如何计算Javascript中以“The”开头的句子
[英]How to count sentences next to each other that starts with the word "The" in Javascript
问题描述
I a beginner and I am trying to write a code that first splits a pasted text into sentences and then checks if three (or more) sentences next to each other starts with the word "The".
我是初学者，我正在尝试编写一个代码，首先将粘贴的文本拆分为句子，然后检查三个（或更多）句子是否以单词“The”开头。 I also would like the program to work regardless of how many sentences that pasted text consist of, now I have only 5 sentences.无论粘贴的文本包含多少个句子，我也希望程序能够正常工作，现在我只有 5 个句子。 Is there anyone that can help me?有没有人可以帮助我？
<!DOCTYPE html>
<html>
<body>
See if three (or more) sentences next to each other starts with "The".
<form id = "quiz" name = "quiz">
<input id = "text1" type = "text" name = "question1"> <!here you are supposed to paste the text you want to check>
<input id = "button" type = "button" value = "Split into sentences" onclick = "Split();">
<p id="demo1"></p>
<p id="demo2"></p>
<p id="demo3"></p>
<script>
function Split() {
question1 = document.quiz.question1.value;
let text = question1;
const myArray = text.split(/[\\.!?]/); //this splits the text into sentences
var x=0
var y=x
document.getElementById("demo1").innerHTML = myArray; //here I write the sentences
let result1 = myArray [0].startsWith("The"); //here I don't have a space before the word "The" as a text normally don't start with a space.
let result2 = myArray [1].startsWith(" The");
let result3 = myArray [2].startsWith(" The");
let result4 = myArray [3].startsWith(" The");
let result5 = myArray [4].startsWith(" The"); //now I only have five sentences but I would like the program to check the text regardless of how many sentences the pasted text includes. How do I achieve that?
{document.getElementById("demo3").innerHTML = 'You have '+(result1 + result2 + result3 + result4 + result5) + ' sentences that starts with "The".';} // Here I count the sentences that starts with "The". But I would like to only count if three (or more) sentences next to each other starts with "The" and to let the program write something like "You have three sentences (or more) next to each other that starts with 'The'" and to inform the user of the program which the first sentence of these three (or more) consecutive sentences that starts with "The" is.
}
</script>
</body>
</html>
2 个解决方案
解决方案1
0 2022-07-31 05:38:57
Try this at the end of your Split function!在您的拆分功能结束时试试这个！
let results=[];
for (var i=0;i<myArray.length;i++)
{
if (myArray[i].toLowerCase().startsWith("the") || myArray[i].toLowerCase().startsWith(" the")) results.push(myArray[i]);
}
document.getElementById("demo3").innerHTML = 'You have '+(results.length) + ' sentences that starts with "The".';
Basically we loop through the results and check each one, adding it to a new array if it matches.基本上我们遍历结果并检查每个结果，如果匹配则将其添加到新数组中。 The length of the array is how many matches there are.数组的长度是有多少匹配。 You could also avoid the startsWith(" the") if you tweak your regex to also ignore leading spaces.如果您调整正则表达式以忽略前导空格，您也可以避免使用startsWith(" the") 。
解决方案2
0 2022-07-31 05:50:09
If you notice you are using the same sequence of code across multiple lines.如果您注意到您在多行中使用相同的代码序列。 Since your new to coding a good rule of thumb is: If you see yourself typing the same thing over and over or copy and pasting;由于您是编码新手，一个好的经验法则是：如果您看到自己一遍又一遍地输入相同的内容或复制和粘贴； a loop is needed.需要一个循环。 So try this.所以试试这个。
Since we want to count how many sentence there are we can safely assume that every sentence ends in a period, so we can iterate through and count periods.
let sentenceLength = (text.match(/[.]/).length ; //regex
By the way regex can be learned here with very good explanations: Regexr Next now that we found how many sentences there we can simply throw your lines in a for loop.
let results = 0;
for(let i=0; i < sentenceLength; i++){
if(myArray [i].startsWith("The")){
result++ ;
}
Now this code will guarantee doesn't matter how many lines it will iterate through.
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