可替代的独特价值

String.prototype.replaceAll = function(search_array, replacement_array) { // var target = this; // search_array.forEach(function(substr, index) { if (typeof replacement_array[index]!= "undefined") { target = target.replace(new RegExp(substr, 'g'), replacement_array[index] ) }); // return target; }; // Use: var replacedString = "This topic commented o

看看这个答案,也许它会帮助,我在我的项目中使用它。

function replaceAll(searchString, replaceString, str) {
    return str.split(searchString).join(replaceString);
}

replaceAll('abc', '',"Test abc test test abc test test test abc test test abc" ); // "Test  test test  test test test  test test "

最好的解决方案,以取代我们使用的任何字符的 indexOf(),包括(),和substring()功能,以取代相匹配的行与提供的行在当前行。

String.indexOf() 函数是找到 nth 匹配指数位置. String.includes() 方法确定一个行是否可以在另一个行中找到,随时返回真实或虚假。

下面的功能允许使用任何字符. 如 RegExp 不允许某些特殊字符如 ** 和某些字符需要逃避,如 $。

String.prototype.replaceAllMatches = function(obj) { // Obj format: { 'matchkey' : 'replaceStr' }
    var retStr = this;
    for (var x in obj) {
        //var matchArray = retStr.match(new RegExp(x, 'ig'));
        //for (var i = 0; i < matchArray.length; i++) {
        var prevIndex = retStr.indexOf(x); // matchkey = '*', replaceStr = '$*' While loop never ends.
        while (retStr.includes(x)) {
            retStr = retStr.replaceMatch(x, obj[x], 0);
            var replaceIndex = retStr.indexOf(x);
            if( replaceIndex <  prevIndex + (obj[x]).length) {
                break;
            } else {
                prevIndex = replaceIndex;
            }
        }
    }
    return retStr;
};
String.prototype.replaceMatch = function(matchkey, replaceStr, matchIndex) {
    var retStr = this, repeatedIndex = 0;
    //var matchArray = retStr.match(new RegExp(matchkey, 'ig'));
    //for (var x = 0; x < matchArray.length; x++) {
    for (var x = 0; (matchkey != null) && (retStr.indexOf(matchkey) > -1); x++) {
        if (repeatedIndex == 0 && x == 0) {
            repeatedIndex = retStr.indexOf(matchkey);
        } else { // matchIndex > 0
            repeatedIndex = retStr.indexOf(matchkey, repeatedIndex + 1);
        }
        if (x == matchIndex) {
            retStr = retStr.substring(0, repeatedIndex) + replaceStr + retStr.substring(repeatedIndex + (matchkey.length));
            matchkey = null; // To break the loop.
        }
    }
    return retStr;
};

我们还可以使用常规表达式对象,以匹配文本与模式,以下是将常规表达式对象使用的功能。

String.prototype.replaceAllRegexMatches = function(obj) { // Obj format: { 'matchkey' : 'replaceStr' }
    var retStr = this;
    for (var x in obj) {
        retStr = retStr.replace(new RegExp(x, 'ig'), obj[x]);
    }
    return retStr;
};

请注意,常规表达式是没有引用的。

var str = "yash yas $dfdas.**";
console.log('String: ', str);

// No need to escape any special character
console.log('Index matched replace: ', str.replaceMatch('as', '*', 2));
console.log('Index Matched replace: ', str.replaceMatch('y', '~', 1));
console.log('All Matched replace: ', str.replaceAllMatches({'as': '**', 'y':'Y', '$':'-'}));
console.log('All Matched replace : ', str.replaceAllMatches({'**': '~~', '$':'&$&', '&':'%', '~':'>'}));

// You need to escape some special Characters
console.log('REGEX all matched replace: ', str.replaceAllRegexMatches({'as' : '**', 'y':'Y', '\\$':'-'}));

结果:

String:  yash yas $dfdas.**
Index Matched replace:  yash yas $dfd*.**
Index Matched replace:  yash ~as $dfdas.**

All Matched replace:  Y**h Y** -dfd**.**
All Matched replace:  yash yas %$%dfdas.>>

REGEX All Matched replace:  Y**h Y** -dfd**.**

如果你想找到的东西已经在一条线上,你没有一个 regex escaper 方便,你可以使用 join/split:

函数替代Multi(haystack,针,替代) {返回 haystack.split(needle).join(替代); } someString = '猫看起来像猫'; console.log(替代Multi(someString, '猫', '狗'));

下面是基于接受答案的序列原型功能:

String.prototype.replaceAll = function(find, replace) {
    var str = this;
    return str.replace(new RegExp(find, 'g'), replace);
};

如果你的发现包含特殊的字符,那么你需要逃避它们:

String.prototype.replaceAll = function(find, replace) {
    var str = this;
    return str.replace(new RegExp(find.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&'), 'g'), replace);
};

Fiddle: http://jsfiddle.net/cdbzL/

我知道这不是最好的办法,但你可以尝试一下:

var annoyingString = "Test abc test test abc test test test abc test test abc";

while (annoyingString.includes("abc")) {
    annoyingString = annoyingString.replace("abc", "")
}