CODEWITHSUNDEEP
javascriptjquery
user170934
user170934

Reputation:

jQuery core.js "+i" statement, mistake or trick?

In jQuery core.js, currently, line 260

this.slice( i, +i + 1 );

is the "+i" statement a mistake or some fancy trickery I can't find any mention of?

Upvotes: 5

Views: 220

Answers (1)

lonesomeday
lonesomeday

Reputation: 237975

It's a quick way to convert i to a number. This matters because + means something different if it is a string to if it is a number. For instance:

var i = "1";
console.log(i + 1); // "11"
console.log(+i + 1); // 2

It's basically a shortcut for parseInt(i, 10).

Upvotes: 14

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