Question

如何将返回的结果存储到变量中而不进行更改？我基本上希望函数只被调用一次并存储在变量中。

现在每次按下按钮时var word都会更改其值。我希望它从read()函数中获取退役值并保持值与验证相同

这是我的代码：

function read() {
    // var result gets a random line from a file
    var lines = result.split(", ");
    var randLineNum = Math.floor(Math.random() * lines.length);
    return lines[randLineNum];
}

function Check(strParam){
        var guessWord = strParam;
        var word = read();
        if(guessWord != ""){
            if(guessWord !== word){
                console.log(word); // I am checking here for the word and it keeps changing
            }
        }
    }

$('#button').on('click', function() {
    Check($('#txtbox').val());
});

Answer 1

尝试

function read() {
    // var result gets a random line from a file
    var lines = result.split(", ");
    var randLineNum = Math.floor(Math.random() * lines.length);
    return lines[randLineNum];
}

var word = read();

function Check(strParam){
        var guessWord = strParam;        
        if(guessWord != ""){
            if(guessWord !== word){
                // I am checking here for the word and it keeps changing
                console.log(word); 
            }
        }
    }

$('#button').on('click', function() {
    Check($('#txtbox').val());
});

Answer 2

这个怎么样：

var lines = result.split(", ");
var randLineNum = Math.floor(Math.random() * lines.length);
var word = lines[randLineNum];

function Check(strParam){
    var guessWord = strParam;
    if(guessWord != ""){
        if(guessWord !== word){
            console.log(word); // I am checking here for the word and it keeps changing
        }
    }
}

$('#button').on('click', function() {
     Check($('#txtbox').val());
});

Answer 3

Evertime你单击按钮，OnClick函数调用read，它会完成它应该做的事情。从文件中选择一个随机行。您需要在检查结果之前缓存结果。

function read() {
    // var result gets a random line from a file
    var lines = result.split(", ");
    var randLineNum = Math.floor(Math.random() * lines.length);
    return lines[randLineNum];
}

var word = read();

function Check(strParam){
    var guessWord = strParam;
    //var word = read();  
    if(guessWord != ""){
        if(guessWord !== word){
            console.log(word); 
        }
    }

 }

$('#button').on('click', function() {
    Check($('#txtbox').val());
});

将返回的结果存储到变量中

3 个答案: