js indexof string

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showing results for - "js indexof string"
Miranda
13 Nov 2018
1//indexOf - JS method to get index of array element. 
2// Returns -1 if not found
3
4var colors=["red","green","blue"];
5var pos=colors.indexOf("blue");//2
6
7//indexOf getting index of sub string, returns -1 if not found
8
9var str = "We got a poop cleanup on isle 4.";
10var strPos = str.indexOf("poop");//9
11
12//Eg with material ui
13
14<Checkbox
15   checked={value.indexOf(option) > -1}
16   value={option}
17/>
Andrea
04 Jan 2018
1//indexOf getting index of array element, returns -1 if not found
2var colors=["red","green","blue"];
3var pos=colors.indexOf("blue");//2
4
5//indexOf getting index of sub string, returns -1 if not found
6var str = "We got a poop cleanup on isle 4.";
7var strPos = str.indexOf("poop");//9
Carl
28 Oct 2020
1
2var str = "Please locate where 'locate' occurs!";
3
4var ind1 = str.indexOf("locate"); // return location of first value which founded
5var ind2 = str.lastIndexOf("locate"); // return location of last value which founded
6var ind3 = str.indexOf("locate", 15); // start search from location 15 and then take first value which founded
7var ind4 = str.search("locate");
8//The search() method cannot take a second start position argument. 
9//The indexOf() method cannot take powerful search values (regular expressions).
10
11document.write("<br>" + "Length of string:", len);
12document.write("<br>" + "indexOf:", ind1);
13document.write("<br>" + "index of last:", ind2);
14document.write("<br>" + "indexOf with start point:", ind3);
15document.write("<br>" + "search:", ind4);
Carolina
04 May 2019
1const paragraph = 'The quick brown fox';
2
3console.log(paragraph.indexOf('T'));
4>> 0
5
6console.log(paragraph.indexOf('h'));
7>> 1
8
9console.log(paragraph.indexOf('Th'));
10>> 0
11
12console.log(paragraph.indexOf('he'));
13>> 1
14
15console.log(paragraph.indexOf('x'));
16>> 18
Tommaso
24 Jan 2019
1str.indexOf(searchValue[, fromIndex])
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