javascript - 在 javascript 中作为数组成员存储的函数/命令

Question

test.php 上的 PHP 代码:

<?php
$con = mysqli_connect("localhost", "user", "password", "DB");
if (mysqli_connect_errno()){
    echo "failed to connect:" . mysqli_connect_error();
}

$grab = mysqli_query($con, "SELECT * FROM DB");
$cars = array();
while($row = mysqli_fetch_assoc($grab)){
    array_push($cars, array("id" => $row["Id"], "name" => $row["Name"], "color" => $row["Color"];
}
echo json_encode($cars);

然后在 html 页面上添加 jQuery/javascript 代码:

var iNL1 = document.getElementById("itemNameLink1").innerHTML;
var iNL2 = document.getElementById("itemnameLink2").innerHTML;
var iNL3 = document.getElementById("itemNameLink3").innerHTML;

var iNLarr = [iNL1, iNL2, iNL3];
i = 0;

$.get("test.php", function($cars){
    $.each($cars, function(){
        iNLarr[i] = this.name;
        i++;
    });
}, "json");

谁能告诉我为什么这不起作用，我在 iNLarr[i] 上得到空引用。我猜我无法像我所做的那样将命令存储在数组中。谁能告诉我一种方法来做到这一点。

Answer 1

如果要将“命令”放入数组中，则需要将函数放入:

iNRarr = [ 
    function(html) {
        document.getElementById("itemNameLink1").innerHTML = html;
    }, function(html) {
        document.getElementById("itemNameLink2").innerHTML = html;
    }, function(html) {
        document.getElementById("itemNameLink3").innerHTML = html;
    }
];

然后你像这样调用函数:

$.get("test.php", function($cars){
    $.each($cars, function(i, car){
        if (iNLarr[i]) {
            iNLarr[i](car.name);
        }
    });
}, "json");