mirror of
https://github.com/Jermolene/TiddlyWiki5
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104 lines
2.1 KiB
JavaScript
Executable File
104 lines
2.1 KiB
JavaScript
Executable File
//--
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//-- Augmented methods for the JavaScript Array() object
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//--
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// Add indexOf function if browser does not support it
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if(!Array.indexOf) {
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Array.prototype.indexOf = function(item,from)
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{
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if(!from)
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from = 0;
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var i;
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for(i=from; i<this.length; i++) {
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if(this[i] === item)
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return i;
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}
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return -1;
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};}
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// Find an entry in a given field of the members of an array
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Array.prototype.findByField = function(field,value)
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{
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var t;
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for(t=0; t<this.length; t++) {
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if(this[t][field] === value)
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return t;
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}
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return null;
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};
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// Return whether an entry exists in an array
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Array.prototype.contains = function(item)
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{
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return this.indexOf(item) != -1;
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};
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// Adds, removes or toggles a particular value within an array
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// value - value to add
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// mode - +1 to add value, -1 to remove value, 0 to toggle it
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Array.prototype.setItem = function(value,mode)
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{
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var p = this.indexOf(value);
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if(mode == 0)
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mode = (p == -1) ? +1 : -1;
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if(mode == +1) {
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if(p == -1)
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this.push(value);
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} else if(mode == -1) {
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if(p != -1)
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this.splice(p,1);
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}
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};
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// Return whether one of a list of values exists in an array
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Array.prototype.containsAny = function(items)
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{
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var i;
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for(i=0; i<items.length; i++) {
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if(this.indexOf(items[i]) != -1)
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return true;
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}
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return false;
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};
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// Return whether all of a list of values exists in an array
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Array.prototype.containsAll = function(items)
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{
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var i;
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for(i = 0; i<items.length; i++) {
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if(this.indexOf(items[i]) == -1)
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return false;
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}
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return true;
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};
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// Push a new value into an array only if it is not already present in the array. If the optional unique parameter is false, it reverts to a normal push
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Array.prototype.pushUnique = function(item,unique)
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{
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if(unique === false) {
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this.push(item);
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} else {
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if(this.indexOf(item) == -1)
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this.push(item);
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}
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};
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Array.prototype.remove = function(item)
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{
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var p = this.indexOf(item);
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if(p != -1)
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this.splice(p,1);
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};
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if(!Array.prototype.map) {
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Array.prototype.map = function(fn,thisObj)
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{
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var scope = thisObj || window;
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var i,j,a = [];
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for(i=0, j=this.length; i < j; ++i) {
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a.push(fn.call(scope,this[i],i,this));
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}
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return a;
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};}
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