axios网络请求的请求头

axios网络请求的请求头可以通过设置axios.defaults.headers来实现。在代码中，我们可以使用以下语句设置请求头：
axios.defaults.headers.common['X-Requested-With'] = 'XMLHttpRequest'
或者可以在请求的config对象中设置headers属性，如下所示：
config.headers = { 'X-Requested-With': 'XMLHttpRequest' }
这样设置请求头可以帮助我们在网络请求中传递特定的信息，比如判断是否是XMLHttpRequest请求等。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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