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Finding text from a paragraph - Javascript?

I wrote the below code to find my name from a paragraph,

 /*jshint multistr:true */

text = "Blah blah blah blah blah blah Elic \
blah blah blah Eric blah blah Eric blah blah \
blah blah blah blah blah Eric";

var myName = "Eric";
var hits = [];
var l=0;
var count=0;


// Look for "E" in the text
for(var i = 0; i < text.length; i++) {
    if (text[i] === "E") {

        for(var j = i; j < (myName.length + i); j++) {
           for(var k =1; k < 4; k++) {
            if(text[i+k] === myName[k]){

            hits.push(text[j]); 
            }
                else {
                    break;
                }

                }           
            }

        }
    }



if (hits.length === 0) {
    console.log("Your name wasn't found!");
} else {
    console.log(hits);
}

But the way out goes like  [ 'E', 'E', 'E', 'r', 'r', 'r', 'i', 'i', 'i', 'c', 'c', 'c', 'E', 'E', 'E', 'r', 'r', 'r', 'i', 'i', 'i', 'c', 'c', 'c', 'E', 'E', 'E', 'r', 'r', 'r', 'i', 'i', 'i', 'c', 'c', 'c' ]

I'm pretty sure this is because of the 3rd cycle loop. Please give some suggestion for fine tuning this code so that the result is like this

[ 'E', 'r', 'i', 'c', 'E', 'r', 'i', 'c', 'E', 'r', 'i', 'c', 'E', 'r', 'i', 'c' ]

Thanks in advance.

+3


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6 answers


1

var res = text.match(new RegExp(myName, 'g')).join('').split('');

2



var text = "Blah blah blah blah blah blah Elic \
blah blah blah Eric blah blah Eric blah blah \
blah blah blah blah blah Eric";

var myName = "Eric";
var hits   = [];
var l      = 0;
var count  = 0;
var foundName = '';  

for (var i = 0; i < text.length; i++) {
  foundName = '';

  if (text[i] === "E") {
    for (var j = 0; j < myName.length; j++) {
      foundName += text[i + j];                
    }

    if (foundName === myName) {
      for (var k = 0; k < myName.length; k++) {
        hits.push(foundName[k]);                
      }
    }
  }
}

console.log(hits);
Run codeHide result


+4


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You don't need both inner loops for

. What happens when you are break

, you get out of the innermost loop, but still start the second loop.

Try this instead of two inner loops: (replace the for loop that includes j

)



for (var k = 0; k < 4; k++) {
    if (text[i + k] === myName[k]) {
        hits.push(text[i + k]); 
    } else {
        break;
    }
}
+2


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you can try using javascript function . indexOf () .

text = "Blah blah blah blah blah blah Elic \
blah blah blah Eric blah blah Eric blah blah \
blah blah blah blah blah Eric";

if(text.indexOf('Eric') < 0 ){
    console.log("Your name wasn't found!");
}
0


source


Not sure what you want to do with the result, but assuming you just want to check if the name is in the string, you use a method .indexOf()

to:

var n = text.indexOf("Eric");

Then the result will n

display the first character index position, and if it cannot find a matching word, it will return -1

.

So you add this to a simple test like:

if(text.indexOf("Eric") <0){
     \\doStuff
}
0


source 


// Look for "E" in the text
for(var i = 0; i < text.length; i++) {
    if (text[i] === myName[0]) {
        var extracted = text.substring(i, i + myName.length);
        if (myName === extracted) {
            for (var j = 0; j < extracted.length; j++) {
                hits.push(extracted[j]);
            }
        }
    }
}

Scrolls down until it finds the first char of your name, extract and then press.

Fiddle: http://jsfiddle.net/pm0xqrpq/

0


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Please try this.

     text = "Blah blah blah blah blah blah Elic lah blah blah Eric blah blah Eric blah blah blah blah blah blah blah Eric";

    var charFound=0;
    var myName = ['E' , 'r', 'i' ,'c'];
    var hits = [];
    var l=0;
    for(var i = 0; i < text.length; i++) 
    {
        if(text[i] === myName[charFound])
        {   
          charFound++;
        }
        else
        {
          continue;
          charFound=0;
        }
        if(charFound == 4)
        {
          for(var j = 0; j < 4;  j++)
          {
             hits.push(text[i-j]); 
            }
            charFound = 0;
        }
   }
   // Rearranging the hits counter to match the requirement
   for(var k = 0; k <hits.length/2; k++ )
   {
        var temp="";
        temp = hits[k];
        hits[k]= hits[hits.length-k-1];
        hits[hits.length-k-1] = temp;
   }
  alert(hits);
0


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