Searching for character in JSON using JavaScript

Question

[
{"lastName":"Noyce","gender":"Male","patientID":19389,"firstName":"Scott","age":"53Y,"}, 
{"lastName":"noyce724","gender":"Male","patientID":24607,"firstName":"rita","age":"0Y,"}
]

Comparing my input with the JSON.

for (var i = 0; i < recentPatientsList.length; ++i) {
  if (searchBarInput === recentPatientsList[i].lastName) {
    alert("Found at index " + i);
  }
}

With this i am able to see whether i match my input with the JSON. How can i get results of data whose last name starts with 'N' or given input.

Did you ask the same question twice??

typeof
– typeof

2011-04-23 21:18:30 +00:00
Commented Apr 23, 2011 at 21:18 — typeof
– typeof, Commented Apr 23, 2011 at 21:18
not exactly, but its some what similar

theJava
– theJava

2011-04-23 21:23:07 +00:00
Commented Apr 23, 2011 at 21:23 — theJava
– theJava, Commented Apr 23, 2011 at 21:23

typeof · Accepted Answer · 2011-04-23 21:16:52Z

1

Assuming you searchBarInput is equal to "n", Try this:

var results = []; // initialize array of results
for (var i = 0; i < recentPatientsList.length; ++i) {
  if (recentPatientsList[i].lastName.indexOf(searchBarInput) == 0) {
    results.push(recentPatientsList[i].lastName);
  }
}
alert('Results: ' + results.toString());

answered Apr 23, 2011 at 21:16

typeof

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4 Comments

theJava Over a year ago

Wbat does indexOf(inputControl) == 0 means? Why do we check with a Zero.

typeof Over a year ago

I don't know what inputControl is but indexOf() returns the index of the matching string -- 0 if the match is at the beginning.

theJava Over a year ago

its a textInput... and if i have to match for n in any part of the word... what should i use.

typeof Over a year ago

If there is a match, then the indexOf() method will return a positive number (or zero) -- and -1 if there is no match. So you can check to see if the result is >= 0 or != -1.

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