将数组值与checkbox id匹配并使checked = false [英] Matching array values with checkbox id and making checked=false

问题描述

我有9个复选框，其ID为1-9。我有一个数组，其中包含var arr = [1,3,4,5,6,7]等数字。现在应该取消选中那些在数组中不存在的复选框（在arr数组编号2,8,9中不存在）。所以对于数字2,8,9应该取消选中chechboxes并且应该检查数组中的数字。

i have 9 checkboxes whose id will be from 1-9. I have an array which consists of numbers like var arr = [1,3,4,5,6,7]. now the checkboxes should be unchecked for those which are not present in the array (in arr array numbers 2,8,9 are not present). so for numbers 2,8,9 the chechboxes should be unchecked and for the numbers in the array should be checked.

chechbox 1: checked

chechbox 3: checked

chechbox 4: checked

chechbox 5: checked

chechbox 6: checked

chechbox 7: checked

我尝试了什么：

What I have tried:

for(var x=0;x<9;x++)
{
if(x==arr[x]
{
document.getElementById(x).checked=true;
}
}

推荐答案

尝试

try

var arr = [1, 3, 4, 5, 6, 7];
        for (var x = 1; x <= 9; x++) { 
            document.getElementById(x).checked = arr.indexOf(x) > -1;
        }

参考 JavaScript数组indexOf（）方法 [ ^ ]



演示： - JSFiddle [ ^ ]

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