Solve the problem of error when initializing the src attribute value of dynamically bound images in vue2.0

Below I will share with you an article that solves the problem of error when initializing the src attribute value of vue2.0 dynamic binding image. It has a good reference value and I hope it will be helpful to everyone.

In vue2.0, syntax similar to v-bind:src = " imgUrl " (abbreviation: src = " imgUrl ") is often used. Let's look at a case.

In the above case, since the data field captcha_id needs to be obtained through a network request, and the page has probably been rendered, a 404 error will occur every time it is loaded.

The picture The src attribute value is parsed as 'http://www.demo.com/static/.png' when initialized.

The solution is as follows:

computed: { imgUrl(){ if(this.captcha_id){ return this.$store.state.cmnUrl +'/v1/cmn/captcha/new/' + this.captcha_id + '.png' }else{ return null; } }, },

The above is what I compiled for everyone, I hope It will be helpful to everyone in the future.

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