截止2019年2月23日，天猫不支持微信支付，而京东支持微信支付。
根据天猫官方客服回复：通过支付宝在淘宝或其他网站购物消费，均无法使用微信支付。如下图所示。
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根据京东官方客服回复：提交订单后在收银台页面选择【微信支付】，然后使用手机微信【扫一扫】扫描二维码即可支付。
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扩展资料：
如果想用微信里的钱进行支付宝的付款，可以将支付宝和微信绑定同一张银行卡，通过提现的方式实现使用微信里的零钱支付。
微信支付绑定银行卡的步骤如下：
1、联网，打开手机微信APP，点击【我的】-【支付】。
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2、进入后，点击【钱包】。
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3、在“钱包”界面找到并点击【银行卡】。
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4、点击【添加银行卡】。
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5、在弹出的页面填入绑定了支付宝的银行卡的信息，以使微信和支付宝绑定同一张银行卡，点击【下一步】。
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6、填写银行卡及身份信息，点击【下一步】。
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7、按提示设置支付密码，银行卡便绑定成功。
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