From unexpected behavior with arrays and objects, to the infamous "NaN" value and the "truthy/falsy" conundrum, JavaScript is full of quirks and edge cases that can make even experienced developers scratch their heads. We will marvel at the strange and sometimes hilarious things that can happen...
toFixed(2) + " TB"; }; export default FileSizeFilter; JavaScript Copy This filter function takes a file size in bytes as input and returns a human-readable string representing the size in bytes, kilobytes, megabytes, gigabytes, or terabytes, depending on the size. In this filter, we ...
letlooselyTypedVar:any=4;// It's ok as ifItExists might exist at runtimelooselyTyped.ifItExists();// toFixed exists (but the compiler doesn't check)looselyTyped.toFixed();letstrictlyTyped:unknown=4;strictlyTyped.toFixed();// Will give us an error: "Object is of type 'unknown'". The...
The normal mapping is from member names to member values: // Static (= fixed) lookup: assert.equal(NoYes.Yes, 1); // Dynamic lookup: assert.equal(NoYes['Yes'], 1); Numeric enums also support a reverse mapping from member values to member names: assert.equal(NoYes[1], 'Yes'); ...
alert( num.toFixed(2)); alert(parseFloat(50).toFixed(2););//50.00//substringfunction get(){ var s= 22.127456 + ""; var str= s.substring(0,s.indexOf(".") + 3); alert(str); }//正则onload=function(){ var a= "23.456322"; var aNew; var re=...
I have seen this caseCamera Tutorial, which is to control mouse events, but the result I want is to modify the perspective while performing normal event interactions. But in this demoMulti-part CZML, when I modify the code, the mouse events can no longer be called. I don’t know ...
>>about JavaScript? >What significant bugs does JScript have? OK, there are some well- >known bugs with elisions, toFixed, etc. but there's nothing too >major as far as I know. > Not necessarily bugs, but a few inconsistencies in how the DOM is handled and how...
The file is just about 100% JavaScript. There’s no CSS file. In between the body tags, the only tags are script tags.This may not be the most effective way of doing things or the fastest – I’ve never performance-tested this style of coding. But it is teaching me how to use Jav...
It is slightly safer: The type Globalness only accepts member names, not strings. 12.5 Enums at runtime TypeScript compiles enums to JavaScript objects. As an example, take the following enum: enum NoYes { No, Yes, } TypeScript compiles this enum to: var NoYes; (function (NoYes)...