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I would like to share with you how to use the arrow function in WeChat Mini Programs's development. I believe most people don't know much about it, so share this article for your reference. I hope you will learn a lot after reading this article. Let's learn about it!

The use of arrowhead function

When we call the API request to change the page data through the data returned by the request, we often use a temporary pointer to save the this pointer.

But if you use ES6's arrow function, you can avoid

Use temporary pointers

OnLoad: function (options) {let that = this / / Save temporary pointer wx.request ({url: url + 'GetCouponlist', method:' POST', header: {'Content-Type':' application/x-www-form-urlencoded'}, data: {}, success (res) {that.setData ({/ / use temporary pointer coupon_length:res.data.data.length})})

Use the ES6 arrow function () = > {}

Success: (res) = > {this.setData ({/ / at this time this is still pointing to onLoad coupon_length:res.data.data.length functions)} these are all the contents of this article entitled "how to use Arrow functions in WeChat Mini Programs's Development". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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