大约有 10,000 项符合查询结果（耗时：0.0166秒） [XML]
Case-insensitive search
...var result = string.match(/best/i);
// result == 'BEST';
if (result){
alert('Matched');
}
Using a regular expression like that is probably the tidiest and most obvious way to do that in JavaScript, but bear in mind it is a regular expression, and thus can contain regex metacharacters. If you ...
Android Calling JavaScript functions in WebView
...ntion. This call: final Object a = new Object(); callJavaScript(mBrowser, "alert", 1, true, "abc", a); will yield to SyntaxError with Unexpected token which is not surprising when you will look at the generated js call: javascript:try{alert(,,'abc',,)}catch(error){console.error(error.message);}
...
JavaScript private methods
...e function
function setFName(pfname) {
fName = pfname;
alert('setFName called');
}
//Privileged function
this.setLName = function (plName, pfname) {
lName = plName; //Has access to private variables
setFName(pfname); //Has access to private function
...
Browser detection in JavaScript? [duplicate]
...n use simply say:
if (bowser.msie && bowser.version <= 6) {
alert('Hello IE');
} else if (bowser.firefox){
alert('Hello Foxy');
} else if (bowser.chrome){
alert('Hello Chrome');
} else if (bowser.safari){
alert('Hello Safari');
} else if(bowser.iphone || bowser.android){
alert...
How to easily truncate an array with JavaScript?
...shown below.
var stooges = ["Moe", "Larry", "Shemp"];
stooges.length = 5;
alert(typeof stooges[4]); // alerts "undefined"
EDIT:
As @twhitehead mentioned below, the addition of undefined elements can be avoided by doing this:
var stooges = ["Moe", "Larry", "Shemp"];
stooges.length = Math.min(sto...
Turning live() into on() in jQuery
...y ".live()" method is depreciated since v1.7 and removed in v1.9. Fix your scripts by using the ".on()" method instead. Surprisingly this also affects the current Microsoft jquery.unobtrusive-ajax.js v2.0.20710.0 (Microsoft didn't update their scripts either so now it is broken).
...
Get image data url in JavaScript?
...image.
It would be something like this. I've never written a Greasemonkey script, so you might need to adjust the code to run in that environment.
function getBase64Image(img) {
// Create an empty canvas element
var canvas = document.createElement("canvas");
canvas.width = img.width;
...
Can you write nested functions in JavaScript?
...an treat functions like any other kind of object.
var foo = function () { alert('default function'); }
function pickAFunction(a_or_b) {
var funcs = {
a: function () {
alert('a');
},
b: function () {
alert('b');
}
};
foo = funcs[a_...
How can I convert an image into Base64 string using JavaScript?
..."encodeImageFileAsURL();" />
<div id="imgTest"></div>
<script type='text/javascript'>
function encodeImageFileAsURL() {
var filesSelected = document.getElementById("inputFileToLoad").files;
if (filesSelected.length > 0) {
var fileToLoad = filesSelected...
RGB to hex and hex to RGB
...urn "#" + componentToHex(r) + componentToHex(g) + componentToHex(b);
}
alert(rgbToHex(0, 51, 255)); // #0033ff
Converting the other way:
function hexToRgb(hex) {
var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
return result ? {
r: parseInt(result[1], 16...