ECMAScript 6 introduced String.prototype.includes : const string = "foo"; const substring = "oo"; console.log(string.includes(substring)); // true. ... <看更多>

The JavaScript String replace() method returns a new string with a substring ( substr ) replaced by a new one ( newSubstr ). Note that the replace() method ... ... <看更多>

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... an array/string contains something. Nothing fancy, but without a library you'll need this as array.indexOf doesn't work in IE8 and lower. - contains.js. ... <看更多>