javascript - 使用 javascript 中的 splice 删除嵌套数组中的项目

Question

我在使用 splice 从数组中删除项目时遇到问题。首先，我有一个名为player的数组，其中包含另外三个名为tier1、tier2和tier3的数组。所有这三个数组都存储了我想要操作的值。我的页面上有一个输入和一个按钮，单击该按钮会激活与拼接数组相关的 JS 函数。我已经使用 FOR 循环设置了一个 IF 语句，以便查看 tier1 以检查输入文本是否与数组中的值匹配，如果在 tier1 中找不到文本，则应该对 tier2 执行相同的操作，然后是第 3 层，最后如果输入文本不在任何数组内，则显示错误消息。如果输入文本位于 tier1 中，该函数可以正常工作，但由于某种原因，它似乎没有运行 else if 语句，我在下面提供了我的代码，我不确定这是否只是一个语法错误，或者我是否遗漏了一些某种功能。非常感谢提前

var player=[]
var tier1=["p1","p2","p3"]
var tier2=["p4","p5","p6","p7"]
var tier3=["p8","p9","p10","p11"]

function removeFunction() {
    if (document.getElementById("removePlayer").value !== "") {
        for (index = 0; index < tier1.length; index++) {
            if(document.getElementById("removePlayer").value == tier1[index]) {
        tier1.splice(index, 1);
            playerFunction();
            playerAlert = "Player Removed";
            document.getElementById("test1").innerHTML = playerAlert;
            document.getElementById("test2").innerHTML = tier1;
    }}
    } else if (tier1[index] !== document.getElementById("removePlayer").value) {
        for (index = 0; index < tier2.length; index++) {
        if(tier2[index] == document.getElementById("removePlayer").value) {
            tier2.splice(index, 1);
            playerFunction();
            playerAlert = "Player Removed";
            document.getElementById("test1").innerHTML = playerAlert;
            document.getElementById("test2").innerHTML = tier2;
        }}
    } else if (tier2[index] !== document.getElementById("removePlayer").value) {
        for (index = 0; index < tier3.length; index++) {
        if(tier3[index] == document.getElementById("removePlayer").value) {
            tier3.splice(index, 1);
            playerFunction();
            playerAlert = "Player Removed";
            document.getElementById("test1").innerHTML = playerAlert;
            document.getElementById("test2").innerHTML = tier3;
        }
    }} else {
        playerAlert = "Nothing happened";
        document.getElementById("test1").innerHTML = playerAlert;
    }
}

http://jsfiddle.net/9r73ntsc/1/

Answer 1

这会对你有帮助

function removeFunction() {
    if (document.getElementById("removePlayer").value !== "") {
        for (index = 0; index < tier1.length; index++) {
            if (document.getElementById("removePlayer").value == tier1[index]) {
                tier1.splice(index, 1);
                playerFunction();
                playerAlert = "Player Removed";
                document.getElementById("test1").innerHTML = playerAlert;
                document.getElementById("test2").innerHTML = tier1;
                return;
            }
            if (document.getElementById("removePlayer").value == tier2[index]) {
                tier2.splice(index, 1);
                playerFunction();
                playerAlert = "Player Removed";
                document.getElementById("test1").innerHTML = playerAlert;
                document.getElementById("test2").innerHTML = tier2;
                return;
            }
            if (document.getElementById("removePlayer").value == tier3[index]) {
                tier3.splice(index, 1);
                playerFunction();
                playerAlert = "Player Removed";
                document.getElementById("test1").innerHTML = playerAlert;
                document.getElementById("test2").innerHTML = tier3;
                return;
            }
        }
    }
    playerAlert = "Nothing happened";
    document.getElementById("test1").innerHTML = playerAlert;
}

编辑:将最终 IF 语句从 tier2[index] 更正为 tier3[index]