包含Java中特定符號或單詞的過濾器數組

Question

您好，我想在過濾我的數組時尋求幫助，我有一個包含單詞的數組列表，但我想過濾掉帶有符號（“＃”）的單詞以在數組上刪除

function InitializeV3() {
    var req = SymbolList; //obj with symbol property
    for (var i = 0; i < req.lenght; i++) {
        if (req[i].smybol.includes("#")) {
            req.splice(req[i], 1);
        }
    }
    console.log(req);
};

Answer 1

首先req數組應包含對象（當前語法不正確）：

var req = [
 { symbol: 'test' },
 { symbol: '#test1' },
 // ...
];

然后，您可以嘗試：

const filteredReq = req.filter(item => item.symbol.indexOf('#') === -1);

Answer 2

對於簡單的數組，可以使用filter方法這樣做：

 var req = ['test','#test1','#test2','test3','test4']; var result = req.filter(item => !item.includes("#")); console.log(result); 

如果您有一系列對象：

 var req = [{symbol: 'test'},{symbol: '#test1'},{symbol: '#test2'},{symbol: 'test3'},{symbol: 'test4'}] var result = req.filter(item => !item.symbol.includes('#')); console.log(result); 

Answer 3

 function InitializeV3() { // For simple array var req = ['test', '#test1', '#test2', 'test3', 'test4' ] var filtered = req.filter(item => !item.includes('#')) console.log(filtered) }; InitializeV3(); // For array of objects var req = [{ symbol: 'test' }, { symbol: '#test1' }, { symbol: '#test2' }, { symbol: 'test3' }, { symbol: 'test4' }] // Use the following var filtered = req.filter(item => !item.symbol.includes('#')) console.log(filtered) 

Answer 4

您可以遍歷所有鍵。 但是，如果多次使用symbol作為鍵，則只會保存最后的數據。

 let SymbolList = { symbol0:'test', symbol1:'#test1', symbol2: '#test2', symbol3:'test3', symbol4: 'test4' }; function InitializeQuotesV3(req) { for (key in req) { req[key] = req[key].replace(/#/g,""); } return req; }; console.log(InitializeQuotesV3(SymbolList)); 

Answer 5

更好地使用JS Regex Regex

    var req = [{symbol:'test'} ,
           {symbol:'#test1'},
           {symbol: '#test2'}, 
           {symbol:'test3'} ,
           {symbol: 'test4'}];
          let hasHash = /#/;
        for (var i = req.length - 1; i >= 0; i--) {
            if (hasHash.test(req[i].symbol)) {
                req.splice(i,1); 
            }
        }
        console.log(req);