在数组对象中查找部分字符串文本

Question

Example: If I use the code below it works for the whole word "gorilla".

How do I get it to work with "gor" or "illa" or "orill"...?

...(equivalent to a str like "%gor%" in mysql for example)

 const jungle = [ { name: "frog", threat: 0 }, { name: "monkey", threat: 5 }, { name: "gorilla", threat: 8 }, { name: "lion", threat: 10 } ]; const names = jungle.map(el => el.name); // returns true document.write(names.includes("gorilla"));

Answer 1

You can use find (or filter )

 const jungle = [ { name: "frog", threat: 0 }, { name: "monkey", threat: 5 }, { name: "gorilla", threat: 8 }, { name: "lion", threat: 10 } ]; const names = (partial) => jungle.find(el => el.name.includes(partial)).name; //You can also use "filter" method ==> //const names = (partial) => jungle.filter(el => el.name.includes(partial)).map(el => el.name) console.log(names("gor")) console.log(names("illa")) console.log(names("orill"))

Answer 2

 const jungle = [ { name: "frog", threat: 0 }, { name: "monkey", threat: 5 }, { name: "gorilla", threat: 8 }, { name: "lion", threat: 10 } ]; console.log(jungle.some(({name}) => "gorilla".includes(name))); // returns true

Answer 3

You need to find the object where the name includes the (partial) string, and return the name ; otherwise return a default error string.

 const jungle = [ { name: "frog", threat: 0 }, { name: "monkey", threat: 5 }, { name: "gorilla", threat: 8 }, { name: "lion", threat: 10 } ]; function finder(jungle, str) { return jungle.find(obj => { return obj.name.includes(str); })?.name || 'No animal found'; } console.log(finder(jungle, 'gor')); console.log(finder(jungle, 'pas')); console.log(finder(jungle, 'illa')); console.log(finder(jungle, 'og')); console.log(finder(jungle, 'nk'));

Additional documentation

• Optional chaining

Answer 4

Use Array.filter to find all matches (or Array.find if you just want the first match).

Use String.match so that the search string can be either a string or a RegEx , the latter giving you the ability to use wildcards, exact match or more complex criteria.

 const jungle = [ { name: "frog", threat: 0 }, { name: "monkey", threat: 5 }, { name: "gorilla", threat: 8 }, { name: "lion", threat: 10 } ]; // find the animal whose name matches the regular expression function findAnimal(name) { return jungle.filter(animal => animal.name.match(name)); } console.log(findAnimal('gorilla')); console.log(findAnimal('on')); console.log(findAnimal(/^gor/)); console.log(findAnimal(/illa$/));