32 lines
1012 B
JavaScript
32 lines
1012 B
JavaScript
if (!String.prototype.startsWith) {
|
|
Object.defineProperty(String.prototype, 'startsWith', {
|
|
enumerable: false,
|
|
configurable: false,
|
|
writable: false,
|
|
value: function (searchString, position) {
|
|
position = position || 0;
|
|
return this.indexOf(searchString, position) === position;
|
|
}
|
|
});
|
|
}
|
|
|
|
if (!String.prototype.endsWith) {
|
|
Object.defineProperty(String.prototype, 'endsWith', {
|
|
enumerable: false,
|
|
configurable: false,
|
|
writable: false,
|
|
value: function (searchString, position) {
|
|
position = position || this.length;
|
|
position = position - searchString.length;
|
|
var lastIndex = this.lastIndexOf(searchString);
|
|
return lastIndex !== -1 && lastIndex === position;
|
|
}
|
|
});
|
|
}
|
|
|
|
if(!('contains' in String.prototype))
|
|
{
|
|
String.prototype.contains = function(str, startIndex) {
|
|
return -1 !== String.prototype.indexOf.call(this, str, startIndex);
|
|
};
|
|
} |