值

此警告类别由 qmllint 拼写为[eval] 。

请勿使用 eval

发生了什么事？

您在代码中使用了eval 。

为什么这样做不好？

eval 方法很慢，而且有潜在危险。eval 将其参数当作自己的 JavaScript 脚本来执行，这会增加执行的开销。传递给eval 的参数有可能成为远程代码执行攻击的载体。

示例

import QtQuick

Item {
    function f() {
        let myString = "x",
        myObject = {
            x: 10
        },
        value = eval("myObject." + myString);
    }
}

要修复此警告，请重写代码，使其不包含任何eval 调用。

import QtQuick

Item {
    function f() {
        let myString = "x",
        myObject = {
            x: 10
        },
        value = myObject[myString];
    }
}

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