if an array is known
items: [
{name: "zhangsan",
score: 0
},
{name: "lisi",
score: 0
}
], in a form, the select tag binds the input box corresponding to items.name, and the variable value changingScore
when name is selected as "zhangsan" in the select drop-down menu, how can
add changingScore to items [0] .score after submission?
it"s best not to use for loops, because there may be a lot of data in the array
then you can save the currently selected index value in a hidden input [id= "selectIndex"]. When select is selected, the selected index is stored in the hidden input, and then when submitted, set it directly through index,
.//
document.querySelector("-sharpselectIndex").value = index;let index = parseInt(document.querySelector("-sharpselectIndex"));
items[index].score = changingScore;or store the selected value in localStorage or sessionStorage. The idea is to store, update and maintain an index value.
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