前言
在开发项目时，前端需要和后端对接数据，但有时后端并没有写好数据，前端还需要继续往下开发，这时候就需要mock数据了。
如何mock数据？
如下代码，在input获得焦点时调用getList()方法。
const mapDispathToProps = (dispatch) => {
return {
handleInputFocus() {
dispatch(actionCreators.getList())
}
}
}
getList()方法是通过Ajax获取数据，此时后端并没有写好，所以自己mock一个数据。
export const getList = () => {
return (dispatch) => {
axios.get('/api/headerList.json').then((res) => {
const data = res.data;
console.log(data)
}).catch(() => {
console.log('error')
})
}
}
axios.get('/api/headerList.json')这句代码，计算机会首先去src目录下寻找/api/headerList.json,没有找到然后去public目录下找，此时我们在public目录下建立/api/headerList.json文件，文件如下：
{
"success":true,
"data":["微信","支付宝","蚂蚁金服","被骗","借呗","诈骗","盗窃","pandas","TensorFlow","PyTorch","Caffe","scikit-learn","Python","Keras","pyecharts","ggplot","Matplotlib","Gensim","Bokeh","Theano","Scrapy","SciPy","Plotly","NumPy","XGBoost","是","他","有","光大永明","我","要","人","Android","女","大","不","着","男","它","二","于","中","java","把","上","这","下","的","了","来"]
}
此时返回的数据就是以上数据，通过console.log(res.data)打印数据如下图：
这样mock数据就成功了。
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