17 lines
295 B
JavaScript
17 lines
295 B
JavaScript
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let ladder = {
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step: 0,
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up() {
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this.step++;
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return this;
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},
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down() {
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this.step--;
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return this;
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},
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showStep: function() { // shows the current step
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alert( this.step );
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return this;
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}
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};
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ladder.up().up().down().showStep().down().showStep(); // shows 1 then 0
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