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Watch JavaScript Expression Values In Real-Time With Live Expressions

If you find yourself typing the same JavaScript expression in the Console repeatedly, you might find it easier to create a Live Expression. With Live Expressions you type an expression once and then pin it to the top of your Console. The value of the expression updates in near real-time.

Create a Live Expression

  1. Open the Console.
  2. Click Create Live Expression Create Live Expression. The Live Expression text box appears.

    Typing document.activeElement into the Live Expression text box.
    Figure 1 Typing document.activeElement into the Live Expression text box.

  3. Type Control+Enter or Command+Enter (Mac) to save the expression, or click outside of the Live Expression text box.

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