(obj.length === +obj.length) Whats the purpose of this + after === in underscore.js source code?
obj.length === +obj.length in javascript
'length' in Object(obj) How does it work in js? What does +obj.length mean in Underscore.js’s each method? jquery obj.find problem in javascript Call to method in same obj with jQuery not working When is obj.length not equal to +obj.length? whats wrong with this JS What does (obj.length === +obj.length) compare? why in JavaScript's: obj = new Boolean(false) , (obj && true) is true, and (obj || false) is false? Underscore.js _.isObject = function (obj) { return obj === Object(obj); }; whats wrong with this JS? In $.extend(true, {}, obj) in javascript, what is the purpose of 'true'? obj is null, javascript In javascript, which is better `var Obj = Obj || {}` or `if (Obj === 'undefined' || typeof Obj !== 'object')` key in obj when obj is a function? Javascript: date obj-date obj Difference between using _(obj).map(callback) and _.map(obj, callback) in underscore json obj with array Whats the error in this AJAX jQuery? Why obj.a = ( obj.a || [] ).push( 10 ) makes obj.a as type number Whats the codeURI value for ¶? obj == 'undefined' OR obj === 'undefined' OR obj == null OR ALL What does Object(obj) === obj do? json obj into javascript array whats is underscore meaning before a function js or php? Php variable obj to js JavaScript "x in obj": obj.x is undefined? How to understand "return obj === void 0" in the source of underscore? Whats the purpose of new in module.exports? The length of the obj is 1 - javascript