The Vue.js array matching method

Question

The Vue.js array matching method

I am attempting to populate my form with the corresponding values from 'myproduct' where the id_product matches the input. However, when I run the code, the value is not returned. Can anyone spot what's wrong with my code?

this.products.forEach(i => {
       if(this.products[i].id == item.id_product)
        {
            
            this.form.product_name = this.products[i].product_name;
            
            this.form.id_category = this.products[i].id_category;
            this.form.description = this.products[i].description;
            this.form.price = this.products[i].price;
            this.form.color = this.products[i].color;
            this.form.size = this.products[i].size;
            this.form.stock = this.products[i].stock;
            this.form.weight = this.products[i].weight;
        } 
    });

javascript arrays vue.js for-loop

Answer 1

Answer №1

In the context of Array.forEach(), remember that the first parameter in the callback function represents the current value, not the index. The second parameter is optional and refers to the index. You can either use just the current value like .forEach(item => {...}) or include the index like .forEach((item, i) => {...})

this.items.forEach(item => {
       if(item.id == product.id)
        {
            this.data.name = item.name;
            this.data.category = item.category;
            this.data.description = item.description;
            this.data.price = item.price;
            this.data.color = item.color;
            this.data.size = item.size;
            this.data.stock = item.stock;
            this.data.weight = item.weight;
        } 
    });

Answer 2

In the context of Array.forEach(), remember that the first parameter in the callback function represents the current value, not the index. The second parameter is optional and refers to the index. You can either use just the current value like .forEach(item => {...}) or include the index like .forEach((item, i) => {...})

this.items.forEach(item => {
       if(item.id == product.id)
        {
            this.data.name = item.name;
            this.data.category = item.category;
            this.data.description = item.description;
            this.data.price = item.price;
            this.data.color = item.color;
            this.data.size = item.size;
            this.data.stock = item.stock;
            this.data.weight = item.weight;
        } 
    });

The Vue.js array matching method

Answer №1

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