使用部分匹配或子字符串获取索引号

Question

是否可以在 javascript 的 indexOf 方法中使用部分/子字符串匹配？

我有一个字符串数组列表，我想在 indexOf 方法中使用完整字符串的部分文本来获取数组列表中所需字符串的索引号。

var text[]=
0----This text over here $%*&*&*&(()(&$..: matches
1----%#@!$%*&*&*&(()(&$..: text to be matched
2----Where does this %#@!$%*&*&*&(()(&$..: belongs to any type of category
3----There are many %#@!$%*&*&*&(()(&$..: comparators

var index=text.indexOf("Where does this %#@!$%*&*&*&(()(&$..: belongs to any type of category"), 而不是上面的行，我想使用类似的东西：

var index=text.indexOf("belongs to any type of category") 

我需要根据文本匹配获得索引号 2，即“这个 %#@!$%&&*&(()(&$..: 属于任何类别类型" 但是字符串中的特殊字符的 bcz 使它变得凝灰 & 因为它的数组具有我动态获取的其他字符串，这增加了复杂性。

所以我正在尝试使用 .indexOf 方法，我们可以在其中传递一个字符串并返回索引号，所以我的问题是有一种方法可以传递字符串的一部分而不是整个字符串并获取索引号 2 成功了吗？

代码尝试：

describe('angularjs homepage todo list', function() {
    var index = 'not found';
    var text1 = "";

    it('test', function() {
        var textToFind = "belongs to any type of category";
        for (var i=0;i<10;i++){
        var results_list=element.all(By.xpath("//*[@id='panel']/div/div[2]/span[1]")).get(i).getText().then(function(text) {  
            text1=text1+"\n"+text;
            console.log("promise returned text inside function is "+text1);
            return text1;   
        })
    }
        console.log('Text via global defined variable text1 is ' + text1);
        getIndex(0, text1.length, text1, textToFind);
        console.log('index is ' + index);
    });

    function getIndex(i, max, array, textToFind) {
        if (i < max) {
            console.log('text[' + i + '].indexOf = ' + array[i].indexOf(textToFind))
            if (array[i].indexOf(textToFind) > 0) {
                index = i;
                //The index number will be assigned to the variable index  
                //if indexOf is greater than 0, e.g. 38 was returned on index 2
           } else {
                getIndex(i + 1, max, array, textToFind);
           }
       }
    }
});


 Started
 Started execution of test


 Text via global defined variable text1 is 
 index is not found
 Test Case passed

 promise returned text inside function is ['This text over here $%*&*&*&(()(&$..: matches', 
    '%#@!$%*&*&*&(()(&$..: text to be matched',
    'Where does this %#@!$%*&*&*&(()(&$..: belongs to any type of category',
'There are many %#@!$%*&*&*&(()(&$..: comparators']

 1 spec, 0 failures
 Finished in 58.462 seconds


 [18:35:47] I/launcher - 0 instance(s) of WebDriver still running
 [18:35:47] I/launcher - internet explorerANY #01 passed

Answer 1

我需要完全更新答案：

describe('testing', function() {
    var index = 'not found';
    var text1 = [];

    it('should push element to array', function() {
        browser.ignoreSynchronization = true;
        browser.get('https://www.w3schools.com/angular/');
        var elm = element(by.id('leftmenuinner')).all(By.css('[target="_top"]'));
        elm.count().then(function(count) {
            pushToArray(0, count, elm);
        })

    });

    it('should identify index', function() {
        var textToFind = "Data Binding";
        getIndex(0, text1.length, text1, textToFind);
        console.log('Text via global defined variable text1 is ' + text1);
        console.log('index is ' + index);
    });

    function getIndex(i, max, array, textToFind) {
        if (i < max) {
                console.log('text[' + i + '].indexOf = ' + array[i].indexOf(textToFind))
                    if (array[i].indexOf(textToFind) > 0) {
                        index = i;
                        //The index number will be assigned to the variable index  
                        //if indexOf is greater than 0, e.g. 38 was returned on index 2
                } else {
                        getIndex(i + 1, max, array, textToFind);
                }
        }
    }

    function pushToArray(i, max, elm) {
        if (i < max) {
            elm.get(i).getText().then(function(tmpText) {
                console.log(tmpText);
                text1.push(tmpText);
            })
            pushToArray(i + 1, max, elm);
        }
    }
});

我希望我使用的示例网站非常适合您的尝试。
如果这有效，您仍然可以更新它以使代码更短。