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str.replace(regexp|substr, newSubstr|function)

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涓嬮潰鏄竴浜況eplace鏂规硶鐨勫父瑙佺敤娉曠ず渚嬶細

1. 鏇挎崲鎸囧畾瀛楃锛?/li>

var str = "Hello World";
var newStr = str.replace("World", "JavaScript");
console.log(newStr); // 杈撳嚭锛欻ello JavaScript

2. 鏇挎崲澶氫釜瀛楃锛?/li>

var str = "Hello World";
var newStr = str.replace(/Hello|World/g, "JavaScript");
console.log(newStr); // 杈撳嚭锛欽avaScript JavaScript

3. 鏇挎崲瀛楃妯″紡锛?/li>

var str = "Hello World";
var newStr = str.replace(/[HW]/g, "J");
console.log(newStr); // 杈撳嚭锛欽ello Jorld

4. 浣跨敤鍥炶皟鍑芥暟锛?/li>

var str = "Hello World";
var newStr = str.replace(/Hello|World/g, function(match) {
return match.toUpperCase();
});
console.log(newStr); // 杈撳嚭锛欻ELLO WORLD

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