javascript，jQuery-检查数组中是否存在值

javascript, jQuery - check if value exists in array

本文关键字：是否 存在 数组 jQuery- 检查 javascript      更新时间：2023-09-26

是否有更好的方法来检查if语句中的多个项目是否与变量匹配

我有3个if语句，我需要查看一个项是否与一个名为代码的数组/变量匹配。有很多项要与代码数组/变量进行比较，所以我不得不用它们之间的|来复制每个项。有没有更有效的方法，或者我可以制作一个数组来检查代码是否等于数组中的任何项？

这就是我的

onLabelShow: function(event, label, code){
        if (code == "US-AL" | code == "US-AZ" | code == "US-CA" | code == "US-CT" | code == "US-FL" | code == "US-HI" | code == "US-ID" | code == "US-IL" | code == "US-IA" | code == "US-LA" | code == "US-ME" | code == "US-MD" | code == "US-MA" | code == "US-MO" | code == "US-NE" | code == "US-NV" | code == "US-NJ" | code == "US-NM" | code == "US-NY" | code == "US-OH" | code == "US-OK" | code == "US-OR" | code == "US-PA" | code == "US-TN" | code == "US-UT" | code == "US-VA" | code == "US-CA" | code == "US-WA" | code == "US-NC" ) {
            //do nothing
        }
        else if (code) { //if a state is not specified in var stateRedirects then prevent default
            event.preventDefault();
        }                   
    },      
    onRegionOver: function(event, code){
        if (code == "US-AL" | code == "US-AZ" | code == "US-CA" | code == "US-CT" | code == "US-FL" | code == "US-HI" | code == "US-ID" | code == "US-IL" | code == "US-IA" | code == "US-LA" | code == "US-ME" | code == "US-MD" | code == "US-MA" | code == "US-MO" | code == "US-NE" | code == "US-NV" | code == "US-NJ" | code == "US-NM" | code == "US-NY" | code == "US-OH" | code == "US-OK" | code == "US-OR" | code == "US-PA" | code == "US-TN" | code == "US-UT" | code == "US-VA" | code == "US-CA" | code == "US-WA" | code == "US-NC" ) {
            //do nothing
        }
        else if (code) { //if a state is not specified in var stateRedirects then prevent default
            event.preventDefault();
        }                   
    },
    onRegionClick: function (event, code) {
        if (code == "US-AL" | code == "US-AZ" | code == "US-CA" | code == "US-CT" | code == "US-FL" | code == "US-HI" | code == "US-ID" | code == "US-IL" | code == "US-IA" | code == "US-LA" | code == "US-ME" | code == "US-MD" | code == "US-MA" | code == "US-MO" | code == "US-NE" | code == "US-NV" | code == "US-NJ" | code == "US-NM" | code == "US-NY" | code == "US-OH" | code == "US-OK" | code == "US-OR" | code == "US-PA" | code == "US-TN" | code == "US-UT" | code == "US-VA" | code == "US-CA" | code == "US-WA" | code == "US-NC" ) {
            window.location = '/' + code;
        }
        else if (code) { //if a state is not specified in var stateRedirects then prevent default
            //event.preventDefault();
        }   
    }

任何帮助、示例或代码都将不胜感激！我试过为每个数组做，但我认为我知道的还不够，无法使它与数组一起工作。

var codes = ["US-AL", "US-AZ", ... ];

if($.inArray(code, codes) > -1){
    //do something    
}

更新：结合@Deestan的建议，这可以重写为..

function isValidCode(code){
    return ($.inArray(code, codes) > -1);
}

是

array.indexOf(searchElement[, fromIndex])

相关文章：