolder1$ageperwise[2]"></select>

<select id="ctl00_ContentPlaceHolder1_ageperwise[1]" class="chdage" name="ctl00$ContentPlaceHolder1$ageperwise[2]"></select>

来自两个以上，只需添加一个..支付0



如何查询



问候

from above two , only one should be added ..i.e. for 0

how to check

regards

推荐答案

ContentPlaceHolder1

ContentPlaceHolder1

ageperwise [1] > < / select >

ageperwise[1]"></select>

如果与上面不同，想要添加2个选择框如下所示

and want to add 2 select box as below if different from above

<select id="ctl00_ContentPlaceHolder1_ageperwise[0]" class="chdage" name="ctl00

ContentPlaceHolder1

ContentPlaceHolder1

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