如何摆脱字符串中的选定单词
[英]how do I get rid of selected words from a string
问题描述
我如何摆脱一个字符串中的选定单词，这是我尝试过的
<html>
<body>
<p align="center"><input type="text" id="myText"
placeholder="Definition"></p>
<p align="center"><button class="button-three" onclick="BoiFunction()"><p
align="center">boii </p></button></p>
<font color="black"><p align="center" id="demo"></p></font>
</body>
</html>
function BoiFunction() {
var str = document.getElementById("myText").value;
var output = document.getElementById("demo");
var GarbageWords = str.split(",").split("by");
output.innerHTML = GarbageWords;
}
2 个解决方案
解决方案1
2 已采纳 2017-07-29 20:26:22
除了.split() ，您还可以将.replace()与正则表达式一起使用。
// ", " and " by " are to be removed from the string var str = "A string, that by has, some by bad words in, by it."; // Replace ", " globally in the string with just " " // and replace " by " globally in the string with just " " str = str.replace(/,\\s/g," ").replace(/\\sby\\s/g," "); console.log(str);
或者，对于更自动化的版本：
// Array to hold bad words var badWords = [",", "by", "#"]; var str = "A string, that by has, #some# by bad words in, by it."; // Loop through the array and remove each bad word badWords.forEach(function(word){ var reg = new RegExp(word, "g"); var replace = (word === "," || word === "by") ? " " : ""; str = str.replace(reg, replace); }); console.log(str);
解决方案2
0 2017-07-30 05:16:06
如果要摆脱不需要的单词，可以使用string#replace和regex 。 您不必每次执行replace()时都需要join() replace()因为您将获得一个新的字符串。
另外，一旦对字符串进行了split() ，就得到了一个数组，因此需要join()获取另一个字符串，然后再次对第二个单词进行split()处理。
请检查正在运行的演示。
function BoiFunction() { var str = document.getElementById('myText').value; var output = document.getElementById('demo'); var garbageWords = str.split(',').join('').split('by').join(''); output.innerHTML = garbageWords; var garbageWords2 = str.replace(/,/g,'').replace(/by/g,''); document.getElementById('demoWithReplace').innerHTML = garbageWords2; }
<p align="center"><input type="text" id="myText" placeholder="Definition"></p> <p align="center"><button class="button-three" onclick="BoiFunction()"><p align="center">boii </p></button></p> <font color="black">With Split: <p align="center" id="demo"></p></font> <font color="black">With Replace: <p align="center" id="demoWithReplace"></p></font>
如果字符串javascript的最后一个字符如何摆脱？
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